﻿<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.irs.gov/efile" returnVersion="2012v2.1">
  <ReturnHeader binaryAttachmentCount="0">
    <Timestamp>2014-05-14T13:46:34-05:00</Timestamp>
    <TaxPeriodEndDate>2013-06-30</TaxPeriodEndDate>
    <PreparerFirm>
      <EIN>042943536</EIN>
      <PreparerFirmBusinessName>
        <BusinessNameLine1>Tonneson &amp; Company Inc</BusinessNameLine1>
      </PreparerFirmBusinessName>
      <PreparerFirmUSAddress>
        <AddressLine1>401 Edgewater Place Suite 300</AddressLine1>
        <City>Wakefield</City>
        <State>MA</State>
        <ZIPCode>018806208</ZIPCode>
      </PreparerFirmUSAddress>
    </PreparerFirm>
    <ReturnType>990</ReturnType>
    <TaxPeriodBeginDate>2012-07-01</TaxPeriodBeginDate>
    <Filer>
      <EIN>042103623</EIN>
      <Name>
        <BusinessNameLine1>ST MARK'S SCHOOL OF SOUTHBOROUGH INC</BusinessNameLine1>
      </Name>
      <NameControl>STMA</NameControl>
      <Phone>5087866000</Phone>
      <USAddress>
        <AddressLine1>25 MARLBOROUGH ROAD</AddressLine1>
        <City>SOUTHBOROUGH</City>
        <State>MA</State>
        <ZIPCode>01772</ZIPCode>
      </USAddress>
    </Filer>
    <Officer>
      <Name>Robert D Meyer</Name>
      <Title>Director of Finance and Operations</Title>
      <Phone>5087866000</Phone>
      <DateSigned>2014-05-12</DateSigned>
      <AuthorizeThirdParty>1</AuthorizeThirdParty>
    </Officer>
    <Preparer>
      <Name>Cynthia P Almquist</Name>
      <PTIN>P01309212</PTIN>
      <Phone>7812459999</Phone>
      <DatePrepared>2014-05-12</DatePrepared>
    </Preparer>
    <TaxYear>2012</TaxYear>
    <BuildTS>2015-11-30 17:44:51Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCount="10">
    <IRS990 documentId="RetDoc1038000001" referenceDocumentId="RetDoc1044400001">
      <NameOfPrincipalOfficerPerson>Robert D Meyer</NameOfPrincipalOfficerPerson>
      <AddressPrincipalOfficerUS>
        <AddressLine1>25 MARLBOROUGH ROAD</AddressLine1>
        <City>SOUTHBOROUGH</City>
        <State>MA</State>
        <ZIPCode>01772</ZIPCode>
      </AddressPrincipalOfficerUS>
      <GrossReceipts>34961808</GrossReceipts>
      <GroupReturnForAffiliates>0</GroupReturnForAffiliates>
      <Organization501c3>X</Organization501c3>
      <WebSite>www.stmarksschool.org</WebSite>
      <TypeOfOrganizationCorporation>X</TypeOfOrganizationCorporation>
      <YearFormation>1865</YearFormation>
      <StateLegalDomicile>MA</StateLegalDomicile>
      <ActivityOrMissionDescription>Refer to Schedule O, Page 60St. Mark's School educates young people for lives of leadership and service. Founded in 1865 as an intentionally small residential community, the School challenges its students to develop their particular analytic and creative capabilities by both inspiring their academic and spiritual curiosity and kindling their passion for discovery. We value cooperation over self-interest, and we encourage each person to explore his or her place in the larger world beyond our campus.</ActivityOrMissionDescription>
      <NbrVotingMembersGoverningBody>32</NbrVotingMembersGoverningBody>
      <NbrIndependentVotingMembers>31</NbrIndependentVotingMembers>
      <TotalNbrEmployees>258</TotalNbrEmployees>
      <TotalNbrVolunteers>34</TotalNbrVolunteers>
      <TotalGrossUBI>54382</TotalGrossUBI>
      <NetUnrelatedBusinessTxblIncome>49111</NetUnrelatedBusinessTxblIncome>
      <ContributionsGrantsPriorYear>3586195</ContributionsGrantsPriorYear>
      <ContributionsGrantsCurrentYear>16302517</ContributionsGrantsCurrentYear>
      <ProgramServiceRevenuePriorYear>15640524</ProgramServiceRevenuePriorYear>
      <ProgramServiceRevenueCY>16406688</ProgramServiceRevenueCY>
      <InvestmentIncomePriorYear>1086498</InvestmentIncomePriorYear>
      <InvestmentIncomeCurrentYear>1661372</InvestmentIncomeCurrentYear>
      <OtherRevenuePriorYear>541645</OtherRevenuePriorYear>
      <OtherRevenueCurrentYear>312389</OtherRevenueCurrentYear>
      <TotalRevenuePriorYear>20854862</TotalRevenuePriorYear>
      <TotalRevenueCurrentYear>34682966</TotalRevenueCurrentYear>
      <GrantsAndSimilarAmntsPriorYear>4008667</GrantsAndSimilarAmntsPriorYear>
      <GrantsAndSimilarAmntsCY>4221495</GrantsAndSimilarAmntsCY>
      <BenefitsPaidToMembersPriorYear>0</BenefitsPaidToMembersPriorYear>
      <BenefitsPaidToMembersCY>0</BenefitsPaidToMembersCY>
      <SalariesEtcPriorYear>10916280</SalariesEtcPriorYear>
      <SalariesEtcCurrentYear>11954992</SalariesEtcCurrentYear>
      <TotalProfFundrsngExpPriorYear>0</TotalProfFundrsngExpPriorYear>
      <TotalProfFundrsngExpCY>0</TotalProfFundrsngExpCY>
      <TotalFundrsngExpCurrentYear>1914725</TotalFundrsngExpCurrentYear>
      <OtherExpensePriorYear>11396774</OtherExpensePriorYear>
      <OtherExpensesCurrentYear>11976924</OtherExpensesCurrentYear>
      <TotalExpensesPriorYear>26321721</TotalExpensesPriorYear>
      <TotalExpensesCurrentYear>28153411</TotalExpensesCurrentYear>
      <RevenuesLessExpensesPriorYear>-5466859</RevenuesLessExpensesPriorYear>
      <RevenuesLessExpensesCY>6529555</RevenuesLessExpensesCY>
      <TotalAssetsBOY>174694040</TotalAssetsBOY>
      <TotalAssetsEOY>192962971</TotalAssetsEOY>
      <TotalLiabilitiesBOY>33602121</TotalLiabilitiesBOY>
      <TotalLiabilitiesEOY>36944170</TotalLiabilitiesEOY>
      <NetAssetsOrFundBalancesBOY>141091919</NetAssetsOrFundBalancesBOY>
      <NetAssetsOrFundBalancesEOY>156018801</NetAssetsOrFundBalancesEOY>
      <MissionDescription>Refer to Schedule O, Page 60</MissionDescription>
      <SignificantNewProgramServices>0</SignificantNewProgramServices>
      <SignificantChange>0</SignificantChange>
      <Expense>22271949</Expense>
      <Grants>4221495</Grants>
      <Revenue>16406688</Revenue>
      <Description>St. Mark's School of Southborough provides a high quality four year co-educational secondary level education to approximately 335 residential and day students.</Description>
      <TotalProgramServiceExpense>22271949</TotalProgramServiceExpense>
      <DescribedIn501C3 referenceDocumentId="RetDoc1039100001">1</DescribedIn501C3>
      <ScheduleBRequired referenceDocumentId="RetDoc1234500001">1</ScheduleBRequired>
      <PoliticalActivities>0</PoliticalActivities>
      <LobbyingActivities>0</LobbyingActivities>
      <SubjectToProxyTax>0</SubjectToProxyTax>
      <DonorAdvisedFunds referenceDocumentId="RetDoc1040000001">0</DonorAdvisedFunds>
      <ConservationEasements referenceDocumentId="RetDoc1040000001">0</ConservationEasements>
      <CollectionsOfArt referenceDocumentId="RetDoc1040000001">0</CollectionsOfArt>
      <CreditCounseling referenceDocumentId="RetDoc1040000001">0</CreditCounseling>
      <TermOrPermanentEndowments referenceDocumentId="RetDoc1040000001">1</TermOrPermanentEndowments>
      <ReportLandBldgEquip referenceDocumentId="RetDoc1040000001">1</ReportLandBldgEquip>
      <ReportInvestOthSecurities referenceDocumentId="RetDoc1040000001">1</ReportInvestOthSecurities>
      <ReportProgRelInvest referenceDocumentId="RetDoc1040000001">0</ReportProgRelInvest>
      <ReportOtherAssets referenceDocumentId="RetDoc1040000001">0</ReportOtherAssets>
      <ReportOtherLiabilities referenceDocumentId="RetDoc1040000001">1</ReportOtherLiabilities>
      <ReportFin48Footnote referenceDocumentId="RetDoc1040000001">1</ReportFin48Footnote>
      <IndependentAuditFinancialStmt referenceDocumentId="RetDoc1040000001">1</IndependentAuditFinancialStmt>
      <ConsolidatedAuditFinancialStmt referenceDocumentId="RetDoc1040000001">0</ConsolidatedAuditFinancialStmt>
      <School referenceDocumentId="RetDoc1040400001">1</School>
      <ForeignOffice>0</ForeignOffice>
      <ForeignActivities>0</ForeignActivities>
      <MoreThan5000KToOrganizations>0</MoreThan5000KToOrganizations>
      <MoreThan5000KToIndividuals>0</MoreThan5000KToIndividuals>
      <ProfessionalFundraising>0</ProfessionalFundraising>
      <FundraisingActivities>0</FundraisingActivities>
      <Gaming>0</Gaming>
      <Hospital>0</Hospital>
      <GrantsToOrganizations referenceDocumentId="RetDoc1041900001">0</GrantsToOrganizations>
      <GrantsToIndividuals referenceDocumentId="RetDoc1041900001">1</GrantsToIndividuals>
      <ScheduleJRequired referenceDocumentId="RetDoc1042400001">1</ScheduleJRequired>
      <TaxExemptBonds referenceDocumentId="RetDoc1053100001">1</TaxExemptBonds>
      <InvestTaxExemptBonds>0</InvestTaxExemptBonds>
      <EscrowAccount>0</EscrowAccount>
      <OnBehalfOfIssuer>0</OnBehalfOfIssuer>
      <ExcessBenefitTransaction>0</ExcessBenefitTransaction>
      <PriorExcessBenefitTransaction>0</PriorExcessBenefitTransaction>
      <LoanToOfficerOrDQP>0</LoanToOfficerOrDQP>
      <GrantToRelatedPerson>0</GrantToRelatedPerson>
      <BsnssRltnshpWithOrganization>0</BsnssRltnshpWithOrganization>
      <BsnssRltnshpThruFamilyMember>0</BsnssRltnshpThruFamilyMember>
      <OfficerEntityWithBsnssRltnshp>0</OfficerEntityWithBsnssRltnshp>
      <DeductibleNonCashContributions referenceDocumentId="RetDoc1042900001">1</DeductibleNonCashContributions>
      <DeductibleContributionsOfArt referenceDocumentId="RetDoc1042900001">0</DeductibleContributionsOfArt>
      <Terminated>0</Terminated>
      <PartialLiquidation>0</PartialLiquidation>
      <DisregardedEntity>0</DisregardedEntity>
      <RelatedEntity>0</RelatedEntity>
      <RelatedOrgControlledEntity>0</RelatedOrgControlledEntity>
      <TransfersToExemptNonChrtblOrg>0</TransfersToExemptNonChrtblOrg>
      <ActivitiesConductedPartnership>0</ActivitiesConductedPartnership>
      <ScheduleORequired>1</ScheduleORequired>
      <InfoInScheduleOPartV>X</InfoInScheduleOPartV>
      <NumberFormsTransmittedWith1096>85</NumberFormsTransmittedWith1096>
      <NumberW2GIncluded>0</NumberW2GIncluded>
      <ComplianceWithBackupWitholding>1</ComplianceWithBackupWitholding>
      <NumberOfEmployees>258</NumberOfEmployees>
      <EmploymentTaxReturnsFiled>1</EmploymentTaxReturnsFiled>
      <UnrelatedBusinessIncome>1</UnrelatedBusinessIncome>
      <Form990-TFiled>1</Form990-TFiled>
      <ForeignFinancialAccount>1</ForeignFinancialAccount>
      <NameOfForeignCountry>BD</NameOfForeignCountry>
      <NameOfForeignCountry>NL</NameOfForeignCountry>
      <NameOfForeignCountry>CJ</NameOfForeignCountry>
      <NameOfForeignCountry>EI</NameOfForeignCountry>
      <ProhibitedTaxShelterTrans>0</ProhibitedTaxShelterTrans>
      <TaxablePartyNotification>0</TaxablePartyNotification>
      <NonDeductibleContributions>0</NonDeductibleContributions>
      <QuidProQuoContributions>0</QuidProQuoContributions>
      <Form8282PropertyDisposedOf>0</Form8282PropertyDisposedOf>
      <FundsToPayPremiums>0</FundsToPayPremiums>
      <PremiumsPaid>0</PremiumsPaid>
      <IndoorTanningServices>0</IndoorTanningServices>
      <InfoInScheduleOPartVI>X</InfoInScheduleOPartVI>
      <NbrVotingGoverningBodyMembers>32</NbrVotingGoverningBodyMembers>
      <NumberIndependentVotingMembers>31</NumberIndependentVotingMembers>
      <FamilyOrBusinessRelationship>0</FamilyOrBusinessRelationship>
      <DelegationOfManagementDuties>0</DelegationOfManagementDuties>
      <ChangesToOrganizingDocs>0</ChangesToOrganizingDocs>
      <MaterialDiversionOrMisuse>0</MaterialDiversionOrMisuse>
      <MembersOrStockholders>0</MembersOrStockholders>
      <ElectionOfBoardMembers>0</ElectionOfBoardMembers>
      <DecisionsSubjectToApproval>0</DecisionsSubjectToApproval>
      <MinutesOfGoverningBody>1</MinutesOfGoverningBody>
      <MinutesOfCommittees>1</MinutesOfCommittees>
      <OfficerMailingAddress>0</OfficerMailingAddress>
      <LocalChapters>0</LocalChapters>
      <Form990ProvidedToGoverningBody>1</Form990ProvidedToGoverningBody>
      <ConflictOfInterestPolicy>1</ConflictOfInterestPolicy>
      <AnnualDisclosureCoveredPersons>1</AnnualDisclosureCoveredPersons>
      <RegularMonitoringEnforcement>1</RegularMonitoringEnforcement>
      <WhistleblowerPolicy>1</WhistleblowerPolicy>
      <DocumentRetentionPolicy>1</DocumentRetentionPolicy>
      <CompensationProcessCEO>1</CompensationProcessCEO>
      <CompensationProcessOther>1</CompensationProcessOther>
      <InvestmentInJointVenture>0</InvestmentInJointVenture>
      <StatesWhereCopyOfReturnIsFiled>MA</StatesWhereCopyOfReturnIsFiled>
      <OtherWebsite>X</OtherWebsite>
      <UponRequest>X</UponRequest>
      <TheBooksAreInCareOf>
        <NameBusiness>
          <BusinessNameLine1>John Clemens</BusinessNameLine1>
        </NameBusiness>
        <TelephoneNumber>5087866172</TelephoneNumber>
        <AddressUS>
          <AddressLine1>St Marks School of Southborough</AddressLine1>
          <City>Southborough</City>
          <State>MA</State>
          <ZIPCode>01772</ZIPCode>
        </AddressUS>
      </TheBooksAreInCareOf>
      <Form990PartVIISectionA>
        <NamePerson>G Thomas Martinson</NamePerson>
        <Title>President</Title>
        <AverageHoursPerWeek>3.00</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <Officer>X</Officer>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>Alys Reynders Scott</NamePerson>
        <Title>Vice President</Title>
        <AverageHoursPerWeek>3.00</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <Officer>X</Officer>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>Francisco J Lopez-Balboa</NamePerson>
        <Title>Treasurer</Title>
        <AverageHoursPerWeek>3.00</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <Officer>X</Officer>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>The Rt Reverend J Clark Grew</NamePerson>
        <Title>Clerk</Title>
        <AverageHoursPerWeek>3.00</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <Officer>X</Officer>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>Ella Auchincloss</NamePerson>
        <Title>Trustee</Title>
        <AverageHoursPerWeek>2.00</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>James Bartlett</NamePerson>
        <Title>Trustee</Title>
        <AverageHoursPerWeek>2.00</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>R William Burgess Jr</NamePerson>
        <Title>Trustee</Title>
        <AverageHoursPerWeek>2.00</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>Matthew D Chamberlin</NamePerson>
        <Title>Trustee</Title>
        <AverageHoursPerWeek>2.00</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>Sungyong Cho</NamePerson>
        <Title>Trustee</Title>
        <AverageHoursPerWeek>2.00</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>James Dolce</NamePerson>
        <Title>Trustee</Title>
        <AverageHoursPerWeek>2.00</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>Michael Egan</NamePerson>
        <Title>Trustee</Title>
        <AverageHoursPerWeek>2.00</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>Nicholas S Everett</NamePerson>
        <Title>Trustee</Title>
        <AverageHoursPerWeek>2.00</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>Thomas Ewald</NamePerson>
        <Title>Trustee</Title>
        <AverageHoursPerWeek>2.00</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>David Harmon</NamePerson>
        <Title>Trustee</Title>
        <AverageHoursPerWeek>2.00</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>Michael T Hawkins</NamePerson>
        <Title>Trustee</Title>
        <AverageHoursPerWeek>2.00</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>Winston Hutchins</NamePerson>
        <Title>Trustee</Title>
        <AverageHoursPerWeek>2.00</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>Julia Krapf</NamePerson>
        <Title>Trustee</Title>
        <AverageHoursPerWeek>2.00</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>Michael Moore</NamePerson>
        <Title>Trustee</Title>
        <AverageHoursPerWeek>2.00</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>Willard Morgan</NamePerson>
        <Title>Trustee</Title>
        <AverageHoursPerWeek>2.00</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>Georgia Nassikas</NamePerson>
        <Title>Trustee</Title>
        <AverageHoursPerWeek>2.00</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>Rita Pang</NamePerson>
        <Title>Trustee</Title>
        <AverageHoursPerWeek>2.00</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>Lars Perkins</NamePerson>
        <Title>Trustee</Title>
        <AverageHoursPerWeek>2.00</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>Mackin Pulsifer</NamePerson>
        <Title>Trustee</Title>
        <AverageHoursPerWeek>2.00</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>Dale Ryder</NamePerson>
        <Title>Trustee</Title>
        <AverageHoursPerWeek>2.00</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>Vanessa Ryan</NamePerson>
        <Title>Trustee</Title>
        <AverageHoursPerWeek>2.00</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>Margaret H Sanel</NamePerson>
        <Title>Trustee</Title>
        <AverageHoursPerWeek>2.00</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>James Tanton</NamePerson>
        <Title>Trustee</Title>
        <AverageHoursPerWeek>2.00</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>Paul Thompson III</NamePerson>
        <Title>Trustee</Title>
        <AverageHoursPerWeek>2.00</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>Myron Wick</NamePerson>
        <Title>Trustee</Title>
        <AverageHoursPerWeek>2.00</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>Bruce B Wilson</NamePerson>
        <Title>Trustee</Title>
        <AverageHoursPerWeek>2.00</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>Takson Wong</NamePerson>
        <Title>Trustee</Title>
        <AverageHoursPerWeek>2.00</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>John C Warren</NamePerson>
        <Title>Head of School</Title>
        <AverageHoursPerWeek>40.00</AverageHoursPerWeek>
        <KeyEmployee>X</KeyEmployee>
        <ReportableCompFromOrganization>238410</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>44421</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>Kirk I Swenson</NamePerson>
        <Title>Executive Director of Development</Title>
        <AverageHoursPerWeek>40.00</AverageHoursPerWeek>
        <HighestCompensatedEmployee>X</HighestCompensatedEmployee>
        <ReportableCompFromOrganization>206544</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>36397</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>Robert D Meyer</NamePerson>
        <Title>Dir. of Finance and Business Ops.</Title>
        <AverageHoursPerWeek>40.00</AverageHoursPerWeek>
        <HighestCompensatedEmployee>X</HighestCompensatedEmployee>
        <ReportableCompFromOrganization>158934</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>30630</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>Kenneth J Griffin</NamePerson>
        <Title>Director of Technology</Title>
        <AverageHoursPerWeek>40.00</AverageHoursPerWeek>
        <HighestCompensatedEmployee>X</HighestCompensatedEmployee>
        <ReportableCompFromOrganization>133735</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>28540</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>Stephanie D Katz</NamePerson>
        <Title>Dir. of Alumni &amp; Parent Engagement</Title>
        <AverageHoursPerWeek>40.00</AverageHoursPerWeek>
        <HighestCompensatedEmployee>X</HighestCompensatedEmployee>
        <ReportableCompFromOrganization>119018</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>27321</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>Anne E Behnke</NamePerson>
        <Title>Director of Admissions</Title>
        <AverageHoursPerWeek>40.00</AverageHoursPerWeek>
        <HighestCompensatedEmployee>X</HighestCompensatedEmployee>
        <ReportableCompFromOrganization>110708</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>18143</OtherCompensation>
      </Form990PartVIISectionA>
      <TotalReportableCompFromOrg>967349</TotalReportableCompFromOrg>
      <TotalReportableCompFrmRltdOrgs>0</TotalReportableCompFrmRltdOrgs>
      <TotalOtherCompensation>185452</TotalOtherCompensation>
      <NumberIndividualsGT100K>10</NumberIndividualsGT100K>
      <FormersListed>0</FormersListed>
      <TotalCompGT150K>1</TotalCompGT150K>
      <CompensationFromOtherSources>0</CompensationFromOtherSources>
      <ContractorCompensation>
        <NameOfContractor>
          <NameBusiness>
            <BusinessNameLine1>Consigli Construction Co Inc</BusinessNameLine1>
          </NameBusiness>
        </NameOfContractor>
        <AddressOfContractor>
          <AddressUS>
            <AddressLine1>72 Summer Street</AddressLine1>
            <City>Medford</City>
            <State>MA</State>
            <ZIPCode>02189</ZIPCode>
          </AddressUS>
        </AddressOfContractor>
        <DescriptionOfServices>Contractor</DescriptionOfServices>
        <Compensation>6988598</Compensation>
      </ContractorCompensation>
      <ContractorCompensation>
        <NameOfContractor>
          <NameBusiness>
            <BusinessNameLine1>Flik Independent Schools</BusinessNameLine1>
          </NameBusiness>
        </NameOfContractor>
        <AddressOfContractor>
          <AddressUS>
            <AddressLine1>91337 Collections Center Drive</AddressLine1>
            <City>Chicago</City>
            <State>IL</State>
            <ZIPCode>606931337</ZIPCode>
          </AddressUS>
        </AddressOfContractor>
        <DescriptionOfServices>Food Services</DescriptionOfServices>
        <Compensation>1302020</Compensation>
      </ContractorCompensation>
      <ContractorCompensation>
        <NameOfContractor>
          <NameBusiness>
            <BusinessNameLine1>USI Consulting Group</BusinessNameLine1>
          </NameBusiness>
        </NameOfContractor>
        <AddressOfContractor>
          <AddressUS>
            <AddressLine1>95 Glastonbury Boulevard Suite 102</AddressLine1>
            <City>Glastonbury</City>
            <State>CT</State>
            <ZIPCode>06033</ZIPCode>
          </AddressUS>
        </AddressOfContractor>
        <DescriptionOfServices>Pension &amp; Annuity</DescriptionOfServices>
        <Compensation>565154</Compensation>
      </ContractorCompensation>
      <ContractorCompensation>
        <NameOfContractor>
          <NameBusiness>
            <BusinessNameLine1>Architectural Resources Cambridge Inc</BusinessNameLine1>
          </NameBusiness>
        </NameOfContractor>
        <AddressOfContractor>
          <AddressUS>
            <AddressLine1>5 Cambridge Center</AddressLine1>
            <City>Cambridge</City>
            <State>MA</State>
            <ZIPCode>02142</ZIPCode>
          </AddressUS>
        </AddressOfContractor>
        <DescriptionOfServices>Architect</DescriptionOfServices>
        <Compensation>438764</Compensation>
      </ContractorCompensation>
      <ContractorCompensation>
        <NameOfContractor>
          <NameBusiness>
            <BusinessNameLine1>Focus Technology Solutions</BusinessNameLine1>
          </NameBusiness>
        </NameOfContractor>
        <AddressOfContractor>
          <AddressUS>
            <AddressLine1>93 Ledge Road</AddressLine1>
            <City>Seabrook</City>
            <State>NH</State>
            <ZIPCode>03784</ZIPCode>
          </AddressUS>
        </AddressOfContractor>
        <DescriptionOfServices>Technology Contractor</DescriptionOfServices>
        <Compensation>247279</Compensation>
      </ContractorCompensation>
      <NumberOfContractorsGT100K>12</NumberOfContractorsGT100K>
      <AllOtherContributions>16302517</AllOtherContributions>
      <NoncashContributions>1912078</NoncashContributions>
      <TotalContributions>16302517</TotalContributions>
      <ProgramServiceRevenue>
        <Description>Tuition</Description>
        <BusinessCode>611600</BusinessCode>
        <TotalRevenueColumn>16406688</TotalRevenueColumn>
        <RelatedOrExemptFunctionIncome>16406688</RelatedOrExemptFunctionIncome>
      </ProgramServiceRevenue>
      <TotalProgramServiceRevenue>16406688</TotalProgramServiceRevenue>
      <InvestmentIncome>
        <TotalRevenueColumn>36140</TotalRevenueColumn>
        <ExclusionAmount>36140</ExclusionAmount>
      </InvestmentIncome>
      <GrossAmountSalesAssets>
        <Securities>1625232</Securities>
      </GrossAmountSalesAssets>
      <LessCostOthBasisSalesExpenses>
        <Securities>0</Securities>
      </LessCostOthBasisSalesExpenses>
      <GainOrLoss>
        <Securities>1625232</Securities>
      </GainOrLoss>
      <NetGainOrLossInvestments>
        <TotalRevenueColumn>1625232</TotalRevenueColumn>
        <UnrelatedBusinessRevenue>117976</UnrelatedBusinessRevenue>
        <ExclusionAmount>1507256</ExclusionAmount>
      </NetGainOrLossInvestments>
      <GrossSalesOfInventory>355769</GrossSalesOfInventory>
      <CostOfGoodsSold>278842</CostOfGoodsSold>
      <NetIncomeOrLoss>
        <TotalRevenueColumn>76927</TotalRevenueColumn>
        <ExclusionAmount>76927</ExclusionAmount>
      </NetIncomeOrLoss>
      <OtherRevenueMisc>
        <Description>Explorations Program</Description>
        <BusinessCode>611710</BusinessCode>
        <TotalRevenueColumn>232015</TotalRevenueColumn>
        <RelatedOrExemptFunctionIncome>232015</RelatedOrExemptFunctionIncome>
      </OtherRevenueMisc>
      <OtherRevenueMisc>
        <Description>Miscellaneous Income</Description>
        <BusinessCode>611710</BusinessCode>
        <TotalRevenueColumn>40400</TotalRevenueColumn>
        <RelatedOrExemptFunctionIncome>40400</RelatedOrExemptFunctionIncome>
      </OtherRevenueMisc>
      <OtherRevenueMisc>
        <Description>Hockey Rink</Description>
        <BusinessCode>611710</BusinessCode>
        <TotalRevenueColumn>26641</TotalRevenueColumn>
        <RelatedOrExemptFunctionIncome>26641</RelatedOrExemptFunctionIncome>
      </OtherRevenueMisc>
      <MiscellaneousRevenue>
        <TotalRevenueColumn>-63594</TotalRevenueColumn>
        <UnrelatedBusinessRevenue>-63594</UnrelatedBusinessRevenue>
      </MiscellaneousRevenue>
      <TotalOtherRevenue>235462</TotalOtherRevenue>
      <TotalRevenue>
        <TotalRevenueColumn>34682966</TotalRevenueColumn>
        <RelatedOrExemptFunctionIncome>16705744</RelatedOrExemptFunctionIncome>
        <UnrelatedBusinessRevenue>54382</UnrelatedBusinessRevenue>
        <ExclusionAmount>1620323</ExclusionAmount>
      </TotalRevenue>
      <GrantsToDomesticIndividuals>
        <Total>4221495</Total>
        <ProgramServices>4221495</ProgramServices>
      </GrantsToDomesticIndividuals>
      <CompCurrentOfficersDirectors>
        <Total>287598</Total>
        <ManagementAndGeneral>287598</ManagementAndGeneral>
      </CompCurrentOfficersDirectors>
      <OtherSalariesAndWages>
        <Total>8895702</Total>
        <ProgramServices>6202981</ProgramServices>
        <ManagementAndGeneral>1571045</ManagementAndGeneral>
        <Fundraising>1121676</Fundraising>
      </OtherSalariesAndWages>
      <PensionPlanContributions>
        <Total>5394</Total>
        <ManagementAndGeneral>5394</ManagementAndGeneral>
      </PensionPlanContributions>
      <OtherEmployeeBenefits>
        <Total>2766298</Total>
        <ProgramServices>1899411</ProgramServices>
        <ManagementAndGeneral>530745</ManagementAndGeneral>
        <Fundraising>336142</Fundraising>
      </OtherEmployeeBenefits>
      <FeesForServicesLegal>
        <Total>30436</Total>
        <ManagementAndGeneral>30436</ManagementAndGeneral>
      </FeesForServicesLegal>
      <FeesForServicesAccounting>
        <Total>34500</Total>
        <ManagementAndGeneral>34500</ManagementAndGeneral>
      </FeesForServicesAccounting>
      <FeesForServicesOther>
        <Total>2376871</Total>
        <ProgramServices>1993316</ProgramServices>
        <ManagementAndGeneral>284920</ManagementAndGeneral>
        <Fundraising>98635</Fundraising>
      </FeesForServicesOther>
      <OfficeExpenses>
        <Total>908358</Total>
        <ProgramServices>566129</ProgramServices>
        <ManagementAndGeneral>249480</ManagementAndGeneral>
        <Fundraising>92749</Fundraising>
      </OfficeExpenses>
      <InformationTechnology>
        <Total>611014</Total>
        <ProgramServices>407343</ProgramServices>
        <ManagementAndGeneral>203671</ManagementAndGeneral>
      </InformationTechnology>
      <Occupancy>
        <Total>1243885</Total>
        <ProgramServices>1085225</ProgramServices>
        <ManagementAndGeneral>158660</ManagementAndGeneral>
      </Occupancy>
      <Travel>
        <Total>415351</Total>
        <ProgramServices>272184</ProgramServices>
        <ManagementAndGeneral>95389</ManagementAndGeneral>
        <Fundraising>47778</Fundraising>
      </Travel>
      <ConferencesMeetings>
        <Total>263279</Total>
        <ProgramServices>169333</ProgramServices>
        <ManagementAndGeneral>64442</ManagementAndGeneral>
        <Fundraising>29504</Fundraising>
      </ConferencesMeetings>
      <Interest>
        <Total>1031021</Total>
        <ProgramServices>1031021</ProgramServices>
      </Interest>
      <DepreciationDepletion>
        <Total>4057653</Total>
        <ProgramServices>3938005</ProgramServices>
        <ManagementAndGeneral>119648</ManagementAndGeneral>
      </DepreciationDepletion>
      <OtherExpenses>
        <Description>UBIT Tax</Description>
        <Total>181321</Total>
        <ProgramServices>181321</ProgramServices>
      </OtherExpenses>
      <OtherExpenses>
        <Description>Miscellaneous</Description>
        <Total>419579</Total>
        <ProgramServices>167241</ProgramServices>
        <ManagementAndGeneral>164658</ManagementAndGeneral>
        <Fundraising>87680</Fundraising>
      </OtherExpenses>
      <OtherExpenses>
        <Description>Special Functions</Description>
        <Total>183159</Total>
        <ProgramServices>33985</ProgramServices>
        <ManagementAndGeneral>64491</ManagementAndGeneral>
        <Fundraising>84683</Fundraising>
      </OtherExpenses>
      <OtherExpenses>
        <Description>Memberships and Subscri</Description>
        <Total>94882</Total>
        <ProgramServices>46056</ProgramServices>
        <ManagementAndGeneral>44602</ManagementAndGeneral>
        <Fundraising>4224</Fundraising>
      </OtherExpenses>
      <AllOtherExpenses>
        <Total>125615</Total>
        <ProgramServices>56903</ProgramServices>
        <ManagementAndGeneral>57058</ManagementAndGeneral>
        <Fundraising>11654</Fundraising>
      </AllOtherExpenses>
      <TotalFunctionalExpenses>
        <Total>28153411</Total>
        <ProgramServices>22271949</ProgramServices>
        <ManagementAndGeneral>3966737</ManagementAndGeneral>
        <Fundraising>1914725</Fundraising>
      </TotalFunctionalExpenses>
      <CashNonInterestBearing>
        <BOY>7758615</BOY>
        <EOY>9581394</EOY>
      </CashNonInterestBearing>
      <PledgesAndGrantsReceivable>
        <BOY>2205005</BOY>
        <EOY>6555457</EOY>
      </PledgesAndGrantsReceivable>
      <AccountsReceivable>
        <BOY>138833</BOY>
        <EOY>271653</EOY>
      </AccountsReceivable>
      <OtherNotesLoansReceivableNet>
        <BOY>32698</BOY>
        <EOY>68329</EOY>
      </OtherNotesLoansReceivableNet>
      <InventoriesForSaleOrUse>
        <BOY>180827</BOY>
        <EOY>154198</EOY>
      </InventoriesForSaleOrUse>
      <PrepaidExpensesDeferredCharges>
        <BOY>994992</BOY>
        <EOY>829447</EOY>
      </PrepaidExpensesDeferredCharges>
      <LandBuildingsEquipmentBasis>101650017</LandBuildingsEquipmentBasis>
      <LandBldgEquipmentAccumDeprec>53743626</LandBldgEquipmentAccumDeprec>
      <LandBuildingsEquipmentBasisNet>
        <BOY>41458548</BOY>
        <EOY>47906391</EOY>
      </LandBuildingsEquipmentBasisNet>
      <InvestmentsPubTradedSecurities>
        <BOY>3519484</BOY>
        <EOY>7633009</EOY>
      </InvestmentsPubTradedSecurities>
      <InvestmentsOtherSecurities>
        <BOY>118405038</BOY>
        <EOY>119963093</EOY>
      </InvestmentsOtherSecurities>
      <TotalAssets>
        <BOY>174694040</BOY>
        <EOY>192962971</EOY>
      </TotalAssets>
      <AccountsPayableAccruedExpenses>
        <BOY>6496356</BOY>
        <EOY>6473803</EOY>
      </AccountsPayableAccruedExpenses>
      <DeferredRevenue>
        <BOY>6368845</BOY>
        <EOY>8026247</EOY>
      </DeferredRevenue>
      <TaxExemptBondLiabilities>
        <BOY>19500025</BOY>
        <EOY>21625449</EOY>
      </TaxExemptBondLiabilities>
      <OtherLiabilities>
        <BOY>1236895</BOY>
        <EOY>818671</EOY>
      </OtherLiabilities>
      <TotalLiabilities>
        <BOY>33602121</BOY>
        <EOY>36944170</EOY>
      </TotalLiabilities>
      <FollowSFAS117>X</FollowSFAS117>
      <UnrestrictedNetAssets>
        <BOY>50717266</BOY>
        <EOY>54837290</EOY>
      </UnrestrictedNetAssets>
      <TemporarilyRestrictedNetAssets>
        <BOY>44262080</BOY>
        <EOY>54160571</EOY>
      </TemporarilyRestrictedNetAssets>
      <PermanentlyRestrictedNetAssets>
        <BOY>46112573</BOY>
        <EOY>47020940</EOY>
      </PermanentlyRestrictedNetAssets>
      <TotalNetAssetsFundBalances>
        <BOY>141091919</BOY>
        <EOY>156018801</EOY>
      </TotalNetAssetsFundBalances>
      <TotalLiabNetAssetsFundBalances>
        <BOY>174694040</BOY>
        <EOY>192962971</EOY>
      </TotalLiabNetAssetsFundBalances>
      <InfoInScheduleOPartXI>X</InfoInScheduleOPartXI>
      <ReconcilationRevenueExpenses>6529555</ReconcilationRevenueExpenses>
      <ReconciliationUnrealizedInvest>8265779</ReconciliationUnrealizedInvest>
      <ReconcilationOtherChanges>131548</ReconcilationOtherChanges>
      <MethodOfAccountingAccrual>X</MethodOfAccountingAccrual>
      <AccountantCompileOrReview>0</AccountantCompileOrReview>
      <FSAudited>1</FSAudited>
      <FSAuditedBasis>
        <FinancialStatementSeparate>X</FinancialStatementSeparate>
      </FSAuditedBasis>
      <AuditCommittee>1</AuditCommittee>
      <FederalGrantAuditRequired>0</FederalGrantAuditRequired>
    </IRS990>
    <IRS990ScheduleA documentId="RetDoc1039100001">
      <School170b1Aii>X</School170b1Aii>
    </IRS990ScheduleA>
    <IRS990ScheduleB documentId="RetDoc1234500001">
      <ContributorInfo>
        <ContributorNumber>RESTRICTED</ContributorNumber>
        <ContributorNameBusiness>
          <BusinessNameLine1>RESTRICTED</BusinessNameLine1>
        </ContributorNameBusiness>
        <ContributorAddressUS>
          <AddressLine1>RESTRICTED</AddressLine1>
          <AddressLine2>RESTRICTED</AddressLine2>
          <City>RESTRICTED</City>
          <State>RESTRICTED</State>
          <ZIPCode>RESTRICTED</ZIPCode>
        </ContributorAddressUS>
        <AggregateContributions>RESTRICTED</AggregateContributions>
      </ContributorInfo>
    </IRS990ScheduleB>
    <IRS990ScheduleD documentId="RetDoc1040000001">
      <CurrentYear>
        <BeginningOfYearBalance>105685493</BeginningOfYearBalance>
        <Contributions>1662007</Contributions>
        <InvestmentEarningsOrLosses>9368112</InvestmentEarningsOrLosses>
        <OtherExpenditures>6457916</OtherExpenditures>
        <EndOfYearBalance>110257696</EndOfYearBalance>
      </CurrentYear>
      <CurrentYearMinus1Year>
        <BeginningOfYearBalance>110694128</BeginningOfYearBalance>
        <Contributions>812673</Contributions>
        <InvestmentEarningsOrLosses>1070584</InvestmentEarningsOrLosses>
        <OtherExpenditures>6891892</OtherExpenditures>
        <EndOfYearBalance>105685493</EndOfYearBalance>
      </CurrentYearMinus1Year>
      <CurrentYearMinus2Years>
        <BeginningOfYearBalance>95735616</BeginningOfYearBalance>
        <Contributions>3437211</Contributions>
        <InvestmentEarningsOrLosses>17472773</InvestmentEarningsOrLosses>
        <OtherExpenditures>5951472</OtherExpenditures>
        <EndOfYearBalance>110694128</EndOfYearBalance>
      </CurrentYearMinus2Years>
      <CurrentYearMinus3Years>
        <BeginningOfYearBalance>90971501</BeginningOfYearBalance>
        <Contributions>175012</Contributions>
        <InvestmentEarningsOrLosses>11140369</InvestmentEarningsOrLosses>
        <OtherExpenditures>6551266</OtherExpenditures>
        <EndOfYearBalance>95735616</EndOfYearBalance>
      </CurrentYearMinus3Years>
      <CurrentYearMinus4Years>
        <BeginningOfYearBalance>125204256</BeginningOfYearBalance>
        <Contributions>715286</Contributions>
        <InvestmentEarningsOrLosses>-24861521</InvestmentEarningsOrLosses>
        <OtherExpenditures>10086520</OtherExpenditures>
        <EndOfYearBalance>90971501</EndOfYearBalance>
      </CurrentYearMinus4Years>
      <BoardDesignatedEOYBalance>0.24370</BoardDesignatedEOYBalance>
      <PermanentEndowmentEOYBalance>0.75630</PermanentEndowmentEOYBalance>
      <TermEndowmentEOYBalance>0.00000</TermEndowmentEOYBalance>
      <EndowmentsHeldByUnrelatedOrgs>0</EndowmentsHeldByUnrelatedOrgs>
      <EndowmentsHeldByRelatedOrgs>0</EndowmentsHeldByRelatedOrgs>
      <Land>
        <OtherCostOrOtherBasis>306000</OtherCostOrOtherBasis>
        <BookValue>306000</BookValue>
      </Land>
      <Buildings>
        <OtherCostOrOtherBasis>81276571</OtherCostOrOtherBasis>
        <Depreciation>39529760</Depreciation>
        <BookValue>41746811</BookValue>
      </Buildings>
      <Equipment>
        <OtherCostOrOtherBasis>18976276</OtherCostOrOtherBasis>
        <Depreciation>14213866</Depreciation>
        <BookValue>4762410</BookValue>
      </Equipment>
      <OtherLandBuildings>
        <OtherCostOrOtherBasis>1091170</OtherCostOrOtherBasis>
        <BookValue>1091170</BookValue>
      </OtherLandBuildings>
      <TotalOfBookValueLandBuildings>47906391</TotalOfBookValueLandBuildings>
      <OtherSecurities>
        <Description>Multi-strategy investment fund</Description>
        <BookValue>93745080</BookValue>
        <MethodOfValuation>F</MethodOfValuation>
      </OtherSecurities>
      <OtherSecurities>
        <Description>Private equity funds</Description>
        <BookValue>19375071</BookValue>
        <MethodOfValuation>F</MethodOfValuation>
      </OtherSecurities>
      <OtherSecurities>
        <Description>Other funds</Description>
        <BookValue>6842942</BookValue>
        <MethodOfValuation>F</MethodOfValuation>
      </OtherSecurities>
      <TotalOfBookValueSecurities>119963093</TotalOfBookValueSecurities>
      <OtherLiabilities>
        <Description>Annuities Payable</Description>
        <Amount>661301</Amount>
      </OtherLiabilities>
      <OtherLiabilities>
        <Description>Interest Rate Swap</Description>
        <Amount>157370</Amount>
      </OtherLiabilities>
      <TotalOfAmounts>818671</TotalOfAmounts>
      <FootnoteInPartXIII>X</FootnoteInPartXIII>
      <TotRevenueEtcAuditedFinclStmt>38956319</TotRevenueEtcAuditedFinclStmt>
      <NetUnrealizedGainsInvestments>8265779</NetUnrealizedGainsInvestments>
      <OtherRevenues>410390</OtherRevenues>
      <RevenueNotRptdF990>8676169</RevenueNotRptdF990>
      <RevenueSubtotal>30280150</RevenueSubtotal>
      <OtherRevenuesNotIncluded>4402816</OtherRevenuesNotIncluded>
      <RevenueNotRptdOnFinStmt>4402816</RevenueNotRptdOnFinStmt>
      <TotalRevenuePerForm990>34682966</TotalRevenuePerForm990>
      <TotExpensesEtcAuditedFinclStmt>24029437</TotExpensesEtcAuditedFinclStmt>
      <OtherExpensesIncluded>278842</OtherExpensesIncluded>
      <ExpensesNotRptdF990>278842</ExpensesNotRptdF990>
      <ExpensesSubtotal>23750595</ExpensesSubtotal>
      <OtherExpensesNotIncluded>4402816</OtherExpensesNotIncluded>
      <ExpensesNotRptdOnFinStmt>4402816</ExpensesNotRptdOnFinStmt>
      <TotalExpensesPerForm990>28153411</TotalExpensesPerForm990>
      <Form990ScheduleDPartXIII>
        <Identifier>Description of Intended Use of Endowment Funds:</Identifier>
        <ReturnReference>Part V, Line 4:</ReturnReference>
        <Explanation>The School's primary objective is long-term capital appreciation which together with income will provide for the growth of the endowment while allowing support for current activities. The School has adopted a spending policy whereby a percentage of the historical average market value of the endowment for program services and capital needs is distributed and treated as support for operating activities. To the extent the total return requirement for the current year is not fulfilled by interest and dividends, the School utilizes realized gains of its endowment. To the extent the total return requirement for the current year is exceeded by interest and dividends, the School adds the excess income to its endowment.</Explanation>
      </Form990ScheduleDPartXIII>
      <Form990ScheduleDPartXIII>
        <Identifier>Description of Uncertain Tax Positions Under FIN 48:</Identifier>
        <ReturnReference>Part X, Line 2:</ReturnReference>
        <Explanation>In determining the recognition of uncertain tax positions, the School applies a more-likely-than-not recognition threshold and determines the measurement of uncertain tax positions considering the amounts and probabilities of the outcomes that could be realized upon ultimate settlement with taxing authorities. As of June 30, 2013, the School has no uncertain tax positions that qualify for either recognition or disclosure in the financial statements.</Explanation>
      </Form990ScheduleDPartXIII>
      <Form990ScheduleDPartXIII>
        <Identifier>Part XI, Line 2d - Other Adjustments:</Identifier>
        <Explanation>Inventory Cost of Sales 278,842. Change in Fair Value of Interest Rate Swap 131,548.</Explanation>
      </Form990ScheduleDPartXIII>
      <Form990ScheduleDPartXIII>
        <Identifier>Part XI, Line 4b - Other Adjustments:</Identifier>
        <Explanation>Financial Aid 4,221,495. Unrelated Business Income Tax 181,321.</Explanation>
      </Form990ScheduleDPartXIII>
      <Form990ScheduleDPartXIII>
        <Identifier>Part XII, Line 2d - Other Adjustments:</Identifier>
        <Explanation>Inventory Cost of Sales 278,842.</Explanation>
      </Form990ScheduleDPartXIII>
      <Form990ScheduleDPartXIII>
        <Identifier>Part XII, Line 4b - Other Adjustments:</Identifier>
        <Explanation>Financial Aid 4,221,495. Unrelated Business Income Tax 181,321.</Explanation>
      </Form990ScheduleDPartXIII>
    </IRS990ScheduleD>
    <IRS990ScheduleE documentId="RetDoc1040400001">
      <NondiscriminatoryPolicyStmt>1</NondiscriminatoryPolicyStmt>
      <PolicyStatementInBrochuresEtc>1</PolicyStatementInBrochuresEtc>
      <PolicyPublViaBroadcastMedia>1</PolicyPublViaBroadcastMedia>
      <MaintRacialCompositionRecords>1</MaintRacialCompositionRecords>
      <MaintScholarshipsRecords>1</MaintScholarshipsRecords>
      <MaintCopiesOfBrochuresEtc>1</MaintCopiesOfBrochuresEtc>
      <MaintCopiesOfAllSolicitations>1</MaintCopiesOfAllSolicitations>
      <DiscriminateRaceStudentsRights>0</DiscriminateRaceStudentsRights>
      <DiscriminateRaceAdmissPolicies>0</DiscriminateRaceAdmissPolicies>
      <DiscriminateRaceEmplmnFaculty>0</DiscriminateRaceEmplmnFaculty>
      <DiscriminateRaceScholarships>0</DiscriminateRaceScholarships>
      <DiscriminateRaceEducPolicies>0</DiscriminateRaceEducPolicies>
      <DiscriminateRaceUseOfFclts>0</DiscriminateRaceUseOfFclts>
      <DiscriminateRaceAthleticProg>0</DiscriminateRaceAthleticProg>
      <DiscriminateRaceOtherActy>0</DiscriminateRaceOtherActy>
      <GovernmentFinancialAidReceived>0</GovernmentFinancialAidReceived>
      <GovernmentFinancialAidRevoked>0</GovernmentFinancialAidRevoked>
      <ComplianceWithRevProc7550>1</ComplianceWithRevProc7550>
      <Form990ScheduleEPartII>
        <Identifier>Explanation of Nondiscriminatory Policy Publication</Identifier>
        <ReturnReference>Schedule E, Part I, Line 3</ReturnReference>
        <Explanation>Racially nondiscriminatory policy is included in all communications to the community. The School is a member of the Association of Independent Schools of New England (AISNE). AISNE annually publishes a racially nondiscriminatory policy in various newspapers throughout New England for its members.</Explanation>
      </Form990ScheduleEPartII>
    </IRS990ScheduleE>
    <IRS990ScheduleI documentId="RetDoc1041900001">
      <RecordsMaintained>1</RecordsMaintained>
      <Form990ScheduleIPartIII>
        <TypeOfGrant>Financial Aid</TypeOfGrant>
        <NumberOfRecipients>104</NumberOfRecipients>
        <AmountOfCashGrant>4221495</AmountOfCashGrant>
      </Form990ScheduleIPartIII>
      <Form990ScheduleIPartIV>
        <Identifier>Procedure for Monitoring Grants in the U.S.:</Identifier>
        <ReturnReference>Part I, Line 2:</ReturnReference>
        <Explanation>Schedule I, Part I, Line 2: Financial aid is based solely upon need. The School utilizes an independent outside service bureau to help determine a family's ability to pay school costs. This service and process helps ensure that the School uses the same methods and objective procedures as other schools in evaluating an applicant's application. Employee dependents are exempt from this process and receive 100% financial aid. Total financial aid is approved by the Board of Trustees. The Head of School approves all individual financial aid recipients.</Explanation>
      </Form990ScheduleIPartIV>
    </IRS990ScheduleI>
    <IRS990ScheduleJ documentId="RetDoc1042400001">
      <HousingAllowanceOrResidence>X</HousingAllowanceOrResidence>
      <WrittenPolicyReTAndEExpenses>1</WrittenPolicyReTAndEExpenses>
      <SubstantiationRequired>0</SubstantiationRequired>
      <CompensationCommittee>X</CompensationCommittee>
      <Form990OfOtherOrganizations>X</Form990OfOtherOrganizations>
      <WrittenEmploymentContract>X</WrittenEmploymentContract>
      <CompensationSurvey>X</CompensationSurvey>
      <BoardOrCommitteeApproval>X</BoardOrCommitteeApproval>
      <SeverancePayment>0</SeverancePayment>
      <SupplementalNonqualRetirePlan>0</SupplementalNonqualRetirePlan>
      <EquityBasedCompArrangement>0</EquityBasedCompArrangement>
      <CompBasedOnRevenueOfFilingOrg>0</CompBasedOnRevenueOfFilingOrg>
      <CompBasedOnRevenueRelatedOrgs>0</CompBasedOnRevenueRelatedOrgs>
      <CompBasedNetEarningsFilingOrg>0</CompBasedNetEarningsFilingOrg>
      <CompBasedNetEarningsRelateOrgs>0</CompBasedNetEarningsRelateOrgs>
      <AnyNonFixedPayments>0</AnyNonFixedPayments>
      <InitialContractException>0</InitialContractException>
      <Form990ScheduleJPartII>
        <NamePerson>John C Warren</NamePerson>
        <Title>Head of School</Title>
        <BaseCompensationFilingOrg>238410</BaseCompensationFilingOrg>
        <CompBasedOnRelatedOrgs>0</CompBasedOnRelatedOrgs>
        <BonusFilingOrg>0</BonusFilingOrg>
        <BonusRelatedOrgs>0</BonusRelatedOrgs>
        <OtherCompensationFilingOrg>0</OtherCompensationFilingOrg>
        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
        <DeferredCompFilingOrg>0</DeferredCompFilingOrg>
        <DeferredCompRelatedOrgs>0</DeferredCompRelatedOrgs>
        <NontaxableBenefitsFilingOrg>44421</NontaxableBenefitsFilingOrg>
        <NontaxableBenefitsRelatedOrgs>0</NontaxableBenefitsRelatedOrgs>
        <TotalCompensationFilingOrg>282831</TotalCompensationFilingOrg>
        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
      <Form990ScheduleJPartII>
        <NamePerson>Kirk I Swenson</NamePerson>
        <Title>Executive Director of Development</Title>
        <BaseCompensationFilingOrg>206544</BaseCompensationFilingOrg>
        <CompBasedOnRelatedOrgs>0</CompBasedOnRelatedOrgs>
        <BonusFilingOrg>0</BonusFilingOrg>
        <BonusRelatedOrgs>0</BonusRelatedOrgs>
        <OtherCompensationFilingOrg>0</OtherCompensationFilingOrg>
        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
        <DeferredCompFilingOrg>0</DeferredCompFilingOrg>
        <DeferredCompRelatedOrgs>0</DeferredCompRelatedOrgs>
        <NontaxableBenefitsFilingOrg>36397</NontaxableBenefitsFilingOrg>
        <NontaxableBenefitsRelatedOrgs>0</NontaxableBenefitsRelatedOrgs>
        <TotalCompensationFilingOrg>242941</TotalCompensationFilingOrg>
        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
      <Form990ScheduleJPartII>
        <NamePerson>Robert D Meyer</NamePerson>
        <Title>Dir. of Finance and Business Ops.</Title>
        <BaseCompensationFilingOrg>158934</BaseCompensationFilingOrg>
        <CompBasedOnRelatedOrgs>0</CompBasedOnRelatedOrgs>
        <BonusFilingOrg>0</BonusFilingOrg>
        <BonusRelatedOrgs>0</BonusRelatedOrgs>
        <OtherCompensationFilingOrg>0</OtherCompensationFilingOrg>
        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
        <DeferredCompFilingOrg>0</DeferredCompFilingOrg>
        <DeferredCompRelatedOrgs>0</DeferredCompRelatedOrgs>
        <NontaxableBenefitsFilingOrg>30630</NontaxableBenefitsFilingOrg>
        <NontaxableBenefitsRelatedOrgs>0</NontaxableBenefitsRelatedOrgs>
        <TotalCompensationFilingOrg>189564</TotalCompensationFilingOrg>
        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
      <Form990ScheduleJPartII>
        <NamePerson>Kenneth J Griffin</NamePerson>
        <Title>Director of Technology</Title>
        <BaseCompensationFilingOrg>133735</BaseCompensationFilingOrg>
        <CompBasedOnRelatedOrgs>0</CompBasedOnRelatedOrgs>
        <BonusFilingOrg>0</BonusFilingOrg>
        <BonusRelatedOrgs>0</BonusRelatedOrgs>
        <OtherCompensationFilingOrg>0</OtherCompensationFilingOrg>
        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
        <DeferredCompFilingOrg>0</DeferredCompFilingOrg>
        <DeferredCompRelatedOrgs>0</DeferredCompRelatedOrgs>
        <NontaxableBenefitsFilingOrg>28540</NontaxableBenefitsFilingOrg>
        <NontaxableBenefitsRelatedOrgs>0</NontaxableBenefitsRelatedOrgs>
        <TotalCompensationFilingOrg>162275</TotalCompensationFilingOrg>
        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
    </IRS990ScheduleJ>
    <IRS990ScheduleK documentId="RetDoc1053100001">
      <Form990ScheduleKPartI>
        <BondReferenceCd>A</BondReferenceCd>
        <IssuerName>
          <BusinessNameLine1>Massachusetts Development Finance Agency</BusinessNameLine1>
        </IssuerName>
        <IssuerEIN>043431814</IssuerEIN>
        <DateIssued>2010-08-17</DateIssued>
        <IssuePrice>10105000</IssuePrice>
        <DescriptionOfPurpose>Finance construction costs</DescriptionOfPurpose>
        <Defeased>0</Defeased>
        <OnBehalfOfIssuer>0</OnBehalfOfIssuer>
        <PoolFinancing>0</PoolFinancing>
      </Form990ScheduleKPartI>
      <Form990ScheduleKPartI>
        <BondReferenceCd>B</BondReferenceCd>
        <IssuerName>
          <BusinessNameLine1>Massachusetts Development Finance Agency</BusinessNameLine1>
        </IssuerName>
        <IssuerEIN>043431814</IssuerEIN>
        <DateIssued>2004-08-05</DateIssued>
        <IssuePrice>16700000</IssuePrice>
        <DescriptionOfPurpose>Finance construction costs</DescriptionOfPurpose>
        <Defeased>0</Defeased>
        <OnBehalfOfIssuer>0</OnBehalfOfIssuer>
        <PoolFinancing>0</PoolFinancing>
      </Form990ScheduleKPartI>
      <Form990ScheduleKPartI>
        <BondReferenceCd>C</BondReferenceCd>
        <IssuerName>
          <BusinessNameLine1>Massachusetts Development Finance Agency</BusinessNameLine1>
        </IssuerName>
        <IssuerEIN>043431814</IssuerEIN>
        <DateIssued>2012-09-20</DateIssued>
        <IssuePrice>25000000</IssuePrice>
        <DescriptionOfPurpose>Refinance / Finance construction costs</DescriptionOfPurpose>
        <Defeased>0</Defeased>
        <OnBehalfOfIssuer>0</OnBehalfOfIssuer>
        <PoolFinancing>0</PoolFinancing>
      </Form990ScheduleKPartI>
      <Form990ScheduleKPartII>
        <BondReferenceCd>A</BondReferenceCd>
        <AmountRetired>591525</AmountRetired>
        <TotalProceeds>10105000</TotalProceeds>
        <CapitalizedInterest>139025</CapitalizedInterest>
        <CapitalExpenditures>9965975</CapitalExpenditures>
        <CurrentRefunding>0</CurrentRefunding>
        <AdvanceRefunding>0</AdvanceRefunding>
        <FinalAllocationMade>1</FinalAllocationMade>
        <AdequateBooksAndRecdsMaintaind>1</AdequateBooksAndRecdsMaintaind>
      </Form990ScheduleKPartII>
      <Form990ScheduleKPartII>
        <BondReferenceCd>B</BondReferenceCd>
        <AmountRetired>16700000</AmountRetired>
        <TotalProceeds>16700000</TotalProceeds>
        <CapitalizedInterest>404000</CapitalizedInterest>
        <CapitalExpenditures>16296000</CapitalExpenditures>
        <CurrentRefunding>0</CurrentRefunding>
        <AdvanceRefunding>0</AdvanceRefunding>
        <FinalAllocationMade>1</FinalAllocationMade>
        <AdequateBooksAndRecdsMaintaind>1</AdequateBooksAndRecdsMaintaind>
      </Form990ScheduleKPartII>
      <Form990ScheduleKPartII>
        <BondReferenceCd>C</BondReferenceCd>
        <TotalProceeds>12111974</TotalProceeds>
        <CapitalizedInterest>159669</CapitalizedInterest>
        <CapitalExpenditures>2502305</CapitalExpenditures>
        <OtherSpentProceeds>9450000</OtherSpentProceeds>
        <CurrentRefunding>0</CurrentRefunding>
        <AdvanceRefunding>0</AdvanceRefunding>
        <FinalAllocationMade>1</FinalAllocationMade>
        <AdequateBooksAndRecdsMaintaind>1</AdequateBooksAndRecdsMaintaind>
      </Form990ScheduleKPartII>
      <Form990ScheduleKPartIII>
        <BondReferenceCd>A</BondReferenceCd>
        <OwningBondFinancedProperty>0</OwningBondFinancedProperty>
        <AnyLeaseArrangements>0</AnyLeaseArrangements>
        <MngmentCntrctBondFinancdPrprty>0</MngmentCntrctBondFinancdPrprty>
        <AnyResearchAgreements>0</AnyResearchAgreements>
        <PrcntgePrvtBusinessUseByOthers>0.00000</PrcntgePrvtBusinessUseByOthers>
        <PercentageOfPrvtBusinessReUBI>0.00000</PercentageOfPrvtBusinessReUBI>
        <TotalPrivateBusinessUse>0.00000</TotalPrivateBusinessUse>
        <BondIssMeetPrvtSecurityPayTest>0</BondIssMeetPrvtSecurityPayTest>
        <ChangeInUseBondFinancedProp>0</ChangeInUseBondFinancedProp>
        <NonQualifiedBondRemedProcdrs>0</NonQualifiedBondRemedProcdrs>
      </Form990ScheduleKPartIII>
      <Form990ScheduleKPartIII>
        <BondReferenceCd>B</BondReferenceCd>
        <OwningBondFinancedProperty>0</OwningBondFinancedProperty>
        <AnyLeaseArrangements>0</AnyLeaseArrangements>
        <MngmentCntrctBondFinancdPrprty>0</MngmentCntrctBondFinancdPrprty>
        <AnyResearchAgreements>0</AnyResearchAgreements>
        <PrcntgePrvtBusinessUseByOthers>0.00000</PrcntgePrvtBusinessUseByOthers>
        <PercentageOfPrvtBusinessReUBI>0.00000</PercentageOfPrvtBusinessReUBI>
        <TotalPrivateBusinessUse>0.00000</TotalPrivateBusinessUse>
        <BondIssMeetPrvtSecurityPayTest>0</BondIssMeetPrvtSecurityPayTest>
        <ChangeInUseBondFinancedProp>0</ChangeInUseBondFinancedProp>
        <NonQualifiedBondRemedProcdrs>0</NonQualifiedBondRemedProcdrs>
      </Form990ScheduleKPartIII>
      <Form990ScheduleKPartIII>
        <BondReferenceCd>C</BondReferenceCd>
        <OwningBondFinancedProperty>0</OwningBondFinancedProperty>
        <AnyLeaseArrangements>0</AnyLeaseArrangements>
        <MngmentCntrctBondFinancdPrprty>0</MngmentCntrctBondFinancdPrprty>
        <AnyResearchAgreements>0</AnyResearchAgreements>
        <PrcntgePrvtBusinessUseByOthers>0.00000</PrcntgePrvtBusinessUseByOthers>
        <PercentageOfPrvtBusinessReUBI>0.00000</PercentageOfPrvtBusinessReUBI>
        <TotalPrivateBusinessUse>0.00000</TotalPrivateBusinessUse>
        <BondIssMeetPrvtSecurityPayTest>0</BondIssMeetPrvtSecurityPayTest>
        <ChangeInUseBondFinancedProp>0</ChangeInUseBondFinancedProp>
        <NonQualifiedBondRemedProcdrs>0</NonQualifiedBondRemedProcdrs>
      </Form990ScheduleKPartIII>
      <Form990ScheduleKPartIV>
        <BondReferenceCd>A</BondReferenceCd>
        <Form8038TFiled>0</Form8038TFiled>
        <RebateNotDueYet>0</RebateNotDueYet>
        <ExceptionToRebate>0</ExceptionToRebate>
        <NoRebateDue>0</NoRebateDue>
        <VariableRateIssue>0</VariableRateIssue>
        <HedgeIdentifiedInBooksAndRecds>0</HedgeIdentifiedInBooksAndRecds>
        <GrossProceedsInvestedInGIC>0</GrossProceedsInvestedInGIC>
        <GrossProceedsInvested>0</GrossProceedsInvested>
        <WrittenProcToMonitorReqs>0</WrittenProcToMonitorReqs>
      </Form990ScheduleKPartIV>
      <Form990ScheduleKPartIV>
        <BondReferenceCd>B</BondReferenceCd>
        <Form8038TFiled>0</Form8038TFiled>
        <RebateNotDueYet>0</RebateNotDueYet>
        <ExceptionToRebate>0</ExceptionToRebate>
        <NoRebateDue>0</NoRebateDue>
        <VariableRateIssue>1</VariableRateIssue>
        <HedgeIdentifiedInBooksAndRecds>0</HedgeIdentifiedInBooksAndRecds>
        <GrossProceedsInvestedInGIC>0</GrossProceedsInvestedInGIC>
        <GrossProceedsInvested>0</GrossProceedsInvested>
        <WrittenProcToMonitorReqs>0</WrittenProcToMonitorReqs>
      </Form990ScheduleKPartIV>
      <Form990ScheduleKPartIV>
        <BondReferenceCd>C</BondReferenceCd>
        <Form8038TFiled>0</Form8038TFiled>
        <RebateNotDueYet>0</RebateNotDueYet>
        <ExceptionToRebate>0</ExceptionToRebate>
        <NoRebateDue>0</NoRebateDue>
        <VariableRateIssue>1</VariableRateIssue>
        <HedgeIdentifiedInBooksAndRecds>0</HedgeIdentifiedInBooksAndRecds>
        <GrossProceedsInvestedInGIC>0</GrossProceedsInvestedInGIC>
        <GrossProceedsInvested>0</GrossProceedsInvested>
        <WrittenProcToMonitorReqs>0</WrittenProcToMonitorReqs>
      </Form990ScheduleKPartIV>
      <Form990ScheduleKPartV>
        <BondReferenceCd>A</BondReferenceCd>
        <ProcToUndertkCorrectiveAction>1</ProcToUndertkCorrectiveAction>
      </Form990ScheduleKPartV>
      <Form990ScheduleKPartV>
        <BondReferenceCd>B</BondReferenceCd>
        <ProcToUndertkCorrectiveAction>1</ProcToUndertkCorrectiveAction>
      </Form990ScheduleKPartV>
      <Form990ScheduleKPartV>
        <BondReferenceCd>C</BondReferenceCd>
        <ProcToUndertkCorrectiveAction>1</ProcToUndertkCorrectiveAction>
      </Form990ScheduleKPartV>
    </IRS990ScheduleK>
    <IRS990ScheduleM documentId="RetDoc1042900001">
      <SecuritiesPubliclyTraded>
        <NonCashCheckbox>X</NonCashCheckbox>
        <NumberOfContributions>46</NumberOfContributions>
        <NoncashContribsRptdF990>1912078</NoncashContribsRptdF990>
        <MethodOfDeterminingRevenues>Market Value</MethodOfDeterminingRevenues>
      </SecuritiesPubliclyTraded>
      <AnyPropertyThatMustBeHeld>0</AnyPropertyThatMustBeHeld>
      <ReviewProcessUnusualNCGifts>0</ReviewProcessUnusualNCGifts>
      <ThirdPartiesUsed>0</ThirdPartiesUsed>
    </IRS990ScheduleM>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <GeneralExplanation>
        <ReturnReference>Form 990, Part VI, Section B, line 11</ReturnReference>
        <Explanation>The School's Treasurer, Business Manager and Controller are responsible for overseeing the preparation of IRS Form 990 (990). The 990 and its supporting schedules were prepared by the public accounting firm, Tonneson + Co (Tonneson), responsible for auditing the School's financial statements. Tonneson's work was based on information provided to them during the course of the audit by the School's accounting department, plus additional work requested specific to the 990. The Treasurer, Business Manager and Controller performed a detailed review of the completed 990 and reported the results of its review to the Finance Committee. The Finance Committee recommended to the Board of Trustees the approval of the Form 990. The Board of Trustees then voted to approve the Form 990.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>Form 990, Part VI, Section B, line 12c</ReturnReference>
        <Explanation>All members of the Board of Trustees, Committee members, officers and management-level employees are required to disclose annually any existing or potential conflict of interest. The Board of Trustees may also provide for such corrective action as it deems appropriate by reason of a failure to disclose such conflict of interest, which may include removal from a position or office. Disclosure forms shall be updated annually or sooner if changed circumstances require disclosure. All persons subject to this policy are expected to update their "Statement Concerning Possible Duality of Interest and Conflict of Interest" at any time during the year that the information requested on the form changes. The administration and maintenance of the "Statement Concerning Possible Duality of Interest and Conflict of Interest" shall be the responsibility of the both the Head of School and the President of the Board of Trustees.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>Form 990, Part VI, Section B, line 15</ReturnReference>
        <Explanation>The Compensation Committee of Trustees initially determines compensation for the Head of School and reviews compensation for other key employees based on benchmarking with area peer schools.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>Form 990, Part VI, Section C, line 19</ReturnReference>
        <Explanation>The governing documents, conflict of interest policy, financial statements and Form 990 are immediately made available to the public by calling the School's office, walking into the School's office or mailing in a request to the School. The Form 990 and financial statements are also available through the Massachusetts Attorney General's office/website. Additionally, the financial statements are available to the public on the Electronic Municipal Market Access website.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>Changes in Net Assets or Fund Balances:</Identifier>
        <ReturnReference>Form 990, Part XI, line 9:</ReturnReference>
        <Explanation>Change in Fair Value of Interest Rate Swap 131,548.</Explanation>
      </GeneralExplanation>
    </IRS990ScheduleO>
  </ReturnData>
</Return>