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        <PersonNm>SANFORD HELLER</PersonNm>
        <TitleTxt>BOARD MEMBER</TitleTxt>
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        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
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        <PersonNm>STEPHEN HANSON</PersonNm>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>TOM TAO</PersonNm>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>TRACY MAITLAND</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>DR WILLIAM DONOHUE</PersonNm>
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        <OfficerInd>X</OfficerInd>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>35267</OtherCompensationAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>SHARONAH VOLKOWITZ</PersonNm>
        <TitleTxt>CHIEF FINANCIAL OFFICER</TitleTxt>
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        <OfficerInd>X</OfficerInd>
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      <Form990PartVIISectionAGrp>
        <PersonNm>WILLIAM MOSELEY</PersonNm>
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        <OfficerInd>X</OfficerInd>
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      <Form990PartVIISectionAGrp>
        <PersonNm>ABIGAIL ROJAS</PersonNm>
        <TitleTxt>GRAMMAR SCHOOL DIRECTOR</TitleTxt>
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        <ReportableCompFromOrgAmt>221628</ReportableCompFromOrgAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>REY FERNANDEZ</PersonNm>
        <TitleTxt>ASSISTANT HEAD OF SCHOOL</TitleTxt>
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        <OtherCompensationAmt>67573</OtherCompensationAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>SCOTT WILSON</PersonNm>
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        <OtherCompensationAmt>68659</OtherCompensationAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>ADAM GERSON</PersonNm>
        <TitleTxt>DIRECTOR OF TECHNOLOGY</TitleTxt>
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        <ReportableCompFromOrgAmt>235243</ReportableCompFromOrgAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>CARRIE SALVATORE</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>DIMITRIOS BENTEVIS</PersonNm>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JOSPEH GRANDE</PersonNm>
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        <OtherCompensationAmt>61168</OtherCompensationAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>PATTI COHEN</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>CHRISTOPHER JOYCE</PersonNm>
        <TitleTxt>FORMER DIRECTOR OF INSTITUTIONAL ADVANCEMENT</TitleTxt>
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        <OtherCompensationAmt>29008</OtherCompensationAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>SARAH MCLEAN</PersonNm>
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        <OtherCompensationAmt>36152</OtherCompensationAmt>
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      <TotalReportableCompFromOrgAmt>3773657</TotalReportableCompFromOrgAmt>
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      <FormerOfcrEmployeesListedInd>true</FormerOfcrEmployeesListedInd>
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      <CompensationFromOtherSrcsInd>false</CompensationFromOtherSrcsInd>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>COMPASS GROUP</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>PO BOX 417632</AddressLine1Txt>
            <CityNm>BOSTON</CityNm>
            <StateAbbreviationCd>MA</StateAbbreviationCd>
            <ZIPCd>02241</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>FOOD SERVICE</ServicesDesc>
        <CompensationAmt>3360296</CompensationAmt>
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      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>RICHTER &amp; RATNER CONTRACTING CORP</BusinessNameLine1Txt>
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        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>45 W 36TH STREET</AddressLine1Txt>
            <CityNm>NEW YORK</CityNm>
            <StateAbbreviationCd>NY</StateAbbreviationCd>
            <ZIPCd>100187904</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>CONTRACTOR</ServicesDesc>
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      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>DIRECT CLEAN</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>36-06 43RD AVE</AddressLine1Txt>
            <CityNm>LONG ISLAND CITY</CityNm>
            <StateAbbreviationCd>NY</StateAbbreviationCd>
            <ZIPCd>11101</ZIPCd>
          </USAddress>
        </ContractorAddress>
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      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>PBDW ARCHITECTS</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>49 W 37TH STREET</AddressLine1Txt>
            <CityNm>NEW YORK</CityNm>
            <StateAbbreviationCd>NY</StateAbbreviationCd>
            <ZIPCd>10018</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>ARCHITECTS</ServicesDesc>
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      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>AUSTIN &amp; CO</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>20 CORPORATE WOODS BLVD</AddressLine1Txt>
            <CityNm>ALBANY</CityNm>
            <StateAbbreviationCd>NY</StateAbbreviationCd>
            <ZIPCd>12211</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>HR CONSULTING</ServicesDesc>
        <CompensationAmt>546376</CompensationAmt>
      </ContractorCompensationGrp>
      <CntrctRcvdGreaterThan100KCnt>31</CntrctRcvdGreaterThan100KCnt>
      <FundraisingAmt>981858</FundraisingAmt>
      <GovernmentGrantsAmt>1706871</GovernmentGrantsAmt>
      <AllOtherContributionsAmt>8936502</AllOtherContributionsAmt>
      <NoncashContributionsAmt>207509</NoncashContributionsAmt>
      <TotalContributionsAmt>11625231</TotalContributionsAmt>
      <ProgramServiceRevenueGrp>
        <Desc>STUDENT TUITION &amp; FEES</Desc>
        <BusinessCd>611110</BusinessCd>
        <TotalRevenueColumnAmt>75325716</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>75325716</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>AFTER SCHOOL</Desc>
        <BusinessCd>611110</BusinessCd>
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        <RelatedOrExemptFuncIncomeAmt>846989</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>STUDENTS ACTIVITY</Desc>
        <BusinessCd>611110</BusinessCd>
        <TotalRevenueColumnAmt>144889</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>144889</RelatedOrExemptFuncIncomeAmt>
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        <RelatedOrExemptFuncIncomeAmt>0</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>0</ExclusionAmt>
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      <TotalProgramServiceRevenueAmt>76317594</TotalProgramServiceRevenueAmt>
      <InvestmentIncomeGrp>
        <TotalRevenueColumnAmt>3874216</TotalRevenueColumnAmt>
        <ExclusionAmt>3874216</ExclusionAmt>
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      <RentalIncomeOrLossGrp>
        <RealAmt>0</RealAmt>
        <PersonalAmt>0</PersonalAmt>
      </RentalIncomeOrLossGrp>
      <GrossAmountSalesAssetsGrp>
        <SecuritiesAmt>163085157</SecuritiesAmt>
      </GrossAmountSalesAssetsGrp>
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        <SecuritiesAmt>107245</SecuritiesAmt>
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      <NetGainOrLossInvestmentsGrp>
        <TotalRevenueColumnAmt>107245</TotalRevenueColumnAmt>
        <ExclusionAmt>107245</ExclusionAmt>
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      <ContriRptFundraisingEventAmt>981858</ContriRptFundraisingEventAmt>
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      <NetIncmFromFundraisingEvtGrp>
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        <ExclusionAmt>177344</ExclusionAmt>
      </NetIncmFromFundraisingEvtGrp>
      <OtherRevenueMiscGrp>
        <Desc>INSURANCE REFUND</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>124902</TotalRevenueColumnAmt>
        <ExclusionAmt>124902</ExclusionAmt>
      </OtherRevenueMiscGrp>
      <OtherRevenueMiscGrp>
        <Desc>FINANCE CHARGES</Desc>
        <BusinessCd>524298</BusinessCd>
        <TotalRevenueColumnAmt>427656</TotalRevenueColumnAmt>
        <ExclusionAmt>427656</ExclusionAmt>
      </OtherRevenueMiscGrp>
      <OtherRevenueMiscGrp>
        <Desc>OTHER</Desc>
        <BusinessCd>900099</BusinessCd>
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      <MiscellaneousRevenueGrp>
        <TotalRevenueColumnAmt>0</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>0</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
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        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
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        <ProgramServicesAmt>10003114</ProgramServicesAmt>
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        <ProgramServicesAmt>961904</ProgramServicesAmt>
        <ManagementAndGeneralAmt>2044046</ManagementAndGeneralAmt>
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        <ProgramServicesAmt>32365165</ProgramServicesAmt>
        <ManagementAndGeneralAmt>5024821</ManagementAndGeneralAmt>
        <FundraisingAmt>525085</FundraisingAmt>
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        <ProgramServicesAmt>2005308</ProgramServicesAmt>
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        <ProgramServicesAmt>5468827</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1002507</ManagementAndGeneralAmt>
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        <ProgramServicesAmt>2128522</ProgramServicesAmt>
        <ManagementAndGeneralAmt>434647</ManagementAndGeneralAmt>
        <FundraisingAmt>33645</FundraisingAmt>
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        <ManagementAndGeneralAmt>213951</ManagementAndGeneralAmt>
      </FeesForServicesLegalGrp>
      <FeesForServicesAccountingGrp>
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        <ManagementAndGeneralAmt>79668</ManagementAndGeneralAmt>
      </FeesForServicesAccountingGrp>
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        <ManagementAndGeneralAmt>220054</ManagementAndGeneralAmt>
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        <ManagementAndGeneralAmt>563094</ManagementAndGeneralAmt>
        <FundraisingAmt>455081</FundraisingAmt>
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        <FundraisingAmt>5113</FundraisingAmt>
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        <ProgramServicesAmt>2844644</ProgramServicesAmt>
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      <OtherExpensesGrp>
        <Desc>STUDENT ACTIVITIES</Desc>
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        <ProgramServicesAmt>1026345</ProgramServicesAmt>
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      <OtherExpensesGrp>
        <Desc>EVENTS</Desc>
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        <FundraisingAmt>208068</FundraisingAmt>
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      <OtherExpensesGrp>
        <Desc>OTHER</Desc>
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        <ProgramServicesAmt>440345</ProgramServicesAmt>
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        <FundraisingAmt>3935</FundraisingAmt>
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      <AllOtherExpensesGrp>
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        <ProgramServicesAmt>68365318</ProgramServicesAmt>
        <ManagementAndGeneralAmt>11190256</ManagementAndGeneralAmt>
        <FundraisingAmt>1411985</FundraisingAmt>
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        <EOYAmt>5323491</EOYAmt>
      </CashNonInterestBearingGrp>
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        <EOYAmt>80517402</EOYAmt>
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        <EOYAmt>6391091</EOYAmt>
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        <EOYAmt>79246</EOYAmt>
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        <EOYAmt>0</EOYAmt>
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        <EOYAmt>0</EOYAmt>
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      <PrepaidExpensesDefrdChargesGrp>
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        <EOYAmt>1228193</EOYAmt>
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      <LandBldgEquipAccumDeprecAmt>63545714</LandBldgEquipAccumDeprecAmt>
      <LandBldgEquipBasisNetGrp>
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        <EOYAmt>61135136</EOYAmt>
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      </InvestmentsOtherSecuritiesGrp>
      <InvestmentsProgramRelatedGrp>
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      </InvestmentsProgramRelatedGrp>
      <OtherAssetsTotalGrp>
        <BOYAmt>2218101</BOYAmt>
        <EOYAmt>2263716</EOYAmt>
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      <TotalAssetsGrp>
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        <PersonNm>SCOTT WILSON</PersonNm>
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        <PersonNm>ABIGAIL ROJAS</PersonNm>
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        <PersonNm>CHRISTOPHER JOYCE</PersonNm>
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        <PersonNm>CARRIE SALVATORE</PersonNm>
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        <PersonNm>ADAM GERSON</PersonNm>
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        <PersonNm>PATTI COHEN</PersonNm>
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        <PersonNm>JOSPEH GRANDE</PersonNm>
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        <ContributionCnt>23</ContributionCnt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 11b Review of form 990 by governing body</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FORM 990 WAS MADE AVAILABLE TO THE BOARD OF DIRECTORS. THE BOARD WAS ASKED TO SUBMIT ANY COMMENTS OR QUESTIONS TO THE HEADMASTER AND CFO. AFTER COMMENTS WERE RECEIVED AND REVIEWED, THE FINAL FORM 990 WAS DISTRIBUTED TO THE BOARD PRIOR TO ITS SUBMISSION TO THE IRS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 12c Conflict of interest policy</FormAndLineReferenceDesc>
        <ExplanationTxt>OFFICERS, DIRECTORS, TRUSTEES, AND KEY EMPLOYEES SHALL ANNUALLY COMPLETE A DISCLOSURE FORM IDENTIFYING ANY RELATIONSHIPS, POSITIONS, OR CIRCUMSTANCES IN WHICH SUCH INDIVIDUAL IS INVOLVED THAT HE OR SHE BELIEVES COULD CONTRIBUTE TO A CONFLICT OF INTEREST ARISING. SUCH DISCLOSURE SHALL BE MADE AS SOON AS THE POTENTIAL CONFLICT OF INTEREST IS KNOWN TO THAT PERSON. A PERSON WHO HAS A CONFLICT OF INTEREST SHALL NOT PARTICIPATE IN OR BE PERMITTED TO HEAR THE BOARD'S OR COMMITTEE'S DISCUSSION OF THE MATTER EXCEPT TO DISCLOSE MATERIAL FACTS AND TO RESPOND TO QUESTIONS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 15a Process to establish compensation of top management official</FormAndLineReferenceDesc>
        <ExplanationTxt>THE HEADMASTER'S EMPLOYMENT COMMENCED IN 2017. INFORMATION FROM NAIS AS WELL AS A REDACTED SALARY SURVEY PERFORMED FOR A COMPARABLE PRIVATE SCHOOL WAS USED. THE BOARD USED ALL OF THESE RESOURCES TO NEGOTIATE A COMPETITIVE SALARY FOR THE NEXT THREE YEARS THROUGH 2020. THIS PROCESS WAS PERFORMED AGAIN IN THE SUMMER OF 2020 FOR THE NEXT THREE YEARS THROUGH 2023. IN MARCH OF 2022, BILL'S CONTRACT WAS NEGOCIATED FOR THE 2023-2024 SCHOOL YEAR.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 19 Required documents available to the public</FormAndLineReferenceDesc>
        <ExplanationTxt>GOVERNING DOCUMENTS, CONFLICT OF INTEREST POLICY, AND FINANCIAL STATEMENTS ARE AVAILABLE TO THE PUBLIC UPON REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART III, LINE 1 ORGANIZATION'S MISSION</FormAndLineReferenceDesc>
        <ExplanationTxt>FOUNDED IN 1764, COLUMBIA GRAMMAR AND PREPARATORY SCHOOL IS COMMITTED TO A RIGOROUS AND COMPREHENSIVE COLLEGE PREPARATORY CURRICULUM WITH A SERIOUS EMPHASIS ON ART, MUSIC AND DRAMA. THE ACADEMIC PROGRAM IS STRUCTURED AND BALANCED WITHIN THE LIBERAL ARTS AND SCIENCES IN ORDER TO DEVELOP A STUDENT'S INTELLECTUAL POTENTIAL TO ITS FULLEST FOR COLLEGE AND BEYOND. THE PROGRAM INCLUDES ENGLISH, LANGUAGE ARTS, FOREIGN LANGUAGE INSTRUCTION, MATHEMATICS, THE SCIENCES, CURRENT AND HISTORICAL SOCIAL STUDIES, PHYSICAL EDUCATION, TECHNOLOGY AND THE FINE ARTS. AT THE SAME TIME, THE SCHOOL RECOGNIZES ITS FUNDAMENTAL RESPONSIBILITY TO DEVELOP GOOD CHARACTER, STANDARDS OF CONDUCT AND A SENSE OF SOCIAL RESPONSIBILITY. WITHIN THE SCHOOL COMMUNITY, THE DEVELOPMENT OF GOOD CITIZENSHIP IN OUR STUDENTS IS REGARDED AS A CRUCIAL AND INTEGRAL PART OF THEIR EDUCATION.</ExplanationTxt>
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</Return>