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        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>William C Vrattos</PersonNm>
        <TitleTxt>Board Member</TitleTxt>
        <AverageHoursPerWeekRt>4</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>James H R Windels</PersonNm>
        <TitleTxt>Board Member</TitleTxt>
        <AverageHoursPerWeekRt>4</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Nancy Yang</PersonNm>
        <TitleTxt>Board Member</TitleTxt>
        <AverageHoursPerWeekRt>4</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Jonathan D Klein</PersonNm>
        <TitleTxt>President</TitleTxt>
        <AverageHoursPerWeekRt>4</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Ann Bakewell Woodward</PersonNm>
        <TitleTxt>Vice President</TitleTxt>
        <AverageHoursPerWeekRt>4</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Peter C Erichsen</PersonNm>
        <TitleTxt>Secretary</TitleTxt>
        <AverageHoursPerWeekRt>4</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Diana S Ferguson</PersonNm>
        <TitleTxt>Treasurer</TitleTxt>
        <AverageHoursPerWeekRt>4</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Temba Maqubela</PersonNm>
        <TitleTxt>Headmaster</TitleTxt>
        <AverageHoursPerWeekRt>60</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>460720</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>182010</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Arthur Diaz</PersonNm>
        <TitleTxt>Chief Financial Officer</TitleTxt>
        <AverageHoursPerWeekRt>50</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0</AverageHoursPerWeekRltdOrgRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>274475</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>90529</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>John MacEachern</PersonNm>
        <TitleTxt>Director of Development</TitleTxt>
        <AverageHoursPerWeekRt>50</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0</AverageHoursPerWeekRltdOrgRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>280727</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>44146</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Ian Gracey</PersonNm>
        <TitleTxt>Director of Admissions</TitleTxt>
        <AverageHoursPerWeekRt>50</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0</AverageHoursPerWeekRltdOrgRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>172270</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>81094</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Elizabeth Preston</PersonNm>
        <TitleTxt>Chief Technology Officer</TitleTxt>
        <AverageHoursPerWeekRt>50</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0</AverageHoursPerWeekRltdOrgRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>165437</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>24113</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Harold W Anderson III</PersonNm>
        <TitleTxt>Assistant Headmaster</TitleTxt>
        <AverageHoursPerWeekRt>50</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0</AverageHoursPerWeekRltdOrgRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>161932</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>125541</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Elizabeth Lawrence</PersonNm>
        <TitleTxt>Development Leadership Gift Officer</TitleTxt>
        <AverageHoursPerWeekRt>50</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0</AverageHoursPerWeekRltdOrgRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>148157</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>39470</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <TotalReportableCompFromOrgAmt>1663718</TotalReportableCompFromOrgAmt>
      <TotReportableCompRltdOrgAmt>0</TotReportableCompRltdOrgAmt>
      <TotalOtherCompensationAmt>586903</TotalOtherCompensationAmt>
      <IndivRcvdGreaterThan100KCnt>23</IndivRcvdGreaterThan100KCnt>
      <FormerOfcrEmployeesListedInd>0</FormerOfcrEmployeesListedInd>
      <TotalCompGreaterThan150KInd>1</TotalCompGreaterThan150KInd>
      <CompensationFromOtherSrcsInd>0</CompensationFromOtherSrcsInd>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>Mahan Slate Roofing Company</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>699 Silver Street</AddressLine1Txt>
            <CityNm>Agawam</CityNm>
            <StateAbbreviationCd>MA</StateAbbreviationCd>
            <ZIPCd>01001</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>Construction</ServicesDesc>
        <CompensationAmt>1769508</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>FLIK</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>2 International Drive</AddressLine1Txt>
            <CityNm>Rye Brook</CityNm>
            <StateAbbreviationCd>NY</StateAbbreviationCd>
            <ZIPCd>10573</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>Food Service</ServicesDesc>
        <CompensationAmt>1679541</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>Cambridge Associates</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>125 High Street</AddressLine1Txt>
            <CityNm>Boston</CityNm>
            <StateAbbreviationCd>MA</StateAbbreviationCd>
            <ZIPCd>02110</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>Investment Consultant</ServicesDesc>
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      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <PersonNm>Eagle Cleaning Corporation</PersonNm>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>997 Millbury Street</AddressLine1Txt>
            <AddressLine2Txt>Suite A</AddressLine2Txt>
            <CityNm>Worcester</CityNm>
            <StateAbbreviationCd>MA</StateAbbreviationCd>
            <ZIPCd>01607</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>Custodial Service</ServicesDesc>
        <CompensationAmt>606464</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>Nashoba Paving Company</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>45 Power Road</AddressLine1Txt>
            <CityNm>Westford</CityNm>
            <StateAbbreviationCd>MA</StateAbbreviationCd>
            <ZIPCd>01886</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>Construction</ServicesDesc>
        <CompensationAmt>496799</CompensationAmt>
      </ContractorCompensationGrp>
      <CntrctRcvdGreaterThan100KCnt>18</CntrctRcvdGreaterThan100KCnt>
      <FederatedCampaignsAmt>0</FederatedCampaignsAmt>
      <MembershipDuesAmt>0</MembershipDuesAmt>
      <FundraisingAmt>0</FundraisingAmt>
      <RelatedOrganizationsAmt>0</RelatedOrganizationsAmt>
      <GovernmentGrantsAmt>0</GovernmentGrantsAmt>
      <AllOtherContributionsAmt>17798145</AllOtherContributionsAmt>
      <NoncashContributionsAmt>1281760</NoncashContributionsAmt>
      <TotalContributionsAmt>17798145</TotalContributionsAmt>
      <ProgramServiceRevenueGrp>
        <Desc>Tuition</Desc>
        <BusinessCd>611600</BusinessCd>
        <TotalRevenueColumnAmt>20827300</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>20827300</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>0</ExclusionAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>Technology Support Fee</Desc>
        <BusinessCd>611710</BusinessCd>
        <TotalRevenueColumnAmt>228000</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>228000</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>0</ExclusionAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>Laptop Rental and Lease</Desc>
        <BusinessCd>611710</BusinessCd>
        <TotalRevenueColumnAmt>159975</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>159975</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>0</ExclusionAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>Health Center Fee</Desc>
        <BusinessCd>611710</BusinessCd>
        <TotalRevenueColumnAmt>125600</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>125600</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>0</ExclusionAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>Application Fees</Desc>
        <BusinessCd>611710</BusinessCd>
        <TotalRevenueColumnAmt>55700</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>55700</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>0</ExclusionAmt>
      </ProgramServiceRevenueGrp>
      <TotalOthProgramServiceRevGrp>
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        <RelatedOrExemptFuncIncomeAmt>88034</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>0</ExclusionAmt>
      </TotalOthProgramServiceRevGrp>
      <TotalProgramServiceRevenueAmt>21484609</TotalProgramServiceRevenueAmt>
      <InvestmentIncomeGrp>
        <TotalRevenueColumnAmt>6205820</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>0</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>-635582</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>6841402</ExclusionAmt>
      </InvestmentIncomeGrp>
      <IncmFromInvestBondProceedsGrp>
        <TotalRevenueColumnAmt>0</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>0</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>0</ExclusionAmt>
      </IncmFromInvestBondProceedsGrp>
      <RoyaltiesRevenueGrp>
        <TotalRevenueColumnAmt>0</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>0</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>0</ExclusionAmt>
      </RoyaltiesRevenueGrp>
      <GrossRentsGrp>
        <RealAmt>308133</RealAmt>
        <PersonalAmt>0</PersonalAmt>
      </GrossRentsGrp>
      <LessRentalExpensesGrp>
        <RealAmt>224705</RealAmt>
        <PersonalAmt>0</PersonalAmt>
      </LessRentalExpensesGrp>
      <RentalIncomeOrLossGrp>
        <RealAmt>83428</RealAmt>
        <PersonalAmt>0</PersonalAmt>
      </RentalIncomeOrLossGrp>
      <NetRentalIncomeOrLossGrp>
        <TotalRevenueColumnAmt>83428</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>0</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>-1108</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>84536</ExclusionAmt>
      </NetRentalIncomeOrLossGrp>
      <GrossAmountSalesAssetsGrp>
        <SecuritiesAmt>23976571</SecuritiesAmt>
        <OtherAmt>0</OtherAmt>
      </GrossAmountSalesAssetsGrp>
      <LessCostOthBasisSalesExpnssGrp>
        <SecuritiesAmt>12539862</SecuritiesAmt>
        <OtherAmt>44209</OtherAmt>
      </LessCostOthBasisSalesExpnssGrp>
      <GainOrLossGrp>
        <SecuritiesAmt>11436709</SecuritiesAmt>
        <OtherAmt>-44209</OtherAmt>
      </GainOrLossGrp>
      <NetGainOrLossInvestmentsGrp>
        <TotalRevenueColumnAmt>11392500</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>0</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>17327</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>11375173</ExclusionAmt>
      </NetGainOrLossInvestmentsGrp>
      <ContriRptFundraisingEventAmt>0</ContriRptFundraisingEventAmt>
      <GrossSalesOfInventoryAmt>111398</GrossSalesOfInventoryAmt>
      <CostOfGoodsSoldAmt>71911</CostOfGoodsSoldAmt>
      <NetIncomeOrLossGrp>
        <TotalRevenueColumnAmt>39487</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>0</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>39487</ExclusionAmt>
      </NetIncomeOrLossGrp>
      <OtherRevenueTotalAmt>0</OtherRevenueTotalAmt>
      <TotalRevenueGrp>
        <TotalRevenueColumnAmt>57003989</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>21484609</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>-619363</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>18340598</ExclusionAmt>
      </TotalRevenueGrp>
      <GrantsToDomesticOrgsGrp>
        <TotalAmt>151046</TotalAmt>
        <ProgramServicesAmt>151046</ProgramServicesAmt>
      </GrantsToDomesticOrgsGrp>
      <GrantsToDomesticIndividualsGrp>
        <TotalAmt>7189027</TotalAmt>
        <ProgramServicesAmt>7189027</ProgramServicesAmt>
      </GrantsToDomesticIndividualsGrp>
      <ForeignGrantsGrp>
        <TotalAmt>0</TotalAmt>
        <ProgramServicesAmt>0</ProgramServicesAmt>
      </ForeignGrantsGrp>
      <BenefitsToMembersGrp>
        <TotalAmt>0</TotalAmt>
        <ProgramServicesAmt>0</ProgramServicesAmt>
      </BenefitsToMembersGrp>
      <CompCurrentOfcrDirectorsGrp>
        <TotalAmt>1032429</TotalAmt>
        <ProgramServicesAmt>0</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1032429</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
      </CompCurrentOfcrDirectorsGrp>
      <CompDisqualPersonsGrp>
        <TotalAmt>145652</TotalAmt>
        <ProgramServicesAmt>145652</ProgramServicesAmt>
        <ManagementAndGeneralAmt>0</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
      </CompDisqualPersonsGrp>
      <OtherSalariesAndWagesGrp>
        <TotalAmt>12982259</TotalAmt>
        <ProgramServicesAmt>9732088</ProgramServicesAmt>
        <ManagementAndGeneralAmt>2009235</ManagementAndGeneralAmt>
        <FundraisingAmt>1240936</FundraisingAmt>
      </OtherSalariesAndWagesGrp>
      <PensionPlanContributionsGrp>
        <TotalAmt>2374069</TotalAmt>
        <ProgramServicesAmt>1576722</ProgramServicesAmt>
        <ManagementAndGeneralAmt>560194</ManagementAndGeneralAmt>
        <FundraisingAmt>237153</FundraisingAmt>
      </PensionPlanContributionsGrp>
      <OtherEmployeeBenefitsGrp>
        <TotalAmt>3328304</TotalAmt>
        <ProgramServicesAmt>1673582</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1420924</ManagementAndGeneralAmt>
        <FundraisingAmt>233798</FundraisingAmt>
      </OtherEmployeeBenefitsGrp>
      <PayrollTaxesGrp>
        <TotalAmt>888589</TotalAmt>
        <ProgramServicesAmt>590150</ProgramServicesAmt>
        <ManagementAndGeneralAmt>209675</ManagementAndGeneralAmt>
        <FundraisingAmt>88764</FundraisingAmt>
      </PayrollTaxesGrp>
      <FeesForServicesManagementGrp>
        <TotalAmt>0</TotalAmt>
        <ProgramServicesAmt>0</ProgramServicesAmt>
        <ManagementAndGeneralAmt>0</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
      </FeesForServicesManagementGrp>
      <FeesForServicesLegalGrp>
        <TotalAmt>92861</TotalAmt>
        <ProgramServicesAmt>1741</ProgramServicesAmt>
        <ManagementAndGeneralAmt>91120</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
      </FeesForServicesLegalGrp>
      <FeesForServicesAccountingGrp>
        <TotalAmt>151792</TotalAmt>
        <ProgramServicesAmt>12542</ProgramServicesAmt>
        <ManagementAndGeneralAmt>139250</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
      </FeesForServicesAccountingGrp>
      <FeesForServicesLobbyingGrp>
        <TotalAmt>0</TotalAmt>
        <ProgramServicesAmt>0</ProgramServicesAmt>
        <ManagementAndGeneralAmt>0</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
      </FeesForServicesLobbyingGrp>
      <FeesForSrvcInvstMgmntFeesGrp>
        <TotalAmt>2698575</TotalAmt>
        <ProgramServicesAmt>0</ProgramServicesAmt>
        <ManagementAndGeneralAmt>2698575</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
      </FeesForSrvcInvstMgmntFeesGrp>
      <FeesForServicesOtherGrp>
        <TotalAmt>1289927</TotalAmt>
        <ProgramServicesAmt>444608</ProgramServicesAmt>
        <ManagementAndGeneralAmt>819902</ManagementAndGeneralAmt>
        <FundraisingAmt>25417</FundraisingAmt>
      </FeesForServicesOtherGrp>
      <AdvertisingGrp>
        <TotalAmt>472669</TotalAmt>
        <ProgramServicesAmt>103162</ProgramServicesAmt>
        <ManagementAndGeneralAmt>236342</ManagementAndGeneralAmt>
        <FundraisingAmt>133165</FundraisingAmt>
      </AdvertisingGrp>
      <OfficeExpensesGrp>
        <TotalAmt>177457</TotalAmt>
        <ProgramServicesAmt>52097</ProgramServicesAmt>
        <ManagementAndGeneralAmt>73396</ManagementAndGeneralAmt>
        <FundraisingAmt>51964</FundraisingAmt>
      </OfficeExpensesGrp>
      <InformationTechnologyGrp>
        <TotalAmt>489590</TotalAmt>
        <ProgramServicesAmt>126926</ProgramServicesAmt>
        <ManagementAndGeneralAmt>299421</ManagementAndGeneralAmt>
        <FundraisingAmt>63243</FundraisingAmt>
      </InformationTechnologyGrp>
      <RoyaltiesGrp>
        <TotalAmt>0</TotalAmt>
        <ProgramServicesAmt>0</ProgramServicesAmt>
        <ManagementAndGeneralAmt>0</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
      </RoyaltiesGrp>
      <OccupancyGrp>
        <TotalAmt>3022510</TotalAmt>
        <ProgramServicesAmt>3011755</ProgramServicesAmt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule D, Part III, Line 4</FormAndLineReferenceDesc>
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      <SupplementalInformationDetail>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule D, Part X, Line 2</FormAndLineReferenceDesc>
        <ExplanationTxt>The School follows FASB ASC 740, Income Taxes, which clarifies the accounting for uncertain income tax positions by prescribing the recognition threshold a tax position is required to meet before being recognized in the financial statements. The School recognizes a tax benefit from an uncertain tax position only if it is more likely than not that the tax position will be sustained on examination by the taxing authorities. Management evaluated the School's tax positions and concluded that the School had no material uncertain income tax positions as of June 30, 2019 or 2018. The School is no longer subject to income tax examinations by the U.S. federal, state, or local tax authorities for fiscal years before 2016. The School will account for interest and penalties related to uncertain tax positions, if any, as part of tax expense.</ExplanationTxt>
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      <SupplementalInformationDetail>
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        <ExplanationTxt>Groton's diversity and inclusion mission statement is noted on its website. It notes that Groton School mission is to inspire lives of character, scholarship, leadership, and service within a diverse, inclusive, and close-knit community.</ExplanationTxt>
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        <EmployeeCnt>0</EmployeeCnt>
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        <SpecificServicesProvidedTxt>School sponsored global education trip to South Africa that included eighteen students.</SpecificServicesProvidedTxt>
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      <AccountActivitiesOutsideUSGrp>
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        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>Program Services</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>School sponsored music trip to Spain that included twenty one students.</SpecificServicesProvidedTxt>
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      <AccountActivitiesOutsideUSGrp>
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        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>Program Services</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>School sponsored trip to Ireland that included twenty two students participating in a soccer tournament.</SpecificServicesProvidedTxt>
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      <AccountActivitiesOutsideUSGrp>
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        <EmployeeCnt>0</EmployeeCnt>
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        <SpecificServicesProvidedTxt>Fundraising receptions in South Korea and China.</SpecificServicesProvidedTxt>
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        <EmployeeCnt>0</EmployeeCnt>
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        <SpecificServicesProvidedTxt>School sponsored global education trip to Peru that included fifteen students.</SpecificServicesProvidedTxt>
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      <AccountActivitiesOutsideUSGrp>
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        <EmployeeCnt>0</EmployeeCnt>
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        <SpecificServicesProvidedTxt>School sponsored trip to South Africa involving eighteen students participating in a squash tournament.</SpecificServicesProvidedTxt>
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      <AccountActivitiesOutsideUSGrp>
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        <SpecificServicesProvidedTxt>Admissions receptions held in China and South Korea.</SpecificServicesProvidedTxt>
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      <AccountActivitiesOutsideUSGrp>
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        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
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        <SpecificServicesProvidedTxt>Board meetings held in Bermuda.</SpecificServicesProvidedTxt>
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      <AccountActivitiesOutsideUSGrp>
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        <EmployeeCnt>0</EmployeeCnt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule J, Part I, Line 1a</FormAndLineReferenceDesc>
        <ExplanationTxt>Faculty are required to live in on-campus housing as a condition of employment. The Headmaster's home includes some space that is reserved for School related meetings and student activities. The cost of maintaining this allotted space is paid by the School and recorded as an operating expense. The Headmaster's contract, which is approved by the Board President and the Compensation Committee, includes the cost of residential cleaning. The cost is recorded by the School as a taxable benefit and reported on the W-2. The School will only pay for the cost of a traveling spouse when they are an authorized participant in School related functions. In such a case, the cost is treated as a non-taxable work-related event. The discretionary account is provided to the Headmaster as part of the approved annual budget. The account is used to fund small School related expenses and, as a result, is not reported as a taxable fringe benefit.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule J, Part I, Line 3</FormAndLineReferenceDesc>
        <ExplanationTxt>The salary of Groton's Headmaster is determined annually by the Compensation Committee of the Board. As input to their decision, the committee reviews the results of the annual ABOPS salary survey. ABOPS is a 40-member organization of independent schools whom we consider to be our peers.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule J, Part I, Line 4</FormAndLineReferenceDesc>
        <ExplanationTxt>The Headmaster's contract, which is approved by the President of the Board and the Compensation Committee, included an annual $77,000 deferred compensation contribution. The School deposited the initial payment to a qualified 457(b) plan up to the annual IRS limit of $18,500. The remaining balance was deposited to a non-qualified 457(f) plan. Each deposit to the 457(f) plan is subject to a three-year vesting period and is distributed once the terms are satisfied.</ExplanationTxt>
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      <TaxExemptBondsIssuesGrp>
        <BondReferenceCd>A</BondReferenceCd>
        <IssuerName>
          <BusinessNameLine1Txt>Massachusetts Development Finance Agency</BusinessNameLine1Txt>
        </IssuerName>
        <BondIssuerEIN>043431814</BondIssuerEIN>
        <BondIssuedDt>2013-10-17</BondIssuedDt>
        <IssuePriceAmt>75000000</IssuePriceAmt>
        <PurposeDesc>Building renovations &amp; refinancing existing debt</PurposeDesc>
        <DefeasedInd>0</DefeasedInd>
        <OnBehalfOfIssuerInd>0</OnBehalfOfIssuerInd>
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      <TaxExemptBondsProceedsGrp>
        <BondReferenceCd>A</BondReferenceCd>
        <RetiredAmt>7362500</RetiredAmt>
        <BondDefeasedAmt>0</BondDefeasedAmt>
        <TotalProceedsAmt>75000000</TotalProceedsAmt>
        <InReserveFundAmt>0</InReserveFundAmt>
        <CapitalizedInterestAmt>644020</CapitalizedInterestAmt>
        <RefundingEscrowAmt>48640000</RefundingEscrowAmt>
        <IssuanceCostsFromProceedsAmt>474250</IssuanceCostsFromProceedsAmt>
        <CreditEnhancementAmt>0</CreditEnhancementAmt>
        <WorkingCapitalExpendituresAmt>0</WorkingCapitalExpendituresAmt>
        <CapitalExpendituresAmt>25885750</CapitalExpendituresAmt>
        <OtherSpentProceedsAmt>0</OtherSpentProceedsAmt>
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        <BondReferenceCd>A</BondReferenceCd>
        <OwningBondFinancedPropertyInd>0</OwningBondFinancedPropertyInd>
        <AnyLeaseArrangementsInd>1</AnyLeaseArrangementsInd>
        <MgmtContractBondFincdPropInd>0</MgmtContractBondFincdPropInd>
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        <ProcsNonqualifiedBondRemdtdInd>1</ProcsNonqualifiedBondRemdtdInd>
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        <BondReferenceCd>A</BondReferenceCd>
        <Form8038TFiledInd>0</Form8038TFiledInd>
        <RebateNotDueYetInd>0</RebateNotDueYetInd>
        <ExceptionToRebateInd>0</ExceptionToRebateInd>
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        <VariableRateIssueInd>1</VariableRateIssueInd>
        <HedgeIdentifiedInBksAndRecInd>1</HedgeIdentifiedInBksAndRecInd>
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          <BusinessNameLine1Txt>Morgan Stanley Capital Services</BusinessNameLine1Txt>
          <BusinessNameLine2Txt>Bank of New York Mellon</BusinessNameLine2Txt>
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        <TermOfHedgePct>30</TermOfHedgePct>
        <SuperintegratedHedgeInd>0</SuperintegratedHedgeInd>
        <HedgeTerminatedInd>0</HedgeTerminatedInd>
        <GrossProceedsInvestedInGICInd>0</GrossProceedsInvestedInGICInd>
        <GrossProceedsInvestedInd>0</GrossProceedsInvestedInd>
        <WrittenProcToMonitorReqsInd>1</WrittenProcToMonitorReqsInd>
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        <BondReferenceCd>A</BondReferenceCd>
        <ProceduresCorrectiveActionInd>1</ProceduresCorrectiveActionInd>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule K, Part IV, Line 4b-10/17/2013 75,000,000 Massachusetts Development Finance Agency</FormAndLineReferenceDesc>
        <ExplanationTxt>The Bank of New York Mellon Swap 20 year maturity, The Bank of New York Mellon Swap 38 year maturity, and Morgan Stanley Capital Services Swap 30 year maturity.</ExplanationTxt>
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    </IRS990ScheduleK>
    <IRS990ScheduleL documentId="R000011" softwareId="18007995" softwareVersionNum="v1.00">
      <BusTrInvolveInterestedPrsnGrp>
        <NameOfInterested>
          <PersonNm>Vuyelwa Maqubela</PersonNm>
        </NameOfInterested>
        <RelationshipDescriptionTxt>Family Member of Temba Maqubela</RelationshipDescriptionTxt>
        <TransactionAmt>145443</TransactionAmt>
        <TransactionDesc>Teacher and Adviser to Head of School</TransactionDesc>
        <SharingOfRevenuesInd>0</SharingOfRevenuesInd>
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    </IRS990ScheduleL>
    <IRS990ScheduleM documentId="R000012" softwareId="18007995" softwareVersionNum="v1.00">
      <SecuritiesPubliclyTradedGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <ContributionCnt>97</ContributionCnt>
        <NoncashContributionsRptF990Amt>1281760</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FMV</MethodOfDeterminingRevenuesTxt>
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      <Form8283ReceivedCnt>0</Form8283ReceivedCnt>
      <AnyPropertyThatMustBeHeldInd>0</AnyPropertyThatMustBeHeldInd>
      <ReviewProcessUnusualNCGiftsInd>1</ReviewProcessUnusualNCGiftsInd>
      <ThirdPartiesUsedInd>0</ThirdPartiesUsedInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule M, Part I, Line 33</FormAndLineReferenceDesc>
        <ExplanationTxt>The number of security contributions is based on the number of gifts and not the number of shares received.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleM>
    <IRS990ScheduleO documentId="R000013" softwareId="18007995" softwareVersionNum="v1.00">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, Line 11b</FormAndLineReferenceDesc>
        <ExplanationTxt>A draft of the Form 990 without Schedule B was distributed electronically to each member of the Audit Committee. After a thorough review, the Committee had an opportunity to ask questions and suggest revisions during a group conference call. The draft was also posted to a secure electronic portal, accessible by the full Board, prior to filing.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, Line 12c</FormAndLineReferenceDesc>
        <ExplanationTxt>All School officers, key employees, and members of the Board of Trustees are required annually to read the conflict of interest policy and sign the document. The signature indicates an understanding of the guidelines and an assurance to the Board that they are in compliance with the policy. Any potential conflict must be disclosed and reviewed by the President of the Board to determine if further action is required. Any identified conflict will prohibit such individual from participating in the governing body's deliberations and transaction decisions related to the conflict.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, Line 15</FormAndLineReferenceDesc>
        <ExplanationTxt>An employment contract between the Headmaster and the School is updated periodically and renewed annually. Each year, the President of the Board and the Compensation Committee review the Headmaster's and other senior administrator's salaries and benefits. The salary survey provided by the Association of Business Officers of Preparatory Schools is used as a guide and a point of comparison. The annual salary and benefit offerings for the Chief Financial Officer are made by the Headmaster. All salaries and benefit offerings for the remaining School employees are updated annually and approved by the Chief Financial Officer or the Headmaster up to the aggregate salary approved by the Board of Trustees.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section C, Line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>The Form 990 without Schedule B can be viewed on-line by going to guidestar.org, an independently operated website. The conflict of interest policy, governing documents, and financial statements may be viewed any time upon request for the same period of disclosure set forth in Section 6104(d).</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part XI, Line 9</FormAndLineReferenceDesc>
        <ExplanationTxt>Change in value of interest rate swap agreements (1,780,625), accrued pension liability (2,145,282), split interest agreements 435,174, and recovery of uncollectible pledges (460,581).</ExplanationTxt>
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    </IRS990ScheduleO>
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          <BusinessNameLine1Txt>Charitable Remainder Trust (5)</BusinessNameLine1Txt>
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          <AddressLine1Txt>PO Box 991</AddressLine1Txt>
          <CityNm>Groton</CityNm>
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          <ZIPCd>01450</ZIPCd>
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        <PrimaryActivitiesTxt>Charitable Trust</PrimaryActivitiesTxt>
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          <BusinessNameLine1Txt>Groton School</BusinessNameLine1Txt>
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          <CityNm>Groton</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>01450</ZIPCd>
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          <CityNm>Groton</CityNm>
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          <BusinessNameLine1Txt>Groton School</BusinessNameLine1Txt>
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      <GiftGrntCapContriFromOthOrgInd>0</GiftGrntCapContriFromOthOrgInd>
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      <AssetPurchaseFromOtherOrgInd>0</AssetPurchaseFromOtherOrgInd>
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      <RentalOfFcltsFromOthOrgInd>0</RentalOfFcltsFromOthOrgInd>
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        <InvolvedAmt>94773</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>The aggregate annual transfers from the fund to the School that represent the value of the fund assigned to the beneficiaries upon their death.</MethodOfAmountDeterminationTxt>
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        <MethodOfAmountDeterminationTxt>The aggregate annual transfers from the fund to the School that represent the value of the fund assigned to the beneficiaries upon their death.</MethodOfAmountDeterminationTxt>
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        <MethodOfAmountDeterminationTxt>The aggregate annual transfers from the fund to the School that represent the value of the fund assigned to the beneficiaries upon their death.</MethodOfAmountDeterminationTxt>
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