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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Jay Henry</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
        <AverageHoursPerWeekRt>1.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Zack Hicks</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
        <AverageHoursPerWeekRt>1.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Joan Buchanan Hill EdD</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
        <AverageHoursPerWeekRt>1.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Maria-Cristina Jaramillo</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
        <AverageHoursPerWeekRt>1.0</AverageHoursPerWeekRt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Lester Levy Jr</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
        <AverageHoursPerWeekRt>1.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>E Pierce Marshall Jr</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
        <AverageHoursPerWeekRt>1.0</AverageHoursPerWeekRt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Manju Menon</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
        <AverageHoursPerWeekRt>1.0</AverageHoursPerWeekRt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Rich Moses</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Rebekah Newman</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
        <AverageHoursPerWeekRt>1.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Terry Oxford</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
        <AverageHoursPerWeekRt>1.0</AverageHoursPerWeekRt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Guillermo Perales</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>Tracy Rathbun</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>William E Rose</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Augusto Sasso</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Ashley Scheer</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
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        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Grace Smith</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Patricia Smith</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
        <AverageHoursPerWeekRt>1.0</AverageHoursPerWeekRt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Bharti Subramanian PhD</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>Beth Thomas</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Michael Waldman</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Clifford Weiner</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Linda Wimberly</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Neena R Wiora</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Jeff Zlotky</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Scott Griggs</PersonNm>
        <TitleTxt>Head of School</TitleTxt>
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        <OtherCompensationAmt>142312</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Melissa Orth</PersonNm>
        <TitleTxt>CFO/COO - Thru 08/2017</TitleTxt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Kendra Grace</PersonNm>
        <TitleTxt>CFO/COO - As of 08/2017</TitleTxt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Julie Diaz</PersonNm>
        <TitleTxt>CAO - Thru 10/2017</TitleTxt>
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        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Michael Simpson</PersonNm>
        <TitleTxt>Head of Lower School</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>Susan Palmer</PersonNm>
        <TitleTxt>Head of Middle School</TitleTxt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Chad Wabrek</PersonNm>
        <TitleTxt>Head of Athletics</TitleTxt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Trevor Worcester</PersonNm>
        <TitleTxt>Head of upper school</TitleTxt>
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        <OtherCompensationAmt>41557</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
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      <IndivRcvdGreaterThan100KCnt>34</IndivRcvdGreaterThan100KCnt>
      <FormerOfcrEmployeesListedInd>false</FormerOfcrEmployeesListedInd>
      <TotalCompGreaterThan150KInd>true</TotalCompGreaterThan150KInd>
      <CompensationFromOtherSrcsInd>false</CompensationFromOtherSrcsInd>
      <ContractorCompensationGrp>
        <ContractorName>
          <PersonNm>SAGE DINING SERVICES INC</PersonNm>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>1402 York Rd Suite 100</AddressLine1Txt>
            <CityNm>LUTHERVILLE</CityNm>
            <StateAbbreviationCd>MD</StateAbbreviationCd>
            <ZIPCd>21093</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>Cafeteria</ServicesDesc>
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      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <PersonNm>SELECT COMMERICAL SERVICES LLC</PersonNm>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>1801 Royal ln 110</AddressLine1Txt>
            <CityNm>DALLAS</CityNm>
            <StateAbbreviationCd>TX</StateAbbreviationCd>
            <ZIPCd>75229</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>Custodial</ServicesDesc>
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      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <PersonNm>SANAPPTX</PersonNm>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>6404 International Pkwy Suite 2200</AddressLine1Txt>
            <CityNm>PLANO</CityNm>
            <StateAbbreviationCd>TX</StateAbbreviationCd>
            <ZIPCd>75093</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>Technology</ServicesDesc>
        <CompensationAmt>491199</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <PersonNm>H G SYSTEMS</PersonNm>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>3614 Security Street</AddressLine1Txt>
            <CityNm>GARLAND</CityNm>
            <StateAbbreviationCd>TX</StateAbbreviationCd>
            <ZIPCd>75042</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>HVAC</ServicesDesc>
        <CompensationAmt>395008</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <PersonNm>SPECTRA CONTRACT FLOORING SERVICES</PersonNm>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>710 Gateway Blvd Suite 100</AddressLine1Txt>
            <CityNm>COPPELL</CityNm>
            <StateAbbreviationCd>TX</StateAbbreviationCd>
            <ZIPCd>75019</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>Flooring</ServicesDesc>
        <CompensationAmt>362663</CompensationAmt>
      </ContractorCompensationGrp>
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      <FundraisingAmt>107750</FundraisingAmt>
      <AllOtherContributionsAmt>2610601</AllOtherContributionsAmt>
      <NoncashContributionsAmt>403770</NoncashContributionsAmt>
      <TotalContributionsAmt>2718351</TotalContributionsAmt>
      <ProgramServiceRevenueGrp>
        <Desc>TUITION AND FEES</Desc>
        <BusinessCd>611110</BusinessCd>
        <TotalRevenueColumnAmt>36053617</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>36053617</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>SUMMER PROGRAMS</Desc>
        <BusinessCd>713990</BusinessCd>
        <TotalRevenueColumnAmt>1453913</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>1453913</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>CAFETERIA</Desc>
        <BusinessCd>722210</BusinessCd>
        <TotalRevenueColumnAmt>1378849</TotalRevenueColumnAmt>
        <ExclusionAmt>1378849</ExclusionAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
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        <ContributionsAmt>121390</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>4853585</InvestmentEarningsOrLossesAmt>
        <GrantsOrScholarshipsAmt>137937</GrantsOrScholarshipsAmt>
        <OtherExpendituresAmt>1827581</OtherExpendituresAmt>
        <EndYearBalanceAmt>50238956</EndYearBalanceAmt>
      </CYMinus4YrEndwmtFundGrp>
      <BoardDesignatedBalanceEOYPct>0.60520</BoardDesignatedBalanceEOYPct>
      <PrmnntEndowmentBalanceEOYPct>0.24230</PrmnntEndowmentBalanceEOYPct>
      <TermEndowmentBalanceEOYPct>0.15250</TermEndowmentBalanceEOYPct>
      <EndowmentsHeldUnrelatedOrgInd>false</EndowmentsHeldUnrelatedOrgInd>
      <EndowmentsHeldRelatedOrgInd>false</EndowmentsHeldRelatedOrgInd>
      <LandGrp>
        <OtherCostOrOtherBasisAmt>253345</OtherCostOrOtherBasisAmt>
        <BookValueAmt>253345</BookValueAmt>
      </LandGrp>
      <BuildingsGrp>
        <OtherCostOrOtherBasisAmt>92258011</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>35848988</DepreciationAmt>
        <BookValueAmt>56409023</BookValueAmt>
      </BuildingsGrp>
      <LeaseholdImprovementsGrp />
      <EquipmentGrp>
        <OtherCostOrOtherBasisAmt>11899812</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>11628302</DepreciationAmt>
        <BookValueAmt>271510</BookValueAmt>
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      <OtherLandBuildingsGrp>
        <OtherCostOrOtherBasisAmt>6560982</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>6145171</DepreciationAmt>
        <BookValueAmt>415811</BookValueAmt>
      </OtherLandBuildingsGrp>
      <TotalBookValueLandBuildingsAmt>57349689</TotalBookValueLandBuildingsAmt>
      <FinancialDerivativesGrp />
      <CloselyHeldEquityInterestsGrp />
      <OtherSecuritiesGrp>
        <Desc>PIMCO SHORT TERM INSTL.</Desc>
        <BookValueAmt>10227961</BookValueAmt>
        <MethodValuationCd>F</MethodValuationCd>
      </OtherSecuritiesGrp>
      <OtherSecuritiesGrp>
        <Desc>SCHWAB S&amp;P 500 INDEX FD.</Desc>
        <BookValueAmt>11651452</BookValueAmt>
        <MethodValuationCd>F</MethodValuationCd>
      </OtherSecuritiesGrp>
      <OtherSecuritiesGrp>
        <Desc>ALTERNATIVE INVESTMENTS</Desc>
        <BookValueAmt>2846170</BookValueAmt>
        <MethodValuationCd>F</MethodValuationCd>
      </OtherSecuritiesGrp>
      <TotalBookValueSecuritiesAmt>24725583</TotalBookValueSecuritiesAmt>
      <FederalIncomeTaxLiabilityAmt>0</FederalIncomeTaxLiabilityAmt>
      <OtherLiabilitiesOrgGrp>
        <Desc>NONQUALIFIED DEFERRED COMP</Desc>
        <Amt>119704</Amt>
      </OtherLiabilitiesOrgGrp>
      <TotalLiabilityAmt>119704</TotalLiabilityAmt>
      <FootnoteTextInd>X</FootnoteTextInd>
      <TotalRevEtcAuditedFinclStmtAmt>40908402</TotalRevEtcAuditedFinclStmtAmt>
      <NetUnrealizedGainsInvstAmt>1095292</NetUnrealizedGainsInvstAmt>
      <DonatedServicesAndUseFcltsAmt>1950</DonatedServicesAndUseFcltsAmt>
      <OtherRevenueAmt>-31967</OtherRevenueAmt>
      <RevenueNotReportedAmt>1065275</RevenueNotReportedAmt>
      <RevenueSubtotalAmt>39843127</RevenueSubtotalAmt>
      <InvestmentExpensesNotIncldAmt>207272</InvestmentExpensesNotIncldAmt>
      <OtherRevenuesNotIncludedAmt>5519434</OtherRevenuesNotIncludedAmt>
      <RevenueNotReportedFinclStmtAmt>5726706</RevenueNotReportedFinclStmtAmt>
      <TotalRevenuePerForm990Amt>45569833</TotalRevenuePerForm990Amt>
      <TotExpnsEtcAuditedFinclStmtAmt>38986524</TotExpnsEtcAuditedFinclStmtAmt>
      <ExpensesSubtotalAmt>38986524</ExpensesSubtotalAmt>
      <InvestmentExpensesNotIncld2Amt>207272</InvestmentExpensesNotIncld2Amt>
      <OtherExpensesNotIncludedAmt>5519434</OtherExpensesNotIncludedAmt>
      <ExpensesNotRptFinclStmtAmt>5726706</ExpensesNotRptFinclStmtAmt>
      <TotalExpensesPerForm990Amt>44713230</TotalExpensesPerForm990Amt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>COLLECTIONS OF ART</FormAndLineReferenceDesc>
        <ExplanationTxt>SCHEDULE D, PART III, LINE 4 OVER A PERIOD OF TIME THE SCHOOL HAS RECEIVED CONTRIBUTIONS OF WORKS OF ART AND FURNISHINGS TO BE EXHIBITED IN VARIOUS LOCATIONS ON THE CAMPUS. THESE ITEMS HAVE BEEN CAPITALIZED AS COLLECTIONS. THE COLLECTION NOT ONLY ENHANCES THE AESTHETIC ENVIRONMENT OF THE SCHOOL, IT SUPPORTS THE CURRICULUM OF THE SCHOOL BY MAKING ART AVAILABLE TO STUDENTS. THE COLLECTIONS ARE RECORDED AT APPRAISED VALUE WHEN DONATED. THE SCHOOL UNDERTAKES TO CARE FOR, PROTECT, AND PRESERVE SUCH CONTRIBUTED WORKS OF ART AND FURNISHINGS. COLLECTION ITEMS ARE INSPECTED PERIODICALLY AND REPAIRED AS REQUIRED.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>INTENDED USES OF ENDOWMENT FUNDS</FormAndLineReferenceDesc>
        <ExplanationTxt>SCHEDULE D, PART V, LINE 4 SOME ENDOWMENT FUNDS ARE DESIGNATED BY THE DONOR OR THE BOARD TO SUPPORT FINANCIAL AID, FACULTY, TECHNOLOGY, AND OTHER SPECIFIC PROGRAMS. GENERAL ENDOWMENT FUNDS ARE USED TO SUPPORT GENERAL OPERATIONS OF THE SCHOOL.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FIN 48 (ASC 740) FOOTNOTE</FormAndLineReferenceDesc>
        <ExplanationTxt>SCHEDULE D, PART X, LINE 2 THE SCHOOL IS EXEMPT FROM FEDERAL INCOME TAXES UNDER SECTION 501(A) OF THE INTERNAL REVENUE CODE (IRC) OF 1986, AS AMENDED, AS AN ORGANIZATION DESCRIBED IN SECTION 501(C)(3) OF THE IRC AS EVIDENCED BY ITS DETERMINATION LETTER DATED MARCH 1953. THE SCHOOL HAS BEEN CLASSIFIED AS AN ORGANIZATION THAT IS NOT A PRIVATE FOUNDATION UNDER IRC SECTION 509(A)(1) AND, AS SUCH, CONTRIBUTIONS TO THE SCHOOL QUALIFY FOR DEDUCTION AS CHARITABLE CONTRIBUTIONS PURSUANT TO IRC SECTION 170(A)(1). HOWEVER, INCOME GENERATED FROM ACTIVITIES UNRELATED TO THE SCHOOLS EXEMPT PURPOSE IS SUBJECT TO TAX UNDER IRC SECTION 511. THE SCHOOL DID NOT HAVE ANY MATERIAL UNRELATED BUSINESS INCOME OR RELATED TAX LIABILITY FOR THE YEARS ENDED JUNE 30, 2018 AND 2017. THE SCHOOL HAS CONCLUDED THAT IT DOES NOT HAVE ANY UNRECOGNIZED TAX BENEFITS RESULTING FROM CURRENT OR PRIOR PERIOD TAX POSITIONS. ACCORDINGLY, NO ADDITIONAL DISCLOSURES HAVE BEEN MADE ON THE FINANCIAL STATEMENTS REGARDING UNCERTAIN TAX POSITIONS. THE SCHOOL DOES NOT HAVE ANY OUTSTANDING INTEREST OR PENALTIES, AND NONE HAVE BEEN RECORDED IN THE STATEMENT OF ACTIVITIES FOR THE YEARS ENDED JUNE 30, 2018 AND 2017. AS OF JUNE 30, 2018, THE TAX YEARS THAT REMAIN SUJECT TO EXAMINATION BY THE MAJOR TAX JURISDICTIONS UNDER THE STATUE OF LIMITATIONS FOR THE SCHOOL ARE FROM THE YEAR ENDED JUNE 30, 2015 AND FORWARD.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>RECONCILIATION OF REVENUE</FormAndLineReferenceDesc>
        <ExplanationTxt>SCHEDULE D, PART XI, LINE 2D UNCOLLECTIBLE WRITE-OFFS $ (31,967) SCHEDULE D, PART XI, LINE 4B TUITION REPORTED NET ON FINANCIALS $5,767,983 COST OF GOODS SOLD $ (246,720) RENTAL EXPENSE $ ( 11,829) DISPOSAL OF ASSETS $ 10,000 ------------ TOTAL $5,519,434</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>RECONCILIATION OF EXPENSES</FormAndLineReferenceDesc>
        <ExplanationTxt>SCHEDULE D, PART XII, LINE 4B TUITION REPORTED NET ON FINANCIALS $5,767,983 COST OF GOODS SOLD $ (246,720) RENTAL EXPENSE $ ( 11,829) DISPOSAL OF ASSETS $ 10,000 ------------ TOTAL $5,519,434</ExplanationTxt>
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      <PlcyPblczdViaBroadcastMediaInd>true</PlcyPblczdViaBroadcastMediaInd>
      <MaintainRacialCompRecsInd>true</MaintainRacialCompRecsInd>
      <MaintainScholarshipsRecsInd>true</MaintainScholarshipsRecsInd>
      <MaintainCpyOfBrochuresEtcInd>true</MaintainCpyOfBrochuresEtcInd>
      <MaintainCpyOfAllSolInd>true</MaintainCpyOfAllSolInd>
      <DiscriminateRaceStdntsRghtsInd>false</DiscriminateRaceStdntsRghtsInd>
      <DiscriminateRaceAdmissPlcyInd>false</DiscriminateRaceAdmissPlcyInd>
      <DiscriminateRaceEmplmFcultyInd>false</DiscriminateRaceEmplmFcultyInd>
      <DiscriminateRaceSchsInd>false</DiscriminateRaceSchsInd>
      <DiscriminateRaceEducPlcyInd>false</DiscriminateRaceEducPlcyInd>
      <DiscriminateRaceUseOfFcltsInd>false</DiscriminateRaceUseOfFcltsInd>
      <DiscriminateRaceAthltProgInd>false</DiscriminateRaceAthltProgInd>
      <DiscriminateRaceOtherActyInd>false</DiscriminateRaceOtherActyInd>
      <GovernmentFinancialAidRcvdInd>false</GovernmentFinancialAidRcvdInd>
      <GovernmentFinancialAidRvkdInd>false</GovernmentFinancialAidRvkdInd>
      <ComplianceWithRevProc7550Ind>true</ComplianceWithRevProc7550Ind>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE E, PART I, LINE 3</FormAndLineReferenceDesc>
        <ExplanationTxt>ALL MEDIA ADVERTISEMENTS INCLUDE A STATEMENT REGARDING THE SCHOOL'S NONDISCRIMINATORY POLICY. AT A MINIMUM, A YEARLY ADVERTISEMENT IS MADE IN THE DALLAS MORNING NEWS.</ExplanationTxt>
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        <TypeOfActivitiesConductedTxt>Investments</TypeOfActivitiesConductedTxt>
        <RegionTotalExpendituresAmt>0</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <SubtotalSpentAmt>0</SubtotalSpentAmt>
      <TotalSpentAmt>0</TotalSpentAmt>
      <TransferToForeignCorpInd>true</TransferToForeignCorpInd>
      <InterestInForeignTrustInd>false</InterestInForeignTrustInd>
      <ForeignCorpOwnershipInd>false</ForeignCorpOwnershipInd>
      <PassiveForeignInvestmestCoInd>false</PassiveForeignInvestmestCoInd>
      <ForeignPartnershipInd>true</ForeignPartnershipInd>
      <BoycottCountriesInd>false</BoycottCountriesInd>
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        <GrossReceiptsEvent1Amt>512820</GrossReceiptsEvent1Amt>
        <CharitableContriEvent1Amt>107750</CharitableContriEvent1Amt>
        <GrossRevenueEvent1Amt>405070</GrossRevenueEvent1Amt>
        <RentFacilityCostsEvent1Amt>128191</RentFacilityCostsEvent1Amt>
        <FoodAndBeverageEvent1Amt>36132</FoodAndBeverageEvent1Amt>
        <EntertainmentEvent1Amt>342492</EntertainmentEvent1Amt>
        <OtherDirectExpensesEvent1Amt>51811</OtherDirectExpensesEvent1Amt>
        <OtherEventsTotalCnt>0</OtherEventsTotalCnt>
        <GrossReceiptsTotalAmt>512820</GrossReceiptsTotalAmt>
        <CharitableContributionsTotAmt>107750</CharitableContributionsTotAmt>
        <GrossRevenueTotalEventsAmt>405070</GrossRevenueTotalEventsAmt>
        <RentFcltyCostsTotalEventsAmt>128191</RentFcltyCostsTotalEventsAmt>
        <FoodAndBeverageTotalEventsAmt>36132</FoodAndBeverageTotalEventsAmt>
        <EntertainmentTotalEventsAmt>342492</EntertainmentTotalEventsAmt>
        <OthDirectExpnssTotalEventsAmt>51811</OthDirectExpnssTotalEventsAmt>
        <DirectExpenseSummaryEventsAmt>558626</DirectExpenseSummaryEventsAmt>
        <NetIncomeSummaryAmt>-153556</NetIncomeSummaryAmt>
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        <GrossRevenueOtherGamingAmt>91648</GrossRevenueOtherGamingAmt>
        <NonCashPrizesOtherGamingAmt>43900</NonCashPrizesOtherGamingAmt>
        <OthDirectExpnssOtherGamingAmt>1942</OthDirectExpnssOtherGamingAmt>
        <VolunteerLaborOtherGamingInd>true</VolunteerLaborOtherGamingInd>
        <VolunteerLaborOtherGamingPct>1.00000</VolunteerLaborOtherGamingPct>
        <GrossRevenueTotalGamingAmt>91648</GrossRevenueTotalGamingAmt>
        <NonCashPrizesTotalGamingAmt>43900</NonCashPrizesTotalGamingAmt>
        <OthDirectExpnssTotalGamingAmt>1942</OthDirectExpnssTotalGamingAmt>
        <DirectExpenseSummaryGamingAmt>45842</DirectExpenseSummaryGamingAmt>
        <NetGamingIncomeSummaryAmt>45806</NetGamingIncomeSummaryAmt>
      </GamingInformationGrp>
      <StatesWhereGamingConductedCd>TX</StatesWhereGamingConductedCd>
      <LicensedInd>false</LicensedInd>
      <ExplanationIfNoTxt>THE ONLY GAMING ACTIVITIES OF GREENHILL SCHOOL ARE RAFFLES GOVERNED BY THE TEXAS CHARITABLE ENABLING ACT. THE SCHOOL ADHERES TO THIS ACT.</ExplanationIfNoTxt>
      <LicenseSuspendedEtcInd>false</LicenseSuspendedEtcInd>
      <GamingWithNonmembersInd>true</GamingWithNonmembersInd>
      <MemberOfOtherEntityInd>false</MemberOfOtherEntityInd>
      <GamingOwnFacilityPct>1.00000</GamingOwnFacilityPct>
      <IndividualWithBooksNm>Brent Wheelis</IndividualWithBooksNm>
      <PersonsWithBooksUSAddress>
        <AddressLine1Txt>4141 Spring Valley Rd</AddressLine1Txt>
        <CityNm>Addison</CityNm>
        <StateAbbreviationCd>TX</StateAbbreviationCd>
        <ZIPCd>75001</ZIPCd>
      </PersonsWithBooksUSAddress>
      <CntrctWith3rdPrtyForGameRevInd>false</CntrctWith3rdPrtyForGameRevInd>
      <GamingManagerPersonNm>Theresa Jones</GamingManagerPersonNm>
      <GamingManagerServicesProvTxt>Supervision of raffle ticket sales/prize awarding</GamingManagerServicesProvTxt>
      <GamingManagerIsEmployeeInd>X</GamingManagerIsEmployeeInd>
      <CharitableDistributionRqrInd>false</CharitableDistributionRqrInd>
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      <GrantsOtherAsstToIndivInUSGrp>
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        <RecipientCnt>228</RecipientCnt>
        <CashGrantAmt>0</CashGrantAmt>
        <NonCashAssistanceAmt>4512491</NonCashAssistanceAmt>
        <ValuationMethodUsedDesc>FMV</ValuationMethodUsedDesc>
        <NonCashAssistanceDesc>TUITION</NonCashAssistanceDesc>
      </GrantsOtherAsstToIndivInUSGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>MONITORING THE USE OF GRANT FUNDS IN THE U.S.</FormAndLineReferenceDesc>
        <ExplanationTxt>SCHEDULE I, PART I, LINE 2 ALL GRANTS ARE PROVIDED AS A DISCOUNT TO THE TUITION THAT IS BILLED TO EACH FAMILY. CASH IS NOT PROVIDED TO THE GRANTEE.</ExplanationTxt>
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      <SubstantiationRequiredInd>true</SubstantiationRequiredInd>
      <CompensationCommitteeInd>X</CompensationCommitteeInd>
      <Form990OfOtherOrganizationsInd>X</Form990OfOtherOrganizationsInd>
      <CompensationSurveyInd>X</CompensationSurveyInd>
      <BoardOrCommitteeApprovalInd>X</BoardOrCommitteeApprovalInd>
      <SeverancePaymentInd>false</SeverancePaymentInd>
      <SupplementalNonqualRtrPlanInd>true</SupplementalNonqualRtrPlanInd>
      <EquityBasedCompArrngmInd>false</EquityBasedCompArrngmInd>
      <CompBasedOnRevenueOfFlngOrgInd>false</CompBasedOnRevenueOfFlngOrgInd>
      <CompBsdOnRevRelatedOrgsInd>false</CompBsdOnRevRelatedOrgsInd>
      <CompBsdNetEarnsFlngOrgInd>false</CompBsdNetEarnsFlngOrgInd>
      <CompBsdNetEarnsRltdOrgsInd>false</CompBsdNetEarnsRltdOrgsInd>
      <AnyNonFixedPaymentsInd>false</AnyNonFixedPaymentsInd>
      <InitialContractExceptionInd>false</InitialContractExceptionInd>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Scott Griggs</PersonNm>
        <TitleTxt>Head of School</TitleTxt>
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        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>459613</OtherCompensationFilingOrgAmt>
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        <DeferredCompensationFlngOrgAmt>130712</DeferredCompensationFlngOrgAmt>
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        <NontaxableBenefitsFilingOrgAmt>11600</NontaxableBenefitsFilingOrgAmt>
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        <TotalCompensationFilingOrgAmt>1090325</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
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        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Melissa Orth</PersonNm>
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        <OtherCompensationFilingOrgAmt>5945</OtherCompensationFilingOrgAmt>
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        <DeferredCompensationFlngOrgAmt>14502</DeferredCompensationFlngOrgAmt>
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        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
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        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Julie Diaz</PersonNm>
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        <DeferredCompensationFlngOrgAmt>9870</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>3794</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>219927</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Michael Simpson</PersonNm>
        <TitleTxt>Head of Lower School</TitleTxt>
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        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>220</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>44715</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>8650</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>72068</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>284003</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Susan Palmer</PersonNm>
        <TitleTxt>Head of Middle School</TitleTxt>
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        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
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        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>11508</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>10237</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>177250</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
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        <PersonNm>Chad Wabrek</PersonNm>
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        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
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        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>4755</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>7163</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>31703</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>187089</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Trevor Worcester</PersonNm>
        <TitleTxt>Head of upper school</TitleTxt>
        <BaseCompensationFilingOrgAmt>142066</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>218</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>3800</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>9520</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>32037</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>187641</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>HOUSING ALLOWANCE</FormAndLineReferenceDesc>
        <ExplanationTxt>SCHEDULE J, PART I, LINE 1A THE HEAD OF SCHOOL RECEIVES A HOUSING ALLOWANCE; AMOUNTS ARE REPORTED AS TAXABLE COMPENSATION. THE HOUSING ALLOWANCE FOR CALENDAR 2017 WAS $50,000.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SUPPLEMENTAL NONQUALIFIED RETIREMENT PLAN</FormAndLineReferenceDesc>
        <ExplanationTxt>SCHEDULE J, PART I, LINE 4B CONTRIBUTIONS OF $100,000 WERE MADE TO A 457(F) PLAN FOR THE HEAD OF SCHOOL. INDIVIDUALS BECAME VESTED IN THE BALANCE OF PLAN AS OF 6/30/14 AND THE BALANCE IS PAID OUT OVER THE FOLLOWING THREE FISCAL YEARS.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleJ>
    <IRS990ScheduleL documentId="IRS990ScheduleL">
      <BusTrInvolveInterestedPrsnGrp>
        <NameOfInterested>
          <PersonNm>Nathaniel Reid-Griggs</PersonNm>
        </NameOfInterested>
        <RelationshipDescriptionTxt>Family member of officer</RelationshipDescriptionTxt>
        <TransactionAmt>57900</TransactionAmt>
        <TransactionDesc>Compensation to Employee</TransactionDesc>
        <SharingOfRevenuesInd>false</SharingOfRevenuesInd>
      </BusTrInvolveInterestedPrsnGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Business Transactions Involving Interested Persons</FormAndLineReferenceDesc>
        <ExplanationTxt>Schedule L, Part IV The above business transactions involving interested persons are provided to Greenhill School at or below fair value and are in the normal course of business. All decisions to enter into these transactions were reviewed in accordance with our conflict of interest policy and the interested persons were excluded from the decision making process.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleL>
    <IRS990ScheduleM documentId="IRS990ScheduleM">
      <WorksOfArtGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <ContributionCnt>8</ContributionCnt>
        <NoncashContributionsRptF990Amt>7215</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FMV</MethodOfDeterminingRevenuesTxt>
      </WorksOfArtGrp>
      <ArtHistoricalTreasuresGrp />
      <ArtFractionalInterestGrp />
      <BooksAndPublicationsGrp />
      <ClothingAndHouseholdGoodsGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <NoncashContributionsRptF990Amt>15479</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FMV</MethodOfDeterminingRevenuesTxt>
      </ClothingAndHouseholdGoodsGrp>
      <CarsAndOtherVehiclesGrp />
      <BoatsAndPlanesGrp />
      <IntellectualPropertyGrp />
      <SecuritiesPubliclyTradedGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <ContributionCnt>22</ContributionCnt>
        <NoncashContributionsRptF990Amt>254805</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FMV</MethodOfDeterminingRevenuesTxt>
      </SecuritiesPubliclyTradedGrp>
      <SecuritiesCloselyHeldStockGrp />
      <SecurPrtnrshpTrustIntrstsGrp />
      <SecuritiesMiscellaneousGrp />
      <QualifiedContribHistStructGrp />
      <QualifiedContribOtherGrp />
      <RealEstateResidentialGrp />
      <RealEstateCommercialGrp />
      <RealEstateOtherGrp />
      <CollectiblesGrp />
      <FoodInventoryGrp />
      <DrugsAndMedicalSuppliesGrp />
      <TaxidermyGrp />
      <HistoricalArtifactsGrp />
      <ScientificSpecimensGrp />
      <ArchaeologicalArtifactsGrp />
      <OtherNonCashContriTableGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <Desc>Meals and entertainment</Desc>
        <ContributionCnt>34</ContributionCnt>
        <NoncashContributionsRptF990Amt>43867</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FMV</MethodOfDeterminingRevenuesTxt>
      </OtherNonCashContriTableGrp>
      <OtherNonCashContriTableGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <Desc>Travel/Trips</Desc>
        <ContributionCnt>15</ContributionCnt>
        <NoncashContributionsRptF990Amt>82404</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FMV</MethodOfDeterminingRevenuesTxt>
      </OtherNonCashContriTableGrp>
      <AnyPropertyThatMustBeHeldInd>false</AnyPropertyThatMustBeHeldInd>
      <ReviewProcessUnusualNCGiftsInd>true</ReviewProcessUnusualNCGiftsInd>
      <ThirdPartiesUsedInd>false</ThirdPartiesUsedInd>
    </IRS990ScheduleM>
    <IRS990ScheduleO documentId="IRS990ScheduleO">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>EXECUTIVE COMMITTEE</FormAndLineReferenceDesc>
        <ExplanationTxt>FORM 990, PART VI, SECTION A, LINE 1A PER ARTICLE V, SECTION 5.1 OF THE ORGANIZATION'S BYLAWS, THE EXECUTIVE COMMITTEE SHALL BE COMPRISED OF UP TO FOURTEEN TRUSTEES, INCLUDING THE CHAIR, THE CHAIR-ELECT, THE SECRETARY/ASSISTANT CHAIR, THE TREASURER, THE CHAIRPERSONS OF ALL COMMITTEES, AND AT-LARGE MEMBERS NOMINATED BY THE CHAIR AT HIS OR HER DISCRETION. THE EXECUTIVE COMMITTEE SHALL HAVE AND EXERCISE ALL POWER AND AUTHORITY VESTED IN THE BOARD IN THE MANAGEMENT OF THE BUSINESS, PROPERTY, AND AFFAIRS OF THE ORGANIZATION (INCLUDING, WITHOUT LIMITATION, THE ADOPTION OF ADVISORY POLICIES WITH RESPECT TO THE MANAGEMENT AND OPERATIONS OF THE ORGANIZATION), EXCEPT IN RESPECT OF REMOVAL OR ELECTION OF TRUSTEES AND OFFICERS OF THE CORPORATION AND AMENDMENT OF THE BYLAWS, AND SHALL HAVE SUCH OTHER POWER AND AUTHORITY AS SHALL BE EXPRESSLY DELEGATED TO IT BY THE BOARD BY THE AFFIRMATIVE VOTE OF A MAJORITY OF THE TRUSTEES THEN IN OFFICE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990 REVIEW</FormAndLineReferenceDesc>
        <ExplanationTxt>FORM 990, PART VI, SECTION B, LINE 11B THE DRAFT FORMS 990 AND 990-T ARE REVIEWED AND APPROVED BY THE AUDIT AND RISK MANAGEMENT COMMITTEE PRIOR TO FILING. THE FORMS 990 AND 990-T ARE ALSO MADE AVAILABLE TO THE ENTIRE BOARD VIA SECURE EMAIL PRIOR TO FILING.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>CONFLICT OF INTEREST POLICY</FormAndLineReferenceDesc>
        <ExplanationTxt>FORM 990, PART VI, SECTION B, LINE 12C THE POLICY IS DISTRIBUTED AT THE BEGINNING OF EACH YEAR TO ALL BOARD MEMBERS, AS WELL AS ALL EMPLOYEES WITH PURCHASING RESPONSIBILITY. THE POLICY IS INCLUDED IN THE BOARD OF TRUSTEES MANUAL AND THE EMPLOYEE POLICIES AND PROCEDURES MANUAL. THE POLICY REQUIRES THE DISCLOSURE OF ANY COMPENSATION RECEIVED FROM THE ORGANIZATION AND ANY RELATIONSHIPS WITH RELATED PARTIES (REPORTED IN FORM 990, PART VI AND SCHEDULE O). AT EACH COMMITTEE AND BOARD MEETING, MEMBERS ARE EXPECTED TO COMPLY WITH THE POLICY. ANY BOARD MEMBERS WITH A POTENTIAL CONFLICT OF INTEREST ARE EXPECTED TO RECUSE THEMSELVES FROM ANY RELEVANT ISSUE AND THE RECUSAL IS REFLECTED IN THE MINUTES OF THAT MEETING. IF THAT MATTER INVOLVES AN ADMINISTRATOR, FACULTY MEMBER OR OTHER EMPLOYEE, HE OR SHE SHOULD ADVISE THE HEAD OF SCHOOL. IF THE MATTER INVOLVES THE CHAIR OF THE BOARD, HE OR SHE SHOULD ADVISE THE CHAIR OF THE AUDIT AND RISK MANAGEMENT COMMITTEE. THE CHAIR OF THE BOARD, THE HEAD OF SCHOOL, OR THE CHAIR OF THE AUDIT AND RISK MANAGEMENT COMMITTEE, AS THE CASE MAY BE, SHOULD THEN CONSULT WITH SUCH PERSONS, PROVIDE SUCH GUIDANCE AND TAKE SUCH ACTION AS HE, SHE, OR IT CONSIDERS APPROPRIATE TO ADDRESS THE MATTER.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>COMPENSATION DETERMINATION</FormAndLineReferenceDesc>
        <ExplanationTxt>FORM 990, PART VI, SECTION B, LINES 15A AND 15B THE HEAD OF SCHOOL'S COMPENSATION IS OUTLINED IN HIS CONTRACT. WHEN THE CONTRACT IS UP FOR RENEWAL, THE COMPENSATION COMMITTEE BENCHMARKS THE COMPENSATION AGAINST OTHER SCHOOLS AND OUTLINES EACH YEAR'S COMPENSATION IN THE CONTRACT. THE CFO/COO'S COMPENSATION IS BASED UPON EXPERIENCE, THE CFO/COO RECEIVES THE MERIT INCREASE FOR ADMINISTRATORS AS ESTABLISHED ANNUALLY BY THE BOARD. BOTH THE HEAD OF SCHOOL AND CFO/COO'S COMPENSATIONS ARE ADDITIONALLY REVIEWED EACH YEAR BY THE AUDIT AND RISK MANAGEMENT COMMITTEE IN COMPLIANCE WITH INTERMEDIATE SANCTION REGULATIONS AND ALL DECISIONS ARE CONTEMPORANEOUSLY DOCUMENTED.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>GOVERNING DOCUMENTS</FormAndLineReferenceDesc>
        <ExplanationTxt>FORM 990, PART VI, SECTION C, LINE 19 THE ORGANIZATION'S GOVERNING DOCUMENTS, CONFLICT OF INTEREST POLICY, AND FINANCIAL STATEMENTS ARE AVAILABLE TO THE GREENHILL COMMUNITY (EMPLOYEES, VOLUNTEER LEADERSHIP, TRUSTEES) BUT NOT TO THE GENERAL PUBLIC OUTSIDE THE SCHOOL COMMUNITY. SUMMARIZED FINANCIAL INFORMATION IS INCLUDED IN THE ANNUAL REPORT.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>OTHER CHANGES IN NET ASSETS AND FUND BALANCES</FormAndLineReferenceDesc>
        <ExplanationTxt>FORM 990, PART XI, LINE 9 UNCOLLECTIBLE WRITE-OFFS $(31,967)</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>AUDIT AND RISK MANAGEMENT COMMITTEE</FormAndLineReferenceDesc>
        <ExplanationTxt>FORM 990, PART XII, LINE 2C GREENHILL SCHOOL HAS AN AUDIT AND RISK MANAGEMENT COMMITTEE THAT ASSUMES RESPONSIBILITY FOR OVERSIGHT OF THE ANNUAL FINANCIAL STATEMENT AUDIT AND THE RESULTING FINANCIAL STATEMENTS. THE AUDIT AND RISK MANAGEMENT COMMITTEE IS ALSO RESPONSIBLE FOR ASSESSING AND SELECTING THE EXTERNAL AUDIT FIRM OF GREENHILL SCHOOL. GREENHILL SCHOOL DID NOT CHANGE ITS OVERSIGHT OR SELECTION PROCESS FOR THE APPOINTMENT OF THE EXTERNAL AUDIT FIRM DURING THE TAX YEAR CURRENTLY REPORTED ON.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>