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        <PersonNm>MICHAEL H LOWRY</PersonNm>
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        <PersonNm>HARVINDER SANDHU MD</PersonNm>
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        <PersonNm>JUMAANE SAUNDERS</PersonNm>
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        <PersonNm>SARAH UNGER</PersonNm>
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        <PersonNm>PAMELA GALLIN YABLON MD</PersonNm>
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        <PersonNm>MAUREEN WRIGHT</PersonNm>
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        <PersonNm>MICHAEL WIRTZ</PersonNm>
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        <PersonNm>PETER MCANDREW</PersonNm>
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        <PersonNm>ANNE E BURNS</PersonNm>
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        <PersonNm>JOHN P GANNON</PersonNm>
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        <PersonNm>ANDREW M KING</PersonNm>
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        <PersonNm>STEVEN BILECA</PersonNm>
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        <PersonNm>CHRISTOPHER MCCOLL</PersonNm>
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        <PersonNm>ERICH TUSCH</PersonNm>
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          <USAddress>
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      <ContractorCompensationGrp>
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        <FormAndLineReferenceDesc>SCHEDULE D - PART II, QUESTION 9</FormAndLineReferenceDesc>
        <ExplanationTxt>CONSERVATION EASEMENT: THE LAND OWNED BY THE SCHOOL IS INCLUDED IN THE SCHOOL'S STATEMENT OF FINANCIAL POSITION. THERE IS NO REVENUE AND MINIMAL EXPENSE ASSOCIATED WITH THE CONSERVATION EASEMENT, AND ACCORDINGLY, THERE IS NO FOOTNOTE DISCLOSURE REGARDING THE EASEMENT.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE D - PART V, QUESTION 4</FormAndLineReferenceDesc>
        <ExplanationTxt>ENDOWMENT FUNDS: THE SCHOOL'S ENDOWMENT GENERATES A PREDICTABLE STREAM OF REVENUE THAT HELPS FUND ITS PROGRAMS, INCLUDING ITS FINANCIAL AID PROGRAM.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE D - PART X, QUESTION 2</FormAndLineReferenceDesc>
        <ExplanationTxt>ASC 740 - INCOME TAXES: The School is subject to the provisions of the Financial Accounting Standards Board's ("FASB") ACCOUNTING STANDARDS CODIFICATION ("ASC") Topic 740, "Income Taxes", AS IT RELATES to accounting and reporting for uncertainty in income taxes. The School is subject to and pays unrelated business income tax relating to its rental activities; BECAUSE the School has always RECOGNIZED the liability related to this unrelated business income and because of the School's general tax-exempt status, management believes ASC Topic 740 has not had, and is not expected to have, a material impact on the School's financial statements.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE D - PART XI, QUESTION 2D</FormAndLineReferenceDesc>
        <ExplanationTxt>RECONCILIATION OF REVENUE PER AUDITED FINANCIAL STATEMENTS WITH REVENUE PER RETURN: REPORTED AS REVENUE WITHIN THE FORM 990, WHILE REPORTED AS EXPENSES WITHIN THE FINANCIAL STATEMENTS: COSTS OF GOODS SOLD ($22,184) Rental expenseS ($200,702) _________ Total ($222,886) =========</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE D - PART XI, QUESTION 4B</FormAndLineReferenceDesc>
        <ExplanationTxt>RECONCILIATION OF REVENUE PER AUDITED FINANCIAL STATEMENTS WITH REVENUE PER RETURN: INCLUDED IN REVENUE ON THE FINANCIAL STATEMENTS BUT NOT NETTED WITH REVENUE ON FORM 990: FINANCIAL AID OF $6,874,663</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE D - PART XII, QUESTION 2D</FormAndLineReferenceDesc>
        <ExplanationTxt>RECONCILIATION OF EXPENSES PER AUDITED FINANCIAL STATEMENTS WITH EXPENSES PER RETURN: REPORTED AS EXPENSE WITHIN THE FORM 990, WHILE NETTED WITH REVENUE WITHIN THE FINANCIAL STATEMENTS: COSTS OF GOODS SOLD $22,184 Rental expenseS $200,702 LOSS ON UNCOLLECTIBLE ACCOUNTS $6,807 _________ Total $229,693 =========</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE D - PART XII, QUESTION 4B</FormAndLineReferenceDesc>
        <ExplanationTxt>RECONCILIATION OF EXPENSES PER AUDITED FINANCIAL STATEMENTS WITH EXPENSES PER RETURN: EXPENSES INCLUDED ON FORM 990 BUT NOT REFLECTED AS EXPENSES WITHIN THE FINANCIAL STATEMENTS: FINANCIAL AID OF $6,874,663</ExplanationTxt>
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        <DeferredCompensationFlngOrgAmt>27500</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>23677</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>624940</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>162227</CompReportPrior990FilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>ANNE E BURNS</PersonNm>
        <TitleTxt>DIRECTOR OF LOWER SCHOOL</TitleTxt>
        <BaseCompensationFilingOrgAmt>236021</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <DeferredCompensationFlngOrgAmt>24222</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>23677</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>283920</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>PHILIP J VARIANO</PersonNm>
        <TitleTxt>ASSOCIATE HEADMASTER</TitleTxt>
        <BaseCompensationFilingOrgAmt>215371</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <DeferredCompensationFlngOrgAmt>21388</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>25561</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>262320</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>JOHN P GANNON</PersonNm>
        <TitleTxt>DIRECTOR OF DEVELOPMENT</TitleTxt>
        <BaseCompensationFilingOrgAmt>195669</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <DeferredCompensationFlngOrgAmt>20463</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>23678</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>239810</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>ANDREW M KING</PersonNm>
        <TitleTxt>DIRECTOR OF UPPER SCHOOL</TitleTxt>
        <BaseCompensationFilingOrgAmt>171400</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <DeferredCompensationFlngOrgAmt>17660</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>25561</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>214621</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>STEVEN BILECA</PersonNm>
        <TitleTxt>ASSISTANT HEADMASTER</TitleTxt>
        <BaseCompensationFilingOrgAmt>157409</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <DeferredCompensationFlngOrgAmt>12457</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>22551</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>192417</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>CHRISTOPHER MCCOLL</PersonNm>
        <TitleTxt>DIRECTOR OF ADMISSIONS</TitleTxt>
        <BaseCompensationFilingOrgAmt>151098</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <DeferredCompensationFlngOrgAmt>15746</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>25561</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>192405</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE J - LINES 1A, 1B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE HEAD OF SCHOOL IS REQUIRED TO LIVE ON CAMPUS, AS BOARDING STUDENTS RESIDE AT THE SCHOOL. SINCE THE HEAD OF SCHOOL'S HOME SERVES AS HIS PERMANENT RESIDENCE, PERSONAL USE OF THE HOME DOES OCCUR. THE SCHOOL PAYS FOR A CLEANING SERVICE FOR THE HOME, AS NEEDED. THE HOUSING REQUIREMENT PROVISION IS CONTAINED IN THE EMPLOYMENT CONTRACT OF THE HEAD OF SCHOOL. DURING THE CURRENT REPORTING PERIOD, THE SCHOOL DID NOT PROVIDE ANY FUNDS FOR COMPANION TRAVEL.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule J - Line 4b</FormAndLineReferenceDesc>
        <ExplanationTxt>The School contributes to A supplemental nonqualified retirement plan for thE director of finance AND CAMPUS PLANNING. DURING CALENDAR 2018, THE INDIVIDUAL TOOK A FULL DISTRIBUTION FROM THE PLAN AS REFLECTED IN COLUMN B(III).</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleJ>
    <IRS990ScheduleK documentId="IRS990ScheduleK">
      <TaxExemptBondsIssuesGrp>
        <BondReferenceCd>A</BondReferenceCd>
        <IssuerName>
          <BusinessNameLine1Txt>COUNTY OF WESTCHESTER INDUSTRIAL DEVELOP AGENCY</BusinessNameLine1Txt>
        </IssuerName>
        <BondIssuerEIN>521294265</BondIssuerEIN>
        <CUSIPNum>957368FMO</CUSIPNum>
        <BondIssuedDt>2004-01-02</BondIssuedDt>
        <IssuePriceAmt>16000000</IssuePriceAmt>
        <PurposeDesc>FINANCING RENOVATIONS</PurposeDesc>
        <DefeasedInd>false</DefeasedInd>
        <OnBehalfOfIssuerInd>false</OnBehalfOfIssuerInd>
        <PoolFinancingInd>false</PoolFinancingInd>
      </TaxExemptBondsIssuesGrp>
      <TaxExemptBondsProceedsGrp>
        <BondReferenceCd>A</BondReferenceCd>
        <RetiredAmt>12830000</RetiredAmt>
        <BondDefeasedAmt>0</BondDefeasedAmt>
        <TotalProceedsAmt>16000000</TotalProceedsAmt>
        <InReserveFundAmt>0</InReserveFundAmt>
        <CapitalizedInterestAmt>0</CapitalizedInterestAmt>
        <RefundingEscrowAmt>0</RefundingEscrowAmt>
        <IssuanceCostsFromProceedsAmt>714662</IssuanceCostsFromProceedsAmt>
        <CreditEnhancementAmt>274337</CreditEnhancementAmt>
        <WorkingCapitalExpendituresAmt>0</WorkingCapitalExpendituresAmt>
        <CapitalExpendituresAmt>15285739</CapitalExpendituresAmt>
        <OtherSpentProceedsAmt>0</OtherSpentProceedsAmt>
        <UnspentAmt>0</UnspentAmt>
        <RefundingTaxExemptBondsInd>false</RefundingTaxExemptBondsInd>
        <RefundingTaxableBondsInd>false</RefundingTaxableBondsInd>
        <FinalAllocationMadeInd>true</FinalAllocationMadeInd>
        <AdequateBooksAndRecMaintInd>true</AdequateBooksAndRecMaintInd>
      </TaxExemptBondsProceedsGrp>
      <TaxExemptBondsPrivateBusUseGrp>
        <BondReferenceCd>A</BondReferenceCd>
        <OwningBondFinancedPropertyInd>false</OwningBondFinancedPropertyInd>
        <AnyLeaseArrangementsInd>false</AnyLeaseArrangementsInd>
        <MgmtContractBondFincdPropInd>false</MgmtContractBondFincdPropInd>
        <AnyResearchAgreementsInd>false</AnyResearchAgreementsInd>
        <PrivateBusUseByOthersPct>0</PrivateBusUseByOthersPct>
        <BondIssMeetPrvtSecPymtTestInd>false</BondIssMeetPrvtSecPymtTestInd>
        <ChangeInUseBondFinancedPropInd>false</ChangeInUseBondFinancedPropInd>
        <RemedialActionTakenInd>false</RemedialActionTakenInd>
        <ProcsNonqualifiedBondRemdtdInd>true</ProcsNonqualifiedBondRemdtdInd>
      </TaxExemptBondsPrivateBusUseGrp>
      <TaxExemptBondsArbitrageGrp>
        <BondReferenceCd>A</BondReferenceCd>
        <Form8038TFiledInd>false</Form8038TFiledInd>
        <RebateNotDueYetInd>false</RebateNotDueYetInd>
        <ExceptionToRebateInd>false</ExceptionToRebateInd>
        <NoRebateDueInd>true</NoRebateDueInd>
        <VariableRateIssueInd>true</VariableRateIssueInd>
        <HedgeIdentifiedInBksAndRecInd>false</HedgeIdentifiedInBksAndRecInd>
        <HedgeProviderName>
          <BusinessNameLine1Txt>0</BusinessNameLine1Txt>
        </HedgeProviderName>
        <GrossProceedsInvestedInGICInd>false</GrossProceedsInvestedInGICInd>
        <GICProviderName>
          <BusinessNameLine1Txt>0</BusinessNameLine1Txt>
        </GICProviderName>
        <GrossProceedsInvestedInd>false</GrossProceedsInvestedInd>
        <WrittenProcToMonitorReqsInd>false</WrittenProcToMonitorReqsInd>
      </TaxExemptBondsArbitrageGrp>
      <ProceduresCorrectiveActionGrp>
        <BondReferenceCd>A</BondReferenceCd>
      </ProceduresCorrectiveActionGrp>
    </IRS990ScheduleK>
    <IRS990ScheduleM documentId="IRS990ScheduleM">
      <WorksOfArtGrp />
      <ArtHistoricalTreasuresGrp />
      <ArtFractionalInterestGrp />
      <BooksAndPublicationsGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <NoncashContributionsRptF990Amt>75</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FMV</MethodOfDeterminingRevenuesTxt>
      </BooksAndPublicationsGrp>
      <ClothingAndHouseholdGoodsGrp />
      <CarsAndOtherVehiclesGrp />
      <BoatsAndPlanesGrp />
      <IntellectualPropertyGrp />
      <SecuritiesPubliclyTradedGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <ContributionCnt>43</ContributionCnt>
        <NoncashContributionsRptF990Amt>20776362</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FMV</MethodOfDeterminingRevenuesTxt>
      </SecuritiesPubliclyTradedGrp>
      <SecuritiesCloselyHeldStockGrp />
      <SecurPrtnrshpTrustIntrstsGrp />
      <SecuritiesMiscellaneousGrp />
      <QualifiedContribHistStructGrp />
      <QualifiedContribOtherGrp />
      <RealEstateResidentialGrp />
      <RealEstateCommercialGrp />
      <RealEstateOtherGrp />
      <CollectiblesGrp />
      <FoodInventoryGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <ContributionCnt>2</ContributionCnt>
        <NoncashContributionsRptF990Amt>2172</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FMV</MethodOfDeterminingRevenuesTxt>
      </FoodInventoryGrp>
      <DrugsAndMedicalSuppliesGrp />
      <TaxidermyGrp />
      <HistoricalArtifactsGrp />
      <ScientificSpecimensGrp />
      <ArchaeologicalArtifactsGrp />
      <OtherNonCashContriTableGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <Desc>TICKETS SPORTING &amp; OTHER</Desc>
        <ContributionCnt>4</ContributionCnt>
        <NoncashContributionsRptF990Amt>13582</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FMV</MethodOfDeterminingRevenuesTxt>
      </OtherNonCashContriTableGrp>
      <OtherNonCashContriTableGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <Desc>MUSICAL INSTRUMENTS</Desc>
        <ContributionCnt>3</ContributionCnt>
        <NoncashContributionsRptF990Amt>7930</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FMV</MethodOfDeterminingRevenuesTxt>
      </OtherNonCashContriTableGrp>
      <OtherNonCashContriTableGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <Desc>COMPUTER</Desc>
        <ContributionCnt>1</ContributionCnt>
        <NoncashContributionsRptF990Amt>338</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FMV</MethodOfDeterminingRevenuesTxt>
      </OtherNonCashContriTableGrp>
      <OtherNonCashContriTableGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <Desc>TENT</Desc>
        <ContributionCnt>1</ContributionCnt>
        <NoncashContributionsRptF990Amt>140</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FMV</MethodOfDeterminingRevenuesTxt>
      </OtherNonCashContriTableGrp>
      <AnyPropertyThatMustBeHeldInd>false</AnyPropertyThatMustBeHeldInd>
      <ReviewProcessUnusualNCGiftsInd>true</ReviewProcessUnusualNCGiftsInd>
      <ThirdPartiesUsedInd>true</ThirdPartiesUsedInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE M - PART I, LINE 32B</FormAndLineReferenceDesc>
        <ExplanationTxt>The School uses TD Ameritrade to sell donated securities.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleM>
    <IRS990ScheduleO documentId="IRS990ScheduleO">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990 - PART VI, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>FORM 990 REVIEW PROCESS: THE FORM 990 IS REVIEWED BY THE AUDIT COMMITTEE OF THE BOARD AND THEN PRESENTED TO THE FULL BOARD OF TRUSTEES FOR REVIEW AND APPROVAL, WITH COPIES BEING DISTRIBUTED IN ADVANCE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990 - PART VI, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>Conflict-of-Interest Policy: The conflict-of-interest policy is distributed annually along with a declaration form to key personnel and administrators, as well as all trustees. The business office collects all declaration forms and prepares a memo of all known conflicts for the Chair of the Audit Committee, the Head OF SCHOOL, and the President of the Board OF TRUSTEES to review.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990 - PART VI, LINES 15A AND 15B</FormAndLineReferenceDesc>
        <ExplanationTxt>Determining compensation: The Head OF SCHOOL sets compensation pools for all employees. Compensation is based on comparable data obtained from peer institutions and an association of independent schools. The Head OF SCHOOL'S compensation is determined by the board of trustees' executive committee. An assessment of performance along with comparable data provided FROM peer schools are used to determine this compensation. The head OF SCHOOL and Director of Finance AND CAMPUS PLANNING have written employment AGREEMENTS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FOMR 990 - PART VI, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>GOVERNING DOCUMENTS: THE School'S GOVERNING DOCUMENTS, CONFLICT-OF-INTEREST POLICY AND FINANCIAL STATEMENTS ARE AVAILABLE TO THE PUBLIC UPON REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990 - PART XI, LINE 9</FormAndLineReferenceDesc>
        <ExplanationTxt>RECONCILIATION OF NET ASSETS - OTHER CHANGES IN NET ASSETS CONSIST OF: Change in Post Retirement Benefits OTHER THAN PERIODIC COSTS ($549,233) LOSS ON UNCOLLECTIBLE ACCOUNTS ($6,807) ________ TOTAL ($566,040) ========</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990 - PART X, LINES 27, 28, AND 29</FormAndLineReferenceDesc>
        <ExplanationTxt>THE SCHOOL IS SUBJECT TO THE FINANCIAL ACCOUNTING STANDARDS BOARD'S ("FASB") ACCOUNTING STANDARDS UPDATE ("asu") NO.2016-14, PRESENTATION OF FINANCIAL STATEMENTS OF NOT-FOR-PROFIT ENTITIES. ASU 2016-14 AMENDS THE FINANCIAL STATEMENT PRESENTATION OF THE NET ASSET CLASSIFICATION FROM THE PREVIOUS CATEGORIES OF "UNRESTRICTED", "TEMPORARILY RESTRICTED", AND "PERMANENTLY RESTRICTED" TO THE NEW CATEGORIES OF "WITHOUT DONOR RESTRICTIONS"WITH DONOR RESTRICTIONS". AS A RESULT, THE SCHOOL'S JUNE 30, 2019 FINANCIAL STATEMENTS REFLECT ASU 2016-14'S PRESENTATION OF THE NET ASSET CLASSIFICATIONS AS "WITHOUT DONOR RESTRICTIONS"WITH DONOR RESTRICTIONS". AS NOTED BY THE IRS IN THE INSTRUCTIONS TO THE FORM 990, PART X OF THE FORM WILL CONTINUE TO UTILIZE THE PREVIOUS CLASSIFICATION, AND THE IRS ACKNOWLEDGES THAT THOSE WHO HAVE ADOPTED ASU 2016-14 WILL HAVE A DIFFERENT STRUCTURE WITHIN THEIR AUDITED FINANCIAL STATEMENTS.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
    <IRS990ScheduleR documentId="IRS990ScheduleR">
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>HACKLEY ALUMNI ENDOWMENT FUND</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>293 BENEDICT AVENUE</AddressLine1Txt>
          <CityNm>TARRYTOWN</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10591</ZIPCd>
        </USAddress>
        <EIN>136068876</EIN>
        <PrimaryActivitiesTxt>CHARITABLE</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>NY</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>12A; TYPE I</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>NA</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <ReceiptOfIntAnntsRntsRyltsInd>false</ReceiptOfIntAnntsRntsRyltsInd>
      <GiftGrntOrCapContriToOthOrgInd>false</GiftGrntOrCapContriToOthOrgInd>
      <GiftGrntCapContriFromOthOrgInd>true</GiftGrntCapContriFromOthOrgInd>
      <LoansOrGuaranteesToOtherOrgInd>false</LoansOrGuaranteesToOtherOrgInd>
      <LoansOrGuaranteesFromOthOrgInd>false</LoansOrGuaranteesFromOthOrgInd>
      <AssetSaleToOtherOrgInd>false</AssetSaleToOtherOrgInd>
      <AssetPurchaseFromOtherOrgInd>false</AssetPurchaseFromOtherOrgInd>
      <AssetExchangeInd>false</AssetExchangeInd>
      <RentalOfFacilitiesToOthOrgInd>false</RentalOfFacilitiesToOthOrgInd>
      <RentalOfFcltsFromOthOrgInd>false</RentalOfFcltsFromOthOrgInd>
      <PerformOfServicesForOthOrgInd>false</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>false</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>true</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>false</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>false</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>false</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>false</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>false</TransferFromOtherOrgInd>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>HACKLEY ALUMNI ENDOWMENT FUND</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>C</TransactionTypeTxt>
        <InvolvedAmt>105654</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>FMV</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
    </IRS990ScheduleR>
  </ReturnData>
</Return>