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        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Harry Yan</PersonNm>
        <TitleTxt>Board Member</TitleTxt>
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        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Heather Beck</PersonNm>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>25340</OtherCompensationAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>John Murphy</PersonNm>
        <TitleTxt>Chief Financial Officer</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
        <OfficerInd>X</OfficerInd>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>50683</OtherCompensationAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>Severine Ireland</PersonNm>
        <TitleTxt>Proviseure</TitleTxt>
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        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
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        <ReportableCompFromOrgAmt>150113</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>31783</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Thomas Oden</PersonNm>
        <TitleTxt>Secondary Head</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
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        <OtherCompensationAmt>46778</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Tim Long</PersonNm>
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        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Jamila MacArthur</PersonNm>
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        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
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        <OtherCompensationAmt>26045</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Egmond Boon</PersonNm>
        <TitleTxt>Chief Innovation Officer</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
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      <Form990PartVIISectionAGrp>
        <PersonNm>Lauren Linn</PersonNm>
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        <OtherCompensationAmt>30891</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Lindsay Youngdahl</PersonNm>
        <TitleTxt>Athletic Director</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>20872</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Chris Wozniak</PersonNm>
        <TitleTxt>IT Director</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>160598</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>20386</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Pierre Puget</PersonNm>
        <TitleTxt>Former Proviseur</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
        <FormerOfcrDirectorTrusteeInd>X</FormerOfcrDirectorTrusteeInd>
        <ReportableCompFromOrgAmt>308176</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>7063</OtherCompensationAmt>
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      <TotalReportableCompFromOrgAmt>2910866</TotalReportableCompFromOrgAmt>
      <TotReportableCompRltdOrgAmt>0</TotReportableCompRltdOrgAmt>
      <TotalOtherCompensationAmt>313714</TotalOtherCompensationAmt>
      <IndivRcvdGreaterThan100KCnt>50</IndivRcvdGreaterThan100KCnt>
      <FormerOfcrEmployeesListedInd>1</FormerOfcrEmployeesListedInd>
      <TotalCompGreaterThan150KInd>1</TotalCompGreaterThan150KInd>
      <CompensationFromOtherSrcsInd>0</CompensationFromOtherSrcsInd>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>David E Harvey Builders Inc</BusinessNameLine1Txt>
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        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>3630 Westchase</AddressLine1Txt>
            <CityNm>Houston</CityNm>
            <StateAbbreviationCd>TX</StateAbbreviationCd>
            <ZIPCd>77042</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>Construction</ServicesDesc>
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      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>Sage Dining Services Inc</BusinessNameLine1Txt>
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        </ContractorName>
        <ContractorAddress>
          <USAddress>
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            <CityNm>Lutherville</CityNm>
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            <ZIPCd>21093</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>Cafeteria services</ServicesDesc>
        <CompensationAmt>2434879</CompensationAmt>
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      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>CDW LLC</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>200 N Milwaukee Ave</AddressLine1Txt>
            <CityNm>Vernon Hills</CityNm>
            <StateAbbreviationCd>IL</StateAbbreviationCd>
            <ZIPCd>60061</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>IT services</ServicesDesc>
        <CompensationAmt>925017</CompensationAmt>
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      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>AFC Corp Transportation</BusinessNameLine1Txt>
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        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>15734 Aldine Westfield Rd</AddressLine1Txt>
            <CityNm>Houston</CityNm>
            <StateAbbreviationCd>TX</StateAbbreviationCd>
            <ZIPCd>77032</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>Bus services</ServicesDesc>
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      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>EF Educational Tours</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>Two Education Cir</AddressLine1Txt>
            <CityNm>Cambridge</CityNm>
            <StateAbbreviationCd>MA</StateAbbreviationCd>
            <ZIPCd>02141</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>Travel services</ServicesDesc>
        <CompensationAmt>668260</CompensationAmt>
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      <CntrctRcvdGreaterThan100KCnt>16</CntrctRcvdGreaterThan100KCnt>
      <FundraisingAmt>800445</FundraisingAmt>
      <AllOtherContributionsAmt>1720315</AllOtherContributionsAmt>
      <NoncashContributionsAmt>264654</NoncashContributionsAmt>
      <TotalContributionsAmt>2520760</TotalContributionsAmt>
      <ProgramServiceRevenueGrp>
        <Desc>Tuition and fees</Desc>
        <BusinessCd>611600</BusinessCd>
        <TotalRevenueColumnAmt>61229458</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>61229458</RelatedOrExemptFuncIncomeAmt>
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      <ProgramServiceRevenueGrp>
        <Desc>Program service fees</Desc>
        <BusinessCd>611710</BusinessCd>
        <TotalRevenueColumnAmt>4124863</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>4124863</RelatedOrExemptFuncIncomeAmt>
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      <ProgramServiceRevenueGrp>
        <Desc>Other program revenue</Desc>
        <BusinessCd>611710</BusinessCd>
        <TotalRevenueColumnAmt>391680</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>391680</RelatedOrExemptFuncIncomeAmt>
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      <ProgramServiceRevenueGrp>
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        <BusinessCd>611710</BusinessCd>
        <TotalRevenueColumnAmt>345383</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>345383</RelatedOrExemptFuncIncomeAmt>
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      <ProgramServiceRevenueGrp>
        <Desc>Cafe revenue</Desc>
        <BusinessCd>611710</BusinessCd>
        <TotalRevenueColumnAmt>11105</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>11105</RelatedOrExemptFuncIncomeAmt>
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      <TotalProgramServiceRevenueAmt>66102489</TotalProgramServiceRevenueAmt>
      <InvestmentIncomeGrp>
        <TotalRevenueColumnAmt>1949962</TotalRevenueColumnAmt>
        <ExclusionAmt>1949962</ExclusionAmt>
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      <GrossAmountSalesAssetsGrp>
        <SecuritiesAmt>36743298</SecuritiesAmt>
        <OtherAmt>52272</OtherAmt>
      </GrossAmountSalesAssetsGrp>
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      <ContriRptFundraisingEventAmt>800445</ContriRptFundraisingEventAmt>
      <FundraisingDirectExpensesAmt>498507</FundraisingDirectExpensesAmt>
      <NetIncmFromFundraisingEvtGrp>
        <TotalRevenueColumnAmt>104951</TotalRevenueColumnAmt>
        <ExclusionAmt>104951</ExclusionAmt>
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      <GrossSalesOfInventoryAmt>804099</GrossSalesOfInventoryAmt>
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        <RelatedOrExemptFuncIncomeAmt>317543</RelatedOrExemptFuncIncomeAmt>
      </NetIncomeOrLossGrp>
      <TotalRevenueGrp>
        <TotalRevenueColumnAmt>72542072</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>66420032</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
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      <GrantsToDomesticIndividualsGrp>
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        <ProgramServicesAmt>2697335</ProgramServicesAmt>
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        <ProgramServicesAmt>1441563</ProgramServicesAmt>
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        <FundraisingAmt>38315</FundraisingAmt>
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        <ProgramServicesAmt>27687420</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1872146</ManagementAndGeneralAmt>
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        <ProgramServicesAmt>1070915</ProgramServicesAmt>
        <ManagementAndGeneralAmt>72398</ManagementAndGeneralAmt>
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        <ProgramServicesAmt>6560230</ProgramServicesAmt>
        <ManagementAndGeneralAmt>442893</ManagementAndGeneralAmt>
        <FundraisingAmt>178601</FundraisingAmt>
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        <ProgramServicesAmt>2102450</ProgramServicesAmt>
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        <FundraisingAmt>57219</FundraisingAmt>
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        <TotalAmt>79948</TotalAmt>
        <ManagementAndGeneralAmt>79948</ManagementAndGeneralAmt>
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      <FeesForServicesAccountingGrp>
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        <ManagementAndGeneralAmt>105807</ManagementAndGeneralAmt>
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      <FeesForSrvcInvstMgmntFeesGrp>
        <TotalAmt>168201</TotalAmt>
        <ManagementAndGeneralAmt>168201</ManagementAndGeneralAmt>
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        <ProgramServicesAmt>1034642</ProgramServicesAmt>
        <ManagementAndGeneralAmt>216047</ManagementAndGeneralAmt>
        <FundraisingAmt>875</FundraisingAmt>
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      <AdvertisingGrp>
        <TotalAmt>95344</TotalAmt>
        <ManagementAndGeneralAmt>38867</ManagementAndGeneralAmt>
        <FundraisingAmt>56477</FundraisingAmt>
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      <OfficeExpensesGrp>
        <TotalAmt>1344261</TotalAmt>
        <ProgramServicesAmt>609878</ProgramServicesAmt>
        <ManagementAndGeneralAmt>611834</ManagementAndGeneralAmt>
        <FundraisingAmt>122549</FundraisingAmt>
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        <ProgramServicesAmt>2399464</ProgramServicesAmt>
        <ManagementAndGeneralAmt>95325</ManagementAndGeneralAmt>
        <FundraisingAmt>15982</FundraisingAmt>
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        <ProgramServicesAmt>2392836</ProgramServicesAmt>
        <ManagementAndGeneralAmt>98618</ManagementAndGeneralAmt>
        <FundraisingAmt>12728</FundraisingAmt>
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        <ProgramServicesAmt>350778</ProgramServicesAmt>
        <ManagementAndGeneralAmt>2066</ManagementAndGeneralAmt>
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        <ManagementAndGeneralAmt>86766</ManagementAndGeneralAmt>
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        <ProgramServicesAmt>1094953</ProgramServicesAmt>
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        <ProgramServicesAmt>734100</ProgramServicesAmt>
        <ManagementAndGeneralAmt>30254</ManagementAndGeneralAmt>
        <FundraisingAmt>3905</FundraisingAmt>
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        <ProgramServicesAmt>2087147</ProgramServicesAmt>
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      <OtherExpensesGrp>
        <Desc>Cafeteria expenses</Desc>
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        <ProgramServicesAmt>2056646</ProgramServicesAmt>
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      <OtherExpensesGrp>
        <Desc>Buses, transportation</Desc>
        <TotalAmt>1474854</TotalAmt>
        <ProgramServicesAmt>1474854</ProgramServicesAmt>
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      <OtherExpensesGrp>
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        <ProgramServicesAmt>702300</ProgramServicesAmt>
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      <AllOtherExpensesGrp>
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        <ProgramServicesAmt>198409</ProgramServicesAmt>
        <ManagementAndGeneralAmt>19705</ManagementAndGeneralAmt>
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      <TotalFunctionalExpensesGrp>
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        <ProgramServicesAmt>63258704</ProgramServicesAmt>
        <ManagementAndGeneralAmt>4415384</ManagementAndGeneralAmt>
        <FundraisingAmt>1459032</FundraisingAmt>
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        <EOYAmt>4177</EOYAmt>
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        <EOYAmt>54015923</EOYAmt>
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        <EOYAmt>2247791</EOYAmt>
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      <AccountsReceivableGrp>
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        <EOYAmt>266834</EOYAmt>
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        <EOYAmt>470415</EOYAmt>
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      <PrepaidExpensesDefrdChargesGrp>
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        <EOYAmt>1200410</EOYAmt>
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      <LandBldgEquipCostOrOtherBssAmt>186443042</LandBldgEquipCostOrOtherBssAmt>
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        <EOYAmt>138178952</EOYAmt>
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      <InvestmentsPubTradedSecGrp>
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        <EOYAmt>44729515</EOYAmt>
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        <EOYAmt>334</EOYAmt>
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        <BOYAmt>235901283</BOYAmt>
        <EOYAmt>241114351</EOYAmt>
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      <AccountsPayableAccrExpnssGrp>
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        <EOYAmt>4409910</EOYAmt>
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      <DeferredRevenueGrp>
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        <EOYAmt>46847517</EOYAmt>
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      <TaxExemptBondLiabilitiesGrp>
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        <EOYAmt>59482066</EOYAmt>
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      <TotalLiabilitiesGrp>
        <BOYAmt>111956671</BOYAmt>
        <EOYAmt>110739493</EOYAmt>
      </TotalLiabilitiesGrp>
      <OrganizationFollowsFASB117Ind>X</OrganizationFollowsFASB117Ind>
      <NoDonorRestrictionNetAssetsGrp>
        <BOYAmt>122659799</BOYAmt>
        <EOYAmt>129169660</EOYAmt>
      </NoDonorRestrictionNetAssetsGrp>
      <DonorRestrictionNetAssetsGrp>
        <BOYAmt>1284813</BOYAmt>
        <EOYAmt>1205198</EOYAmt>
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        <TotalCompensationFilingOrgAmt>233704</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Tim Long</PersonNm>
        <TitleTxt>Lower School Head</TitleTxt>
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        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>211624</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Lindsay Youngdahl</PersonNm>
        <TitleTxt>Athletic Director</TitleTxt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Severine Ireland</PersonNm>
        <TitleTxt>Proviseure</TitleTxt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Chris Wozniak</PersonNm>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part I, Line 1a</FormAndLineReferenceDesc>
        <ExplanationTxt>The Head of School, Heather Beck, received a housing allowance ($33,000), a car allowance ($10,800) and a health/social club membership ($5,755). These benefits are included in her taxable compensation. The total of $49,555 is included in Part II, Col (B)(iii). All school employees, including those reported on Part VII, received bonus payments in December 2024 that were grossed up.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part I, Lines 4a-b</FormAndLineReferenceDesc>
        <ExplanationTxt>Pierre Puget received a severance payment of $117,000. A Section 457(f) nonqualified plan was created for Heather Beck. The initial contribution of $100,000 was made in Spring 2025. This amount will be reflect in her calendar year 2025 compensation.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part I, Line 7</FormAndLineReferenceDesc>
        <ExplanationTxt>Certain officers received bonus payments during the year as reflected on Part II, column (b)(ii). Bonus payments are part of the budget approved by the Board each year.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleJ>
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        <BondReferenceCd>A</BondReferenceCd>
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        <PurposeDesc>Loan refinancing, capital construction</PurposeDesc>
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        <MgmtContractBondFincdPropInd>0</MgmtContractBondFincdPropInd>
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        <ProceduresCorrectiveActionInd>1</ProceduresCorrectiveActionInd>
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        <ContributionCnt>5</ContributionCnt>
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        <MethodOfDeterminingRevenuesTxt>NYSE</MethodOfDeterminingRevenuesTxt>
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        <MethodOfDeterminingRevenuesTxt>FMV</MethodOfDeterminingRevenuesTxt>
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    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 11b</FormAndLineReferenceDesc>
        <ExplanationTxt>Form 990 is provided to the full Board of Trustees prior to filing with the IRS, following completion of the Finance and Audit Committee's review. Awty will try to maintain a donor's anonymity when requested by the donor to the extent allowable by the IRS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 12c</FormAndLineReferenceDesc>
        <ExplanationTxt>A conflict of interest agreement is signed by each Trustee and key employee and submitted to the CFO annually.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 15</FormAndLineReferenceDesc>
        <ExplanationTxt>The Head of School has a long-term employment agreement that is reviewed and executed by the Board Chair. To determine compensation for the Head of School, the Board reviews a Head of School compensation study of other independent schools in the United States. For other key positions, the School compares base salaries to similar positions at other independent schools in the United States with similar enrollment, annual tuition and total employees.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section C, line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>Available upon request.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
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        <EndOfYearAssetsAmt>22492524</EndOfYearAssetsAmt>
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      <LoansOrGuaranteesFromOthOrgInd>0</LoansOrGuaranteesFromOthOrgInd>
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      <PerformOfServicesForOthOrgInd>0</PerformOfServicesForOthOrgInd>
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  </ReturnData>
</Return>