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        <ReportableCompFromOrgAmt>176134</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>36328</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>KRISTA MACARI</PersonNm>
        <TitleTxt>CAO</TitleTxt>
        <AverageHoursPerWeekRt>45.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>166318</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>24819</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>ELIZABETH PETERS</PersonNm>
        <TitleTxt>DIRECTOR OF ANNUAL GIVING</TitleTxt>
        <AverageHoursPerWeekRt>45.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>138080</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>16536</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>VIRGINA BIRMINGHAM</PersonNm>
        <TitleTxt>PHYISICAL THERAPIST</TitleTxt>
        <AverageHoursPerWeekRt>45.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>119259</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>22339</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>LEAH THIBODEAU</PersonNm>
        <TitleTxt>SPECIAL EDUCATION COORDINA</TitleTxt>
        <AverageHoursPerWeekRt>45.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>119176</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>27506</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <TotalReportableCompFromOrgAmt>1254154</TotalReportableCompFromOrgAmt>
      <TotReportableCompRltdOrgAmt>0</TotReportableCompRltdOrgAmt>
      <TotalOtherCompensationAmt>187056</TotalOtherCompensationAmt>
      <IndivRcvdGreaterThan100KCnt>8</IndivRcvdGreaterThan100KCnt>
      <FormerOfcrEmployeesListedInd>0</FormerOfcrEmployeesListedInd>
      <TotalCompGreaterThan150KInd>1</TotalCompGreaterThan150KInd>
      <CompensationFromOtherSrcsInd>0</CompensationFromOtherSrcsInd>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>ERLAND CONSTRUCTION INC</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>71 THIRD AVENUE</AddressLine1Txt>
            <CityNm>BURLINGTON</CityNm>
            <StateAbbreviationCd>MA</StateAbbreviationCd>
            <ZIPCd>01803</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>CONSTRUCTION CONTRACTOR</ServicesDesc>
        <CompensationAmt>3472350</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>ARCHITECTURAL RESOURCES CAMBRIDGE</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>501 BOYLSTON STREET 4101</AddressLine1Txt>
            <CityNm>BOSTON</CityNm>
            <StateAbbreviationCd>MA</StateAbbreviationCd>
            <ZIPCd>02116</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>DESIGN CONSULTANT</ServicesDesc>
        <CompensationAmt>310861</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>ACTIVITAS INC</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>93 RICHARDS STREET SUITE 3</AddressLine1Txt>
            <CityNm>DEDHAM</CityNm>
            <StateAbbreviationCd>MA</StateAbbreviationCd>
            <ZIPCd>02026</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>LANDSCAPE ARCHITECT</ServicesDesc>
        <CompensationAmt>168820</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>LEONARD MULHERIN &amp; GREENE PC</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>625 GROVE STREET</AddressLine1Txt>
            <CityNm>BRAINTREE</CityNm>
            <StateAbbreviationCd>MA</StateAbbreviationCd>
            <ZIPCd>02184</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>AUDIT/CONSULTING</ServicesDesc>
        <CompensationAmt>132090</CompensationAmt>
      </ContractorCompensationGrp>
      <CntrctRcvdGreaterThan100KCnt>4</CntrctRcvdGreaterThan100KCnt>
      <GovernmentGrantsAmt>244738</GovernmentGrantsAmt>
      <AllOtherContributionsAmt>2155997</AllOtherContributionsAmt>
      <TotalContributionsAmt>2400735</TotalContributionsAmt>
      <ProgramServiceRevenueGrp>
        <Desc>TUITION</Desc>
        <BusinessCd>611710</BusinessCd>
        <TotalRevenueColumnAmt>11398052</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>11398052</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <TotalProgramServiceRevenueAmt>11398052</TotalProgramServiceRevenueAmt>
      <InvestmentIncomeGrp>
        <TotalRevenueColumnAmt>1307806</TotalRevenueColumnAmt>
        <ExclusionAmt>1307806</ExclusionAmt>
      </InvestmentIncomeGrp>
      <GrossAmountSalesAssetsGrp>
        <SecuritiesAmt>38507170</SecuritiesAmt>
      </GrossAmountSalesAssetsGrp>
      <LessCostOthBasisSalesExpnssGrp>
        <SecuritiesAmt>36609242</SecuritiesAmt>
      </LessCostOthBasisSalesExpnssGrp>
      <GainOrLossGrp>
        <SecuritiesAmt>1897928</SecuritiesAmt>
      </GainOrLossGrp>
      <NetGainOrLossInvestmentsGrp>
        <TotalRevenueColumnAmt>1897928</TotalRevenueColumnAmt>
        <ExclusionAmt>1897928</ExclusionAmt>
      </NetGainOrLossInvestmentsGrp>
      <OtherRevenueMiscGrp>
        <Desc>OTHER INCOME</Desc>
        <BusinessCd>611710</BusinessCd>
        <TotalRevenueColumnAmt>297658</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>297658</RelatedOrExemptFuncIncomeAmt>
      </OtherRevenueMiscGrp>
      <OtherRevenueTotalAmt>297658</OtherRevenueTotalAmt>
      <TotalRevenueGrp>
        <TotalRevenueColumnAmt>17302179</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>11695710</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>3205734</ExclusionAmt>
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      <CompCurrentOfcrDirectorsGrp>
        <TotalAmt>710867</TotalAmt>
        <ManagementAndGeneralAmt>667810</ManagementAndGeneralAmt>
        <FundraisingAmt>43057</FundraisingAmt>
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      <OtherSalariesAndWagesGrp>
        <TotalAmt>8402713</TotalAmt>
        <ProgramServicesAmt>7224829</ProgramServicesAmt>
        <ManagementAndGeneralAmt>895835</ManagementAndGeneralAmt>
        <FundraisingAmt>282049</FundraisingAmt>
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      <PensionPlanContributionsGrp>
        <TotalAmt>559874</TotalAmt>
        <ProgramServicesAmt>491962</ProgramServicesAmt>
        <ManagementAndGeneralAmt>56177</ManagementAndGeneralAmt>
        <FundraisingAmt>11735</FundraisingAmt>
      </PensionPlanContributionsGrp>
      <OtherEmployeeBenefitsGrp>
        <TotalAmt>1378047</TotalAmt>
        <ProgramServicesAmt>1223214</ProgramServicesAmt>
        <ManagementAndGeneralAmt>139202</ManagementAndGeneralAmt>
        <FundraisingAmt>15631</FundraisingAmt>
      </OtherEmployeeBenefitsGrp>
      <PayrollTaxesGrp>
        <TotalAmt>778834</TotalAmt>
        <ProgramServicesAmt>647551</ProgramServicesAmt>
        <ManagementAndGeneralAmt>101267</ManagementAndGeneralAmt>
        <FundraisingAmt>30016</FundraisingAmt>
      </PayrollTaxesGrp>
      <FeesForServicesLegalGrp>
        <TotalAmt>11138</TotalAmt>
        <ManagementAndGeneralAmt>11138</ManagementAndGeneralAmt>
      </FeesForServicesLegalGrp>
      <FeesForServicesAccountingGrp>
        <TotalAmt>50975</TotalAmt>
        <ManagementAndGeneralAmt>50975</ManagementAndGeneralAmt>
      </FeesForServicesAccountingGrp>
      <FeesForServicesOtherGrp>
        <TotalAmt>270949</TotalAmt>
        <ProgramServicesAmt>180512</ProgramServicesAmt>
        <ManagementAndGeneralAmt>17681</ManagementAndGeneralAmt>
        <FundraisingAmt>72756</FundraisingAmt>
      </FeesForServicesOtherGrp>
      <OccupancyGrp>
        <TotalAmt>983908</TotalAmt>
        <ProgramServicesAmt>872480</ProgramServicesAmt>
        <ManagementAndGeneralAmt>89818</ManagementAndGeneralAmt>
        <FundraisingAmt>21610</FundraisingAmt>
      </OccupancyGrp>
      <TravelGrp>
        <TotalAmt>45626</TotalAmt>
        <ProgramServicesAmt>42809</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1891</ManagementAndGeneralAmt>
        <FundraisingAmt>926</FundraisingAmt>
      </TravelGrp>
      <DepreciationDepletionGrp>
        <TotalAmt>471383</TotalAmt>
        <ProgramServicesAmt>429968</ProgramServicesAmt>
        <ManagementAndGeneralAmt>34101</ManagementAndGeneralAmt>
        <FundraisingAmt>7314</FundraisingAmt>
      </DepreciationDepletionGrp>
      <InsuranceGrp>
        <TotalAmt>39168</TotalAmt>
        <ManagementAndGeneralAmt>39168</ManagementAndGeneralAmt>
      </InsuranceGrp>
      <OtherExpensesGrp>
        <Desc>MISC. PROG./ADMIN EXP.</Desc>
        <TotalAmt>317224</TotalAmt>
        <ProgramServicesAmt>33310</ProgramServicesAmt>
        <ManagementAndGeneralAmt>278320</ManagementAndGeneralAmt>
        <FundraisingAmt>5594</FundraisingAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>PROGRAM SUPPORT</Desc>
        <TotalAmt>146083</TotalAmt>
        <ProgramServicesAmt>75353</ProgramServicesAmt>
        <FundraisingAmt>70730</FundraisingAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>PROG. SUPPLIES AND MAT.</Desc>
        <TotalAmt>63508</TotalAmt>
        <ProgramServicesAmt>63508</ProgramServicesAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>MEALS</Desc>
        <TotalAmt>42125</TotalAmt>
        <ProgramServicesAmt>40854</ProgramServicesAmt>
        <ManagementAndGeneralAmt>977</ManagementAndGeneralAmt>
        <FundraisingAmt>294</FundraisingAmt>
      </OtherExpensesGrp>
      <TotalFunctionalExpensesGrp>
        <TotalAmt>14272422</TotalAmt>
        <ProgramServicesAmt>11326350</ProgramServicesAmt>
        <ManagementAndGeneralAmt>2384360</ManagementAndGeneralAmt>
        <FundraisingAmt>561712</FundraisingAmt>
      </TotalFunctionalExpensesGrp>
      <JointCostsInd>X</JointCostsInd>
      <CashNonInterestBearingGrp>
        <BOYAmt>3262835</BOYAmt>
        <EOYAmt>1935593</EOYAmt>
      </CashNonInterestBearingGrp>
      <SavingsAndTempCashInvstGrp>
        <BOYAmt>34063</BOYAmt>
        <EOYAmt>77217</EOYAmt>
      </SavingsAndTempCashInvstGrp>
      <PledgesAndGrantsReceivableGrp>
        <BOYAmt>1040551</BOYAmt>
        <EOYAmt>1048001</EOYAmt>
      </PledgesAndGrantsReceivableGrp>
      <AccountsReceivableGrp>
        <BOYAmt>943800</BOYAmt>
        <EOYAmt>626023</EOYAmt>
      </AccountsReceivableGrp>
      <PrepaidExpensesDefrdChargesGrp>
        <BOYAmt>43570</BOYAmt>
        <EOYAmt>58600</EOYAmt>
      </PrepaidExpensesDefrdChargesGrp>
      <LandBldgEquipCostOrOtherBssAmt>31753117</LandBldgEquipCostOrOtherBssAmt>
      <LandBldgEquipAccumDeprecAmt>14503417</LandBldgEquipAccumDeprecAmt>
      <LandBldgEquipBasisNetGrp>
        <BOYAmt>7297474</BOYAmt>
        <EOYAmt>17249700</EOYAmt>
      </LandBldgEquipBasisNetGrp>
      <InvestmentsPubTradedSecGrp>
        <BOYAmt>88153802</BOYAmt>
        <EOYAmt>103144027</EOYAmt>
      </InvestmentsPubTradedSecGrp>
      <InvestmentsOtherSecuritiesGrp>
        <BOYAmt>5748726</BOYAmt>
        <EOYAmt>10193312</EOYAmt>
      </InvestmentsOtherSecuritiesGrp>
      <OtherAssetsTotalGrp>
        <BOYAmt>3352712</BOYAmt>
        <EOYAmt>13614560</EOYAmt>
      </OtherAssetsTotalGrp>
      <TotalAssetsGrp>
        <BOYAmt>109877533</BOYAmt>
        <EOYAmt>147947033</EOYAmt>
      </TotalAssetsGrp>
      <AccountsPayableAccrExpnssGrp>
        <BOYAmt>1521409</BOYAmt>
        <EOYAmt>2184630</EOYAmt>
      </AccountsPayableAccrExpnssGrp>
      <DeferredRevenueGrp>
        <EOYAmt>61972</EOYAmt>
      </DeferredRevenueGrp>
      <UnsecuredNotesLoansPayableGrp>
        <EOYAmt>9940774</EOYAmt>
      </UnsecuredNotesLoansPayableGrp>
      <OtherLiabilitiesGrp>
        <BOYAmt>4555728</BOYAmt>
        <EOYAmt>4491750</EOYAmt>
      </OtherLiabilitiesGrp>
      <TotalLiabilitiesGrp>
        <BOYAmt>6077137</BOYAmt>
        <EOYAmt>16679126</EOYAmt>
      </TotalLiabilitiesGrp>
      <OrganizationFollowsFASB117Ind>X</OrganizationFollowsFASB117Ind>
      <NoDonorRestrictionNetAssetsGrp>
        <BOYAmt>79239346</BOYAmt>
        <EOYAmt>101808925</EOYAmt>
      </NoDonorRestrictionNetAssetsGrp>
      <DonorRestrictionNetAssetsGrp>
        <BOYAmt>24561050</BOYAmt>
        <EOYAmt>29458982</EOYAmt>
      </DonorRestrictionNetAssetsGrp>
      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>103800396</BOYAmt>
        <EOYAmt>131267907</EOYAmt>
      </TotalNetAssetsFundBalanceGrp>
      <TotLiabNetAssetsFundBalanceGrp>
        <BOYAmt>109877533</BOYAmt>
        <EOYAmt>147947033</EOYAmt>
      </TotLiabNetAssetsFundBalanceGrp>
      <InfoInScheduleOPartXIInd>X</InfoInScheduleOPartXIInd>
      <ReconcilationRevenueExpnssAmt>3029757</ReconcilationRevenueExpnssAmt>
      <NetUnrlzdGainsLossesInvstAmt>24270427</NetUnrlzdGainsLossesInvstAmt>
      <DonatedServicesAndUseFcltsAmt>83552</DonatedServicesAndUseFcltsAmt>
      <OtherChangesInNetAssetsAmt>83775</OtherChangesInNetAssetsAmt>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>0</AccountantCompileOrReviewInd>
      <FSAuditedInd>1</FSAuditedInd>
      <FSAuditedBasisGrp>
        <SeparateBasisFinclStmtInd>X</SeparateBasisFinclStmtInd>
      </FSAuditedBasisGrp>
      <AuditCommitteeInd>1</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>0</FederalGrantAuditRequiredInd>
    </IRS990>
    <IRS990ScheduleA documentId="RetDoc1039100001">
      <SchoolInd>X</SchoolInd>
    </IRS990ScheduleA>
    <IRS990ScheduleB documentId="RetDoc1234500001">
      <ContributorInformationGrp>
        <ContributorNum>RESTRICTED</ContributorNum>
        <ContributorBusinessName>
          <BusinessNameLine1>RESTRICTED</BusinessNameLine1>
        </ContributorBusinessName>
        <ContributorUSAddress>
          <AddressLine1>RESTRICTED</AddressLine1>
          <AddressLine2>RESTRICTED</AddressLine2>
          <City>RESTRICTED</City>
          <State>RESTRICTED</State>
          <ZIPCode>RESTRICTED</ZIPCode>
        </ContributorUSAddress>
        <TotalContributionsAmt>RESTRICTED</TotalContributionsAmt>
      </ContributorInformationGrp>
    </IRS990ScheduleB>
    <IRS990ScheduleD documentId="RetDoc1039900001">
      <PreservationOpenSpaceInd>X</PreservationOpenSpaceInd>
      <TotalEasementsCnt>15</TotalEasementsCnt>
      <TotalAcreageCnt>4.00</TotalAcreageCnt>
      <StatesEasementsHeldCnt>1</StatesEasementsHeldCnt>
      <WrittenPolicyMonitoringInd>0</WrittenPolicyMonitoringInd>
      <StaffHoursSpentEnforcementCnt>2.00</StaffHoursSpentEnforcementCnt>
      <CYEndwmtFundGrp>
        <BeginningYearBalanceAmt>88614332</BeginningYearBalanceAmt>
        <InvestmentEarningsOrLossesAmt>26726029</InvestmentEarningsOrLossesAmt>
        <OtherExpendituresAmt>-4500000</OtherExpendituresAmt>
        <EndYearBalanceAmt>110840361</EndYearBalanceAmt>
      </CYEndwmtFundGrp>
      <CYMinus1YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>94176343</BeginningYearBalanceAmt>
        <InvestmentEarningsOrLossesAmt>-1662011</InvestmentEarningsOrLossesAmt>
        <OtherExpendituresAmt>-3900000</OtherExpendituresAmt>
        <EndYearBalanceAmt>88614332</EndYearBalanceAmt>
      </CYMinus1YrEndwmtFundGrp>
      <CYMinus2YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>94439740</BeginningYearBalanceAmt>
        <ContributionsAmt>4000</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>4835209</InvestmentEarningsOrLossesAmt>
        <OtherExpendituresAmt>-5102606</OtherExpendituresAmt>
        <EndYearBalanceAmt>94176343</EndYearBalanceAmt>
      </CYMinus2YrEndwmtFundGrp>
      <CYMinus3YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>89832975</BeginningYearBalanceAmt>
        <InvestmentEarningsOrLossesAmt>7256765</InvestmentEarningsOrLossesAmt>
        <OtherExpendituresAmt>-2650000</OtherExpendituresAmt>
        <EndYearBalanceAmt>94439740</EndYearBalanceAmt>
      </CYMinus3YrEndwmtFundGrp>
      <CYMinus4YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>81360129</BeginningYearBalanceAmt>
        <ContributionsAmt>25537</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>10497309</InvestmentEarningsOrLossesAmt>
        <OtherExpendituresAmt>-2050000</OtherExpendituresAmt>
        <EndYearBalanceAmt>89832975</EndYearBalanceAmt>
      </CYMinus4YrEndwmtFundGrp>
      <BoardDesignatedBalanceEOYPct>0.87710</BoardDesignatedBalanceEOYPct>
      <PrmnntEndowmentBalanceEOYPct>0.06160</PrmnntEndowmentBalanceEOYPct>
      <TermEndowmentBalanceEOYPct>0.06130</TermEndowmentBalanceEOYPct>
      <EndowmentsHeldUnrelatedOrgInd>0</EndowmentsHeldUnrelatedOrgInd>
      <EndowmentsHeldRelatedOrgInd>0</EndowmentsHeldRelatedOrgInd>
      <LandGrp>
        <OtherCostOrOtherBasisAmt>1614791</OtherCostOrOtherBasisAmt>
        <BookValueAmt>1614791</BookValueAmt>
      </LandGrp>
      <BuildingsGrp>
        <OtherCostOrOtherBasisAmt>28405062</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>13314260</DepreciationAmt>
        <BookValueAmt>15090802</BookValueAmt>
      </BuildingsGrp>
      <OtherLandBuildingsGrp>
        <OtherCostOrOtherBasisAmt>1733264</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>1189157</DepreciationAmt>
        <BookValueAmt>544107</BookValueAmt>
      </OtherLandBuildingsGrp>
      <TotalBookValueLandBuildingsAmt>17249700</TotalBookValueLandBuildingsAmt>
      <OtherSecuritiesGrp>
        <Desc>PARTNERSHIPS AND JOINT VENTURES</Desc>
        <BookValueAmt>10193312</BookValueAmt>
        <MethodValuationCd>F</MethodValuationCd>
      </OtherSecuritiesGrp>
      <TotalBookValueSecuritiesAmt>10193312</TotalBookValueSecuritiesAmt>
      <OtherAssetsOrgGrp>
        <Desc>ACCRUED INVESTMENT INCOME</Desc>
        <BookValueAmt>15817</BookValueAmt>
      </OtherAssetsOrgGrp>
      <OtherAssetsOrgGrp>
        <Desc>BENEFICIAL INTERESTS IN PERPETUAL TRUSTS</Desc>
        <BookValueAmt>2868149</BookValueAmt>
      </OtherAssetsOrgGrp>
      <OtherAssetsOrgGrp>
        <Desc>BENEFICIAL INTEREST IN REMAINDER TRUST</Desc>
        <BookValueAmt>1282632</BookValueAmt>
      </OtherAssetsOrgGrp>
      <OtherAssetsOrgGrp>
        <Desc>OTHER ASSET</Desc>
        <BookValueAmt>900000</BookValueAmt>
      </OtherAssetsOrgGrp>
      <OtherAssetsOrgGrp>
        <Desc>CONSTRUCTION ESCROW</Desc>
        <BookValueAmt>8547962</BookValueAmt>
      </OtherAssetsOrgGrp>
      <TotalBookValueOtherAssetsAmt>13614560</TotalBookValueOtherAssetsAmt>
      <OtherLiabilitiesOrgGrp>
        <Desc>LONG-TERM ACCRUED POST RETIREMENT BENEFITS</Desc>
        <Amt>4135332</Amt>
      </OtherLiabilitiesOrgGrp>
      <OtherLiabilitiesOrgGrp>
        <Desc>LONG-TERM ACCRUED DEFERRED COMPENSATION</Desc>
        <Amt>356418</Amt>
      </OtherLiabilitiesOrgGrp>
      <TotalLiabilityAmt>4491750</TotalLiabilityAmt>
      <TotalRevEtcAuditedFinclStmtAmt>41739933</TotalRevEtcAuditedFinclStmtAmt>
      <NetUnrealizedGainsInvstAmt>24270427</NetUnrealizedGainsInvstAmt>
      <DonatedServicesAndUseFcltsAmt>83552</DonatedServicesAndUseFcltsAmt>
      <OtherRevenueAmt>83775</OtherRevenueAmt>
      <RevenueNotReportedAmt>24437754</RevenueNotReportedAmt>
      <RevenueSubtotalAmt>17302179</RevenueSubtotalAmt>
      <RevenueNotReportedFinclStmtAmt>0</RevenueNotReportedFinclStmtAmt>
      <TotalRevenuePerForm990Amt>17302179</TotalRevenuePerForm990Amt>
      <TotExpnsEtcAuditedFinclStmtAmt>14272422</TotExpnsEtcAuditedFinclStmtAmt>
      <ExpensesNotReportedAmt>0</ExpensesNotReportedAmt>
      <ExpensesSubtotalAmt>14272422</ExpensesSubtotalAmt>
      <ExpensesNotRptFinclStmtAmt>0</ExpensesNotRptFinclStmtAmt>
      <TotalExpensesPerForm990Amt>14272422</TotalExpensesPerForm990Amt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART II, LINE 9:</FormAndLineReferenceDesc>
        <ExplanationTxt>THERE ARE NO APPLICABLE AMOUNTS IN CONNECTION WITH THE ORGANIZATION'S EASEMENTS THAT ARE REQUIRED TO BE REPORTED IN ITS FINANCIAL STATEMENTS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART V, LINE 4:</FormAndLineReferenceDesc>
        <ExplanationTxt>TO FURTHER ENHANCE THE EDUCATIONAL MISSION OF THE ORGANIZATION AND PROVIDE FOR LONG TERM STABILITY.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART XI, LINE 2D - OTHER ADJUSTMENTS:</FormAndLineReferenceDesc>
        <ExplanationTxt>NON-OPERATING POSTRETIREMENT BENEFIT PLAN GAIN 83,775.</ExplanationTxt>
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    </IRS990ScheduleD>
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      <PolicyStmtInBrochuresEtcInd>1</PolicyStmtInBrochuresEtcInd>
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      <DiscriminateRaceAthltProgInd>0</DiscriminateRaceAthltProgInd>
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      <GovernmentFinancialAidRcvdInd>1</GovernmentFinancialAidRcvdInd>
      <GovernmentFinancialAidRvkdInd>0</GovernmentFinancialAidRvkdInd>
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        <FormAndLineReferenceDesc>SCHEDULE E, PART I, LINE 3</FormAndLineReferenceDesc>
        <ExplanationTxt>THROUGH ADVERTISEMENT IN LOCAL NEWSPAPER.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE E, PART I, LINE 6</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION CONTRACTS WITH LOCAL EDUCATIONAL AUTHORITIES BOTH WITHIN AND OUTSIDE MASSACHUSETTS TO PROVIDE EDUCATIONAL TRAINING TO STUDENTS WITH SPECIAL NEEDS. SEE FORM 990, PART III FOR DESCRIPTION OF SERVICES. DURING THE YEAR ENDED JUNE 30, 2021, THE ORGANIZATION RECEIVED A GRANT TOTALING $244,738 FROM THE MASSACHUSETTS DEPARTMENT OF ELEMENTARY AND SECONDARY EDUCATION TO REIMBURSE FOR VARIOUS COSTS INCURRED AS A RESULT OF COVID-19. THESE FUNDS WERE RECEIVED IN AUGUST 2021.</ExplanationTxt>
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        <PersonNm>DAVID W MANZO</PersonNm>
        <TitleTxt>PRES./EXEC. DIR. THRU 6/2021</TitleTxt>
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        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>366436</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>BRIDGET IRISH</PersonNm>
        <TitleTxt>COO/ PRES. EXEC. DIR. BEG 9/2021</TitleTxt>
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        <PersonNm>MICHAEL PEMBROKE</PersonNm>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>KRISTA MACARI</PersonNm>
        <TitleTxt>CAO</TitleTxt>
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        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>ELIZABETH PETERS</PersonNm>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 2</FormAndLineReferenceDesc>
        <ExplanationTxt>JOAN THORNDIKE AND ALEXANDER THORNDIKE HAVE A FAMILY RELATIONSHIP AND ARE MEMBERS OF THE BOARD OF TRUSTEES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION'S PRESIDENT/EXECUTIVE DIRECTOR, CHIEF FINANCIAL OFFICER AND BOARD OF TRUSTEES REVIEW A DRAFT OF THE FORM 990, WHICH IS PREPARED BY THE ORGANIZATION'S INDEPENDENT ACCOUNTANTS. ANY RESULTANT COMMENTS AND CHANGES ARE INCORPORATED INTO THE FORM BY THE INDEPENDENT ACCOUNTANTS. A FINAL VERSION OF THE FORM 990 IS THEN PROVIDED TO EACH MEMBER OF THE BOARD OF TRUSTEES PRIOR TO ITS FILING WITH THE IRS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>ALL OFFICERS AND TRUSTEES OF THE ORGANIZATION ARE REQUIRED TO FILE A STATEMENT ON AN ANNUAL BASIS DISCLOSING ANY POTENTIAL INTERESTS THAT COULD GIVE RISE TO CONFLICTS. THESE STATEMENTS ARE COMPLETED EACH FISCAL YEAR AND ARE EVALUATED BY THE OFFICERS OF THE ORGANIZATION. INDIVIDUALS WITH POTENTIAL CONFLICTS OF INTEREST ARE PROHIBITED FROM PARTICIPATING IN ANY DELIBERATIONS OR DECISIONS THAT MAY BE AFFECTED BY A POTENTIAL CONFLICT OF INTEREST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15</FormAndLineReferenceDesc>
        <ExplanationTxt>THE CHAIRMAN OF THE BOARD OF TRUSTEES USES A COMPETENT SALARY SURVEY, SUCH AS GUIDESTAR, TO COMPARE COMPENSATION FOR THE PRESIDENT OF THE ORGANIZATION WITH SIMILAR POSITIONS OF OTHER NON-PROFIT SCHOOLS SERVING CHILDREN WITH SPECIAL NEEDS, OR OTHER LEADING NON-PROFIT ORGANIZATIONS. THE CHAIRMAN MAY ALSO SOLICIT INPUT FROM OTHER TRUSTEES, OR CONVENE A COMPENSATION COMMITTEE REGARDING THE PRESIDENT'S PERFORMANCE AND COMPENSATION. THE CHAIRMAN WILL THEN PRESENT HIS/HER FINDINGS AND RECOMMENDATIONS IN AN EXECUTIVE SESSION, WITHOUT THE PRESIDENT PRESENT, TO THE FULL BOARD OF TRUSTEES FOR REVIEW AND APPROVAL. THE FULL BOARD WILL DOCUMENT ITS DELIBERATION, DECISION AND PROCESS USED IN CONNECTION WITH ITS APPROVAL OF THE PRESIDENT'S COMPENSATION. IT IS THE RESPONSIBILITY OF THE PRESIDENT TO PROPOSE COMPENSATION OF SENIOR MANAGEMENT EMPLOYEES IN ACCORDANCE WITH THE BUDGET APPROVED BY THE BOARD OF TRUSTEES. ANNUALLY, THE PRESIDENT, IN EXECUTIVE SESSION OF THE FULL BOARD, WILL PROPOSE HIS ADJUSTMENTS TO THE COMPENSATION OF SENIOR MANAGEMENT, ALONG WITH A PRESENTATION OF A COMPETENT SALARY SURVEY, SUCH AS GUIDESTAR, TO DEVELOP BENCHMARK COMPENSATION FOR SENIOR MANAGEMENT. COMPENSATION FOR SENIOR MANAGEMENT WILL BE COMPARED WITH SIMILAR POSITIONS OF OTHER NON-PROFIT SCHOOLS SERVING CHILDREN WITH SPECIAL NEEDS, OR OTHER LEADING NON-PROFIT ORGANIZATIONS. UTILIZING THIS INFORMATION, THE BOARD OF TRUSTEES WILL APPROVE THE COMPENSATION OF SENIOR MANAGEMENT AND DOCUMENT ITS DELIBERATION, DECISION AND PROCESS USED IN CONNECTION WITH ITS APPROVAL OF SENIOR MANAGEMENT'S COMPENSATION. ALL MEMBERS OF THE BOARD OF TRUSTEES SIGNED THE ORGANIZATION'S CONFLICT OF INTEREST STATEMENT. NO MEMBERS HAD A CONFLICT WITH THE VOTE ON THE COMPENSATION OF THE ORGANIZATION'S PRESIDENT.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION'S AUDITED FINANCIAL STATEMENTS ARE AVAILABLE TO THE PUBLIC VIA THE WEBSITES OF CERTAIN STATE REGULATORY AGENCIES AS WELL AS UPON REQUEST. THE ORGANIZATION'S GOVERNING DOCUMENTS AND CONFLICT OF INTEREST POLICY ARE AVAILABLE TO THE PUBLIC UPON REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART XI, LINE 9:</FormAndLineReferenceDesc>
        <ExplanationTxt>NON-OPERATING POSTRETIREMENT BENEFIT PLAN GAIN 83,775.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>
