﻿<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.irs.gov/efile" returnVersion="2016v3.0">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2018-05-15T21:10:56-05:00</ReturnTs>
    <TaxPeriodEndDt>2017-06-30</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmEIN>272001590</PreparerFirmEIN>
      <PreparerFirmName>
        <BusinessNameLine1Txt>J Miller &amp; Associates LLC</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>1617 John F Kennedy Blvd Suite 1010</AddressLine1Txt>
        <CityNm>Philadelphia</CityNm>
        <StateAbbreviationCd>PA</StateAbbreviationCd>
        <ZIPCd>19103</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990</ReturnTypeCd>
    <TaxPeriodBeginDt>2016-07-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>205593485</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>Mastery Charter Schools Foundation</BusinessNameLine1Txt>
      </BusinessName>
      <BusinessNameControlTxt>MAST</BusinessNameControlTxt>
      <PhoneNum>2159221902</PhoneNum>
      <USAddress>
        <AddressLine1Txt>5700 Wayne Avenue</AddressLine1Txt>
        <CityNm>Philadelphia</CityNm>
        <StateAbbreviationCd>PA</StateAbbreviationCd>
        <ZIPCd>19144</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>Stephen Cohn</PersonNm>
      <PersonTitleTxt>President</PersonTitleTxt>
      <PhoneNum>2159221902</PhoneNum>
      <SignatureDt>2018-05-15</SignatureDt>
    </BusinessOfficerGrp>
    <PreparerPersonGrp>
      <PreparerPersonNm>Joyce Miller</PreparerPersonNm>
      <PTIN>P00047160</PTIN>
      <PhoneNum>2156001701</PhoneNum>
      <PreparationDt>2018-05-15</PreparationDt>
    </PreparerPersonGrp>
    <TaxYr>2016</TaxYr>
    <BuildTS>2022-09-23 18:48:47Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="7">
    <IRS990 documentId="RetDoc1038000001" referenceDocumentId="RetDoc1044400001">
      <PrincipalOfficerNm>Stephen Cohn</PrincipalOfficerNm>
      <USAddress>
        <AddressLine1Txt>5700 Wayne Avenue</AddressLine1Txt>
        <CityNm>Philadelphia</CityNm>
        <StateAbbreviationCd>PA</StateAbbreviationCd>
        <ZIPCd>19144</ZIPCd>
      </USAddress>
      <GrossReceiptsAmt>14063508</GrossReceiptsAmt>
      <GroupReturnForAffiliatesInd>0</GroupReturnForAffiliatesInd>
      <Organization501c3Ind>X</Organization501c3Ind>
      <WebsiteAddressTxt>www.masterycharter.org</WebsiteAddressTxt>
      <TypeOfOrganizationCorpInd>X</TypeOfOrganizationCorpInd>
      <FormationYr>2006</FormationYr>
      <LegalDomicileStateCd>PA</LegalDomicileStateCd>
      <ActivityOrMissionDesc>To develop and provide financial support for the Mastery network of charter schools.</ActivityOrMissionDesc>
      <VotingMembersGoverningBodyCnt>3</VotingMembersGoverningBodyCnt>
      <VotingMembersIndependentCnt>3</VotingMembersIndependentCnt>
      <TotalEmployeeCnt>0</TotalEmployeeCnt>
      <TotalVolunteersCnt>3</TotalVolunteersCnt>
      <TotalGrossUBIAmt>0</TotalGrossUBIAmt>
      <NetUnrelatedBusTxblIncmAmt>0</NetUnrelatedBusTxblIncmAmt>
      <PYContributionsGrantsAmt>4466134</PYContributionsGrantsAmt>
      <CYContributionsGrantsAmt>11113275</CYContributionsGrantsAmt>
      <PYProgramServiceRevenueAmt>0</PYProgramServiceRevenueAmt>
      <CYProgramServiceRevenueAmt>0</CYProgramServiceRevenueAmt>
      <PYInvestmentIncomeAmt>1170276</PYInvestmentIncomeAmt>
      <CYInvestmentIncomeAmt>2618637</CYInvestmentIncomeAmt>
      <PYOtherRevenueAmt>264122</PYOtherRevenueAmt>
      <CYOtherRevenueAmt>107602</CYOtherRevenueAmt>
      <PYTotalRevenueAmt>5900532</PYTotalRevenueAmt>
      <CYTotalRevenueAmt>13839514</CYTotalRevenueAmt>
      <PYGrantsAndSimilarPaidAmt>6894654</PYGrantsAndSimilarPaidAmt>
      <CYGrantsAndSimilarPaidAmt>6290041</CYGrantsAndSimilarPaidAmt>
      <PYBenefitsPaidToMembersAmt>0</PYBenefitsPaidToMembersAmt>
      <CYBenefitsPaidToMembersAmt>0</CYBenefitsPaidToMembersAmt>
      <PYSalariesCompEmpBnftPaidAmt>0</PYSalariesCompEmpBnftPaidAmt>
      <CYSalariesCompEmpBnftPaidAmt>0</CYSalariesCompEmpBnftPaidAmt>
      <PYTotalProfFndrsngExpnsAmt>0</PYTotalProfFndrsngExpnsAmt>
      <CYTotalProfFndrsngExpnsAmt>0</CYTotalProfFndrsngExpnsAmt>
      <CYTotalFundraisingExpenseAmt>2179</CYTotalFundraisingExpenseAmt>
      <PYOtherExpensesAmt>1488881</PYOtherExpensesAmt>
      <CYOtherExpensesAmt>1476783</CYOtherExpensesAmt>
      <PYTotalExpensesAmt>8383535</PYTotalExpensesAmt>
      <CYTotalExpensesAmt>7766824</CYTotalExpensesAmt>
      <PYRevenuesLessExpensesAmt>-2483003</PYRevenuesLessExpensesAmt>
      <CYRevenuesLessExpensesAmt>6072690</CYRevenuesLessExpensesAmt>
      <TotalAssetsBOYAmt>58317612</TotalAssetsBOYAmt>
      <TotalAssetsEOYAmt>102203851</TotalAssetsEOYAmt>
      <TotalLiabilitiesBOYAmt>39267679</TotalLiabilitiesBOYAmt>
      <TotalLiabilitiesEOYAmt>77081228</TotalLiabilitiesEOYAmt>
      <NetAssetsOrFundBalancesBOYAmt>19049933</NetAssetsOrFundBalancesBOYAmt>
      <NetAssetsOrFundBalancesEOYAmt>25122623</NetAssetsOrFundBalancesEOYAmt>
      <MissionDesc>Mastery Charter Schools Foundation is a nonprofit charitable foundation organized to develop and provide support to Mastery Charter Schools' educational programs in Philadelphia, PA and Camden, NJ</MissionDesc>
      <SignificantNewProgramSrvcInd>0</SignificantNewProgramSrvcInd>
      <SignificantChangeInd>0</SignificantChangeInd>
      <ExpenseAmt>7684616</ExpenseAmt>
      <GrantAmt>6290041</GrantAmt>
      <Desc>Mastery Charter Schools Foundation will drive educational reform by supporting the academic and operational programs of Mastery Charter Schools.</Desc>
      <TotalProgramServiceExpensesAmt>7684616</TotalProgramServiceExpensesAmt>
      <DescribedInSection501c3Ind referenceDocumentId="RetDoc1039100001">1</DescribedInSection501c3Ind>
      <ScheduleBRequiredInd referenceDocumentId="RetDoc1234500001">1</ScheduleBRequiredInd>
      <PoliticalCampaignActyInd>0</PoliticalCampaignActyInd>
      <LobbyingActivitiesInd>0</LobbyingActivitiesInd>
      <SubjectToProxyTaxInd>0</SubjectToProxyTaxInd>
      <DonorAdvisedFundInd referenceDocumentId="RetDoc1040000001">0</DonorAdvisedFundInd>
      <ConservationEasementsInd referenceDocumentId="RetDoc1040000001">0</ConservationEasementsInd>
      <CollectionsOfArtInd referenceDocumentId="RetDoc1040000001">0</CollectionsOfArtInd>
      <CreditCounselingInd referenceDocumentId="RetDoc1040000001">0</CreditCounselingInd>
      <TempOrPermanentEndowmentsInd referenceDocumentId="RetDoc1040000001">0</TempOrPermanentEndowmentsInd>
      <ReportLandBuildingEquipmentInd referenceDocumentId="RetDoc1040000001">1</ReportLandBuildingEquipmentInd>
      <ReportInvestmentsOtherSecInd referenceDocumentId="RetDoc1040000001">0</ReportInvestmentsOtherSecInd>
      <ReportProgramRelatedInvstInd referenceDocumentId="RetDoc1040000001">0</ReportProgramRelatedInvstInd>
      <ReportOtherAssetsInd referenceDocumentId="RetDoc1040000001">1</ReportOtherAssetsInd>
      <ReportOtherLiabilitiesInd referenceDocumentId="RetDoc1040000001">1</ReportOtherLiabilitiesInd>
      <IncludeFIN48FootnoteInd referenceDocumentId="RetDoc1040000001">0</IncludeFIN48FootnoteInd>
      <IndependentAuditFinclStmtInd referenceDocumentId="RetDoc1040000001">0</IndependentAuditFinclStmtInd>
      <ConsolidatedAuditFinclStmtInd referenceDocumentId="RetDoc1040000001">0</ConsolidatedAuditFinclStmtInd>
      <SchoolOperatingInd>0</SchoolOperatingInd>
      <ForeignOfficeInd>0</ForeignOfficeInd>
      <ForeignActivitiesInd>0</ForeignActivitiesInd>
      <MoreThan5000KToOrgInd>0</MoreThan5000KToOrgInd>
      <MoreThan5000KToIndividualsInd>0</MoreThan5000KToIndividualsInd>
      <ProfessionalFundraisingInd>0</ProfessionalFundraisingInd>
      <FundraisingActivitiesInd>0</FundraisingActivitiesInd>
      <GamingActivitiesInd>0</GamingActivitiesInd>
      <OperateHospitalInd>0</OperateHospitalInd>
      <GrantsToOrganizationsInd referenceDocumentId="RetDoc1041900001">1</GrantsToOrganizationsInd>
      <GrantsToIndividualsInd referenceDocumentId="RetDoc1041900001">1</GrantsToIndividualsInd>
      <ScheduleJRequiredInd>0</ScheduleJRequiredInd>
      <TaxExemptBondsInd>0</TaxExemptBondsInd>
      <EngagedInExcessBenefitTransInd>0</EngagedInExcessBenefitTransInd>
      <PYExcessBenefitTransInd>0</PYExcessBenefitTransInd>
      <LoanOutstandingInd>0</LoanOutstandingInd>
      <GrantToRelatedPersonInd>0</GrantToRelatedPersonInd>
      <BusinessRlnWithOrgMemInd>0</BusinessRlnWithOrgMemInd>
      <BusinessRlnWithFamMemInd>0</BusinessRlnWithFamMemInd>
      <BusinessRlnWithOfficerEntInd>0</BusinessRlnWithOfficerEntInd>
      <DeductibleNonCashContriInd>0</DeductibleNonCashContriInd>
      <DeductibleArtContributionInd>0</DeductibleArtContributionInd>
      <TerminateOperationsInd>0</TerminateOperationsInd>
      <PartialLiquidationInd>0</PartialLiquidationInd>
      <DisregardedEntityInd referenceDocumentId="RetDoc1043400001">1</DisregardedEntityInd>
      <RelatedEntityInd referenceDocumentId="RetDoc1043400001">0</RelatedEntityInd>
      <RelatedOrganizationCtrlEntInd>0</RelatedOrganizationCtrlEntInd>
      <TrnsfrExmptNonChrtblRltdOrgInd referenceDocumentId="RetDoc1043400001">0</TrnsfrExmptNonChrtblRltdOrgInd>
      <ActivitiesConductedPrtshpInd referenceDocumentId="RetDoc1043400001">0</ActivitiesConductedPrtshpInd>
      <ScheduleORequiredInd>1</ScheduleORequiredInd>
      <IRPDocumentCnt>0</IRPDocumentCnt>
      <IRPDocumentW2GCnt>0</IRPDocumentW2GCnt>
      <EmployeeCnt>0</EmployeeCnt>
      <UnrelatedBusIncmOverLimitInd>0</UnrelatedBusIncmOverLimitInd>
      <ForeignFinancialAccountInd>0</ForeignFinancialAccountInd>
      <ProhibitedTaxShelterTransInd>0</ProhibitedTaxShelterTransInd>
      <TaxablePartyNotificationInd>0</TaxablePartyNotificationInd>
      <NondeductibleContributionsInd>0</NondeductibleContributionsInd>
      <QuidProQuoContributionsInd>0</QuidProQuoContributionsInd>
      <Form8282PropertyDisposedOfInd>0</Form8282PropertyDisposedOfInd>
      <IndoorTanningServicesInd>0</IndoorTanningServicesInd>
      <InfoInScheduleOPartVIInd>X</InfoInScheduleOPartVIInd>
      <GoverningBodyVotingMembersCnt>3</GoverningBodyVotingMembersCnt>
      <IndependentVotingMemberCnt>3</IndependentVotingMemberCnt>
      <FamilyOrBusinessRlnInd>0</FamilyOrBusinessRlnInd>
      <DelegationOfMgmtDutiesInd>0</DelegationOfMgmtDutiesInd>
      <ChangeToOrgDocumentsInd>0</ChangeToOrgDocumentsInd>
      <MaterialDiversionOrMisuseInd>0</MaterialDiversionOrMisuseInd>
      <MembersOrStockholdersInd>0</MembersOrStockholdersInd>
      <ElectionOfBoardMembersInd>0</ElectionOfBoardMembersInd>
      <DecisionsSubjectToApprovaInd>0</DecisionsSubjectToApprovaInd>
      <MinutesOfGoverningBodyInd>1</MinutesOfGoverningBodyInd>
      <MinutesOfCommitteesInd>1</MinutesOfCommitteesInd>
      <OfficerMailingAddressInd>0</OfficerMailingAddressInd>
      <LocalChaptersInd>0</LocalChaptersInd>
      <Form990ProvidedToGvrnBodyInd>1</Form990ProvidedToGvrnBodyInd>
      <ConflictOfInterestPolicyInd>1</ConflictOfInterestPolicyInd>
      <AnnualDisclosureCoveredPrsnInd>1</AnnualDisclosureCoveredPrsnInd>
      <RegularMonitoringEnfrcInd>1</RegularMonitoringEnfrcInd>
      <WhistleblowerPolicyInd>1</WhistleblowerPolicyInd>
      <DocumentRetentionPolicyInd>1</DocumentRetentionPolicyInd>
      <CompensationProcessCEOInd>0</CompensationProcessCEOInd>
      <CompensationProcessOtherInd>0</CompensationProcessOtherInd>
      <InvestmentInJointVentureInd>0</InvestmentInJointVentureInd>
      <StatesWhereCopyOfReturnIsFldCd>PA</StatesWhereCopyOfReturnIsFldCd>
      <StatesWhereCopyOfReturnIsFldCd>NJ</StatesWhereCopyOfReturnIsFldCd>
      <UponRequestInd>X</UponRequestInd>
      <BooksInCareOfDetail>
        <BusinessName>
          <BusinessNameLine1Txt>J Miller &amp; Associates LLC</BusinessNameLine1Txt>
        </BusinessName>
        <PhoneNum>2156001701</PhoneNum>
        <USAddress>
          <AddressLine1Txt>1617 John F Kennedy Blvd</AddressLine1Txt>
          <CityNm>Philadelphia</CityNm>
          <StateAbbreviationCd>PA</StateAbbreviationCd>
          <ZIPCd>19103</ZIPCd>
        </USAddress>
      </BooksInCareOfDetail>
      <NoListedPersonsCompensatedInd>X</NoListedPersonsCompensatedInd>
      <Form990PartVIISectionAGrp>
        <PersonNm>Stephen Cohn</PersonNm>
        <TitleTxt>President</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Edward Baumstein</PersonNm>
        <TitleTxt>Treasurer</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Brook J Lenfest</PersonNm>
        <TitleTxt>Board Member</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Courtney Collins Shapiro</PersonNm>
        <TitleTxt>Assistant Secretary</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <TotalReportableCompFromOrgAmt>0</TotalReportableCompFromOrgAmt>
      <TotReportableCompRltdOrgAmt>0</TotReportableCompRltdOrgAmt>
      <TotalOtherCompensationAmt>0</TotalOtherCompensationAmt>
      <IndivRcvdGreaterThan100KCnt>0</IndivRcvdGreaterThan100KCnt>
      <FormerOfcrEmployeesListedInd>0</FormerOfcrEmployeesListedInd>
      <TotalCompGreaterThan150KInd>0</TotalCompGreaterThan150KInd>
      <CompensationFromOtherSrcsInd>0</CompensationFromOtherSrcsInd>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>Skanska USA Building Inc</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>518 E Township Line Road</AddressLine1Txt>
            <CityNm>Blue Bell</CityNm>
            <StateAbbreviationCd>PA</StateAbbreviationCd>
            <ZIPCd>19422</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>Construction</ServicesDesc>
        <CompensationAmt>3778503</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>Metcalfe Architecture &amp; Design LLC</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>211 N 13th Street Ste 503</AddressLine1Txt>
            <CityNm>Philadelphia</CityNm>
            <StateAbbreviationCd>PA</StateAbbreviationCd>
            <ZIPCd>19107</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>Architectural services</ServicesDesc>
        <CompensationAmt>109040</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>Northstar Owners Representation</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>150 North Radnor Chester Road Ste B</AddressLine1Txt>
            <CityNm>Radnor</CityNm>
            <StateAbbreviationCd>PA</StateAbbreviationCd>
            <ZIPCd>19087</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>Construction management services</ServicesDesc>
        <CompensationAmt>108214</CompensationAmt>
      </ContractorCompensationGrp>
      <CntrctRcvdGreaterThan100KCnt>3</CntrctRcvdGreaterThan100KCnt>
      <FundraisingAmt>453485</FundraisingAmt>
      <AllOtherContributionsAmt>10659790</AllOtherContributionsAmt>
      <TotalContributionsAmt>11113275</TotalContributionsAmt>
      <InvestmentIncomeGrp>
        <TotalRevenueColumnAmt>2618637</TotalRevenueColumnAmt>
        <ExclusionAmt>2618637</ExclusionAmt>
      </InvestmentIncomeGrp>
      <GrossRentsGrp>
        <RealAmt>331440</RealAmt>
      </GrossRentsGrp>
      <LessRentalExpensesGrp>
        <RealAmt>67318</RealAmt>
      </LessRentalExpensesGrp>
      <RentalIncomeOrLossGrp>
        <RealAmt>264122</RealAmt>
      </RentalIncomeOrLossGrp>
      <NetRentalIncomeOrLossGrp>
        <TotalRevenueColumnAmt>264122</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>264122</RelatedOrExemptFuncIncomeAmt>
      </NetRentalIncomeOrLossGrp>
      <FundraisingGrossIncomeAmt>0</FundraisingGrossIncomeAmt>
      <ContriRptFundraisingEventAmt>453485</ContriRptFundraisingEventAmt>
      <FundraisingDirectExpensesAmt>156676</FundraisingDirectExpensesAmt>
      <NetIncmFromFundraisingEvtGrp>
        <TotalRevenueColumnAmt>-156676</TotalRevenueColumnAmt>
        <ExclusionAmt>-156676</ExclusionAmt>
      </NetIncmFromFundraisingEvtGrp>
      <OtherRevenueMiscGrp>
        <Desc>Miscellaneous revenue</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>156</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>156</RelatedOrExemptFuncIncomeAmt>
      </OtherRevenueMiscGrp>
      <OtherRevenueTotalAmt>156</OtherRevenueTotalAmt>
      <TotalRevenueGrp>
        <TotalRevenueColumnAmt>13839514</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>264278</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>2461961</ExclusionAmt>
      </TotalRevenueGrp>
      <GrantsToDomesticOrgsGrp>
        <TotalAmt>6275041</TotalAmt>
        <ProgramServicesAmt>6275041</ProgramServicesAmt>
      </GrantsToDomesticOrgsGrp>
      <GrantsToDomesticIndividualsGrp>
        <TotalAmt>15000</TotalAmt>
        <ProgramServicesAmt>15000</ProgramServicesAmt>
      </GrantsToDomesticIndividualsGrp>
      <FeesForServicesAccountingGrp>
        <TotalAmt>46057</TotalAmt>
        <ManagementAndGeneralAmt>46057</ManagementAndGeneralAmt>
      </FeesForServicesAccountingGrp>
      <InterestGrp>
        <TotalAmt>1418098</TotalAmt>
        <ProgramServicesAmt>1418098</ProgramServicesAmt>
      </InterestGrp>
      <InsuranceGrp>
        <TotalAmt>27092</TotalAmt>
        <ManagementAndGeneralAmt>27092</ManagementAndGeneralAmt>
      </InsuranceGrp>
      <OtherExpensesGrp>
        <Desc>Community engagement</Desc>
        <TotalAmt>10592</TotalAmt>
        <ProgramServicesAmt>10592</ProgramServicesAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>Other expenses</Desc>
        <TotalAmt>9059</TotalAmt>
        <ManagementAndGeneralAmt>6880</ManagementAndGeneralAmt>
        <FundraisingAmt>2179</FundraisingAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>Environmental remediati</Desc>
        <TotalAmt>-34115</TotalAmt>
        <ProgramServicesAmt>-34115</ProgramServicesAmt>
      </OtherExpensesGrp>
      <TotalFunctionalExpensesGrp>
        <TotalAmt>7766824</TotalAmt>
        <ProgramServicesAmt>7684616</ProgramServicesAmt>
        <ManagementAndGeneralAmt>80029</ManagementAndGeneralAmt>
        <FundraisingAmt>2179</FundraisingAmt>
      </TotalFunctionalExpensesGrp>
      <SavingsAndTempCashInvstGrp>
        <BOYAmt>14764203</BOYAmt>
        <EOYAmt>12252450</EOYAmt>
      </SavingsAndTempCashInvstGrp>
      <PledgesAndGrantsReceivableGrp>
        <BOYAmt>4381693</BOYAmt>
        <EOYAmt>7933360</EOYAmt>
      </PledgesAndGrantsReceivableGrp>
      <AccountsReceivableGrp>
        <EOYAmt>845925</EOYAmt>
      </AccountsReceivableGrp>
      <OthNotesLoansReceivableNetGrp>
        <BOYAmt>3808389</BOYAmt>
        <EOYAmt>17131826</EOYAmt>
      </OthNotesLoansReceivableNetGrp>
      <PrepaidExpensesDefrdChargesGrp>
        <BOYAmt>20034</BOYAmt>
        <EOYAmt>13171</EOYAmt>
      </PrepaidExpensesDefrdChargesGrp>
      <LandBldgEquipCostOrOtherBssAmt>7806000</LandBldgEquipCostOrOtherBssAmt>
      <LandBldgEquipAccumDeprecAmt>207564</LandBldgEquipAccumDeprecAmt>
      <LandBldgEquipBasisNetGrp>
        <BOYAmt>3459884</BOYAmt>
        <EOYAmt>7598436</EOYAmt>
      </LandBldgEquipBasisNetGrp>
      <OtherAssetsTotalGrp>
        <BOYAmt>31883409</BOYAmt>
        <EOYAmt>56428683</EOYAmt>
      </OtherAssetsTotalGrp>
      <TotalAssetsGrp>
        <BOYAmt>58317612</BOYAmt>
        <EOYAmt>102203851</EOYAmt>
      </TotalAssetsGrp>
      <AccountsPayableAccrExpnssGrp>
        <BOYAmt>413470</BOYAmt>
        <EOYAmt>2586642</EOYAmt>
      </AccountsPayableAccrExpnssGrp>
      <GrantsPayableGrp>
        <BOYAmt>559262</BOYAmt>
        <EOYAmt>762375</EOYAmt>
      </GrantsPayableGrp>
      <MortgNotesPyblScrdInvstPropGrp>
        <BOYAmt>30000000</BOYAmt>
        <EOYAmt>62055000</EOYAmt>
      </MortgNotesPyblScrdInvstPropGrp>
      <UnsecuredNotesLoansPayableGrp>
        <BOYAmt>7750000</BOYAmt>
        <EOYAmt>10900000</EOYAmt>
      </UnsecuredNotesLoansPayableGrp>
      <OtherLiabilitiesGrp>
        <BOYAmt>544947</BOYAmt>
        <EOYAmt>777211</EOYAmt>
      </OtherLiabilitiesGrp>
      <TotalLiabilitiesGrp>
        <BOYAmt>39267679</BOYAmt>
        <EOYAmt>77081228</EOYAmt>
      </TotalLiabilitiesGrp>
      <OrganizationFollowsSFAS117Ind>X</OrganizationFollowsSFAS117Ind>
      <UnrestrictedNetAssetsGrp>
        <BOYAmt>5191375</BOYAmt>
        <EOYAmt>6685552</EOYAmt>
      </UnrestrictedNetAssetsGrp>
      <TemporarilyRstrNetAssetsGrp>
        <BOYAmt>13858558</BOYAmt>
        <EOYAmt>18437071</EOYAmt>
      </TemporarilyRstrNetAssetsGrp>
      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>19049933</BOYAmt>
        <EOYAmt>25122623</EOYAmt>
      </TotalNetAssetsFundBalanceGrp>
      <TotLiabNetAssetsFundBalanceGrp>
        <BOYAmt>58317612</BOYAmt>
        <EOYAmt>102203851</EOYAmt>
      </TotLiabNetAssetsFundBalanceGrp>
      <ReconcilationRevenueExpnssAmt>6072690</ReconcilationRevenueExpnssAmt>
      <OtherChangesInNetAssetsAmt>0</OtherChangesInNetAssetsAmt>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>1</AccountantCompileOrReviewInd>
      <AcctCompileOrReviewBasisGrp>
        <ConsolidatedBasisFinclStmtInd>X</ConsolidatedBasisFinclStmtInd>
      </AcctCompileOrReviewBasisGrp>
      <FSAuditedInd>1</FSAuditedInd>
      <FSAuditedBasisGrp>
        <ConsolidatedBasisFinclStmtInd>X</ConsolidatedBasisFinclStmtInd>
      </FSAuditedBasisGrp>
      <AuditCommitteeInd>1</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>0</FederalGrantAuditRequiredInd>
    </IRS990>
    <IRS990ScheduleA documentId="RetDoc1039100001">
      <PublicOrganization170Ind>X</PublicOrganization170Ind>
      <GiftsGrantsContriRcvd170Grp>
        <CurrentTaxYearMinus4YearsAmt>3428585</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>11970151</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>8275545</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>4476134</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>9738108</CurrentTaxYearAmt>
        <TotalAmt>37888523</TotalAmt>
      </GiftsGrantsContriRcvd170Grp>
      <TotalCalendarYear170Grp>
        <CurrentTaxYearMinus4YearsAmt>3428585</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>11970151</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>8275545</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>4476134</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>9738108</CurrentTaxYearAmt>
        <TotalAmt>37888523</TotalAmt>
      </TotalCalendarYear170Grp>
      <SubstantialContributorsTotAmt>18048088</SubstantialContributorsTotAmt>
      <PublicSupportTotal170Amt>19840435</PublicSupportTotal170Amt>
      <GrossInvestmentIncome170Grp>
        <CurrentTaxYearMinus4YearsAmt>52848</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>42056</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>25048</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>1170276</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>2618637</CurrentTaxYearAmt>
        <TotalAmt>3908865</TotalAmt>
      </GrossInvestmentIncome170Grp>
      <TotalSupportAmt>41797388</TotalSupportAmt>
      <GrossReceiptsRltdActivitiesAmt>662880</GrossReceiptsRltdActivitiesAmt>
      <PublicSupportCY170Pct>0.47470</PublicSupportCY170Pct>
      <PublicSupportPY170Pct>0.63330</PublicSupportPY170Pct>
      <ThirtyThrPctSuprtTestsCY170Ind>X</ThirtyThrPctSuprtTestsCY170Ind>
    </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="RetDoc1040000001">
      <LandGrp>
        <OtherCostOrOtherBasisAmt>165000</OtherCostOrOtherBasisAmt>
        <BookValueAmt>165000</BookValueAmt>
      </LandGrp>
      <BuildingsGrp>
        <OtherCostOrOtherBasisAmt>2692720</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>207564</DepreciationAmt>
        <BookValueAmt>2485156</BookValueAmt>
      </BuildingsGrp>
      <OtherLandBuildingsGrp>
        <OtherCostOrOtherBasisAmt>4948280</OtherCostOrOtherBasisAmt>
        <BookValueAmt>4948280</BookValueAmt>
      </OtherLandBuildingsGrp>
      <TotalBookValueLandBuildingsAmt>7598436</TotalBookValueLandBuildingsAmt>
      <OtherAssetsOrgGrp>
        <Desc>Bonds receivable</Desc>
        <BookValueAmt>55000138</BookValueAmt>
      </OtherAssetsOrgGrp>
      <OtherAssetsOrgGrp>
        <Desc>Due from related parties</Desc>
        <BookValueAmt>1428545</BookValueAmt>
      </OtherAssetsOrgGrp>
      <TotalBookValueOtherAssetsAmt>56428683</TotalBookValueOtherAssetsAmt>
      <OtherLiabilitiesOrgGrp>
        <Desc>Interest payable</Desc>
        <Amt>777211</Amt>
      </OtherLiabilitiesOrgGrp>
      <TotalLiabilityAmt>777211</TotalLiabilityAmt>
      <TotalRevEtcAuditedFinclStmtAmt>14409945</TotalRevEtcAuditedFinclStmtAmt>
      <DonatedServicesAndUseFcltsAmt>346437</DonatedServicesAndUseFcltsAmt>
      <OtherRevenueAmt>223994</OtherRevenueAmt>
      <RevenueNotReportedAmt>570431</RevenueNotReportedAmt>
      <RevenueSubtotalAmt>13839514</RevenueSubtotalAmt>
      <RevenueNotReportedFinclStmtAmt>0</RevenueNotReportedFinclStmtAmt>
      <TotalRevenuePerForm990Amt>13839514</TotalRevenuePerForm990Amt>
      <TotExpnsEtcAuditedFinclStmtAmt>8337255</TotExpnsEtcAuditedFinclStmtAmt>
      <DonatedServicesUseFcltsAmt>346437</DonatedServicesUseFcltsAmt>
      <OtherExpensesIncludedAmt>223994</OtherExpensesIncludedAmt>
      <ExpensesNotReportedAmt>570431</ExpensesNotReportedAmt>
      <ExpensesSubtotalAmt>7766824</ExpensesSubtotalAmt>
      <ExpensesNotRptFinclStmtAmt>0</ExpensesNotRptFinclStmtAmt>
      <TotalExpensesPerForm990Amt>7766824</TotalExpensesPerForm990Amt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part XI, Line 2d - Other Adjustments:</FormAndLineReferenceDesc>
        <ExplanationTxt>Special event expenses deducted on Form 990 revenue schedule Depreciation expense deducted from rental income</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part XII, Line 2d - Other Adjustments:</FormAndLineReferenceDesc>
        <ExplanationTxt>Depreciation on Form 990 is reported net of rental income Special event expenses deducted on revenue schedule</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part X, Line 2</FormAndLineReferenceDesc>
        <ExplanationTxt>The Organization has determined that there are no uncertain tax positions which qualify for either recognition ordisclosure in the consolidated financial statements at June 30, 2016.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleI documentId="RetDoc1041900001">
      <GrantRecordsMaintainedInd>1</GrantRecordsMaintainedInd>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Mastery Charter High School</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>35 South 4th Street</AddressLine1Txt>
          <CityNm>Philadelphia</CityNm>
          <StateAbbreviationCd>PA</StateAbbreviationCd>
          <ZIPCd>19106</ZIPCd>
        </USAddress>
        <RecipientEIN>233060542</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>3092594</CashGrantAmt>
        <PurposeOfGrantTxt>Charter school support, development and expansion</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Mastery Charter School - Thomas Campus</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>927 Johnson Street</AddressLine1Txt>
          <CityNm>Philadelphia</CityNm>
          <StateAbbreviationCd>PA</StateAbbreviationCd>
          <ZIPCd>19148</ZIPCd>
        </USAddress>
        <RecipientEIN>204861191</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>140245</CashGrantAmt>
        <PurposeOfGrantTxt>Charter school support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Mastery Charter School - Shoemaker Campus</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>5301 Media Street</AddressLine1Txt>
          <CityNm>Philadelphia</CityNm>
          <StateAbbreviationCd>PA</StateAbbreviationCd>
          <ZIPCd>19131</ZIPCd>
        </USAddress>
        <RecipientEIN>204861234</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>191146</CashGrantAmt>
        <PurposeOfGrantTxt>Charter school support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Mastery Charter School - Pickett Campus</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>5700 Wayne Avenue</AddressLine1Txt>
          <CityNm>Philadelphia</CityNm>
          <StateAbbreviationCd>PA</StateAbbreviationCd>
          <ZIPCd>19144</ZIPCd>
        </USAddress>
        <RecipientEIN>651308951</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>117085</CashGrantAmt>
        <PurposeOfGrantTxt>Charter school support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Mastery Charter School - Harrity Elementary</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>5601 Christian Street</AddressLine1Txt>
          <CityNm>Philadelphia</CityNm>
          <StateAbbreviationCd>PA</StateAbbreviationCd>
          <ZIPCd>19143</ZIPCd>
        </USAddress>
        <RecipientEIN>272575445</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>88611</CashGrantAmt>
        <PurposeOfGrantTxt>Charter school support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Mastery Charter School - Mann Elementary</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>5376 West Berks Street</AddressLine1Txt>
          <CityNm>Philadelphia</CityNm>
          <StateAbbreviationCd>PA</StateAbbreviationCd>
          <ZIPCd>19131</ZIPCd>
        </USAddress>
        <RecipientEIN>272575568</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>11233</CashGrantAmt>
        <PurposeOfGrantTxt>Charter school support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Mastery Charter School - Smedley Elementary</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>1790 Bridge Street</AddressLine1Txt>
          <CityNm>Philadelphia</CityNm>
          <StateAbbreviationCd>PA</StateAbbreviationCd>
          <ZIPCd>19124</ZIPCd>
        </USAddress>
        <RecipientEIN>272575502</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>41599</CashGrantAmt>
        <PurposeOfGrantTxt>Charter school support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Hardy Williams Academy Charter School</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>1712 South 56th Street</AddressLine1Txt>
          <CityNm>Philadelphia</CityNm>
          <StateAbbreviationCd>PA</StateAbbreviationCd>
          <ZIPCd>19143</ZIPCd>
        </USAddress>
        <RecipientEIN>522173268</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>11923</CashGrantAmt>
        <PurposeOfGrantTxt>Charter school support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Mastery Charter School - Gratz Campus</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>1798 West Hunting Park Avenue</AddressLine1Txt>
          <CityNm>Philadelphia</CityNm>
          <StateAbbreviationCd>PA</StateAbbreviationCd>
          <ZIPCd>19140</ZIPCd>
        </USAddress>
        <RecipientEIN>452107493</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>122950</CashGrantAmt>
        <PurposeOfGrantTxt>Charter school support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Grover Cleveland Mastery Charter School</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>5650 Sprague Street</AddressLine1Txt>
          <CityNm>Philadelphia</CityNm>
          <StateAbbreviationCd>PA</StateAbbreviationCd>
          <ZIPCd>19138</ZIPCd>
        </USAddress>
        <RecipientEIN>462846820</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>700</CashGrantAmt>
        <PurposeOfGrantTxt>Charter school support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Mastery Charter Schools of Camden</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>1033 Cambridge Avenue</AddressLine1Txt>
          <CityNm>Camden</CityNm>
          <StateAbbreviationCd>NJ</StateAbbreviationCd>
          <ZIPCd>08105</ZIPCd>
        </USAddress>
        <RecipientEIN>465158488</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>78376</CashGrantAmt>
        <PurposeOfGrantTxt>Charter school support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Mercy Vocational High School</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>2900 W Hunting Park Avenue</AddressLine1Txt>
          <CityNm>Philadelphia</CityNm>
          <StateAbbreviationCd>PA</StateAbbreviationCd>
          <ZIPCd>19129</ZIPCd>
        </USAddress>
        <RecipientEIN>231389404</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>27060</CashGrantAmt>
        <PurposeOfGrantTxt>Scholarship support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Springside Chestnut Hill Acacdemy</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>500 West Willow Grove Avenue</AddressLine1Txt>
          <CityNm>Philadelphia</CityNm>
          <StateAbbreviationCd>PA</StateAbbreviationCd>
          <ZIPCd>19118</ZIPCd>
        </USAddress>
        <RecipientEIN>231352681</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>227000</CashGrantAmt>
        <PurposeOfGrantTxt>Scholarship support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Little Flower Catholic High School</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>1000 W Lycoming Street</AddressLine1Txt>
          <CityNm>Philadelphia</CityNm>
          <StateAbbreviationCd>PA</StateAbbreviationCd>
          <ZIPCd>19140</ZIPCd>
        </USAddress>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>44800</CashGrantAmt>
        <PurposeOfGrantTxt>Scholarship support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Francis D Pastorius Mastery Charter School</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>5650 Sprague Street</AddressLine1Txt>
          <CityNm>Philadelphia</CityNm>
          <StateAbbreviationCd>PA</StateAbbreviationCd>
          <ZIPCd>19138</ZIPCd>
        </USAddress>
        <RecipientEIN>462846820</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>236167</CashGrantAmt>
        <PurposeOfGrantTxt>Charter school support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Frederick Douglass Mastery Charter School</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>2118 W Norris Street</AddressLine1Txt>
          <CityNm>Philadelphia</CityNm>
          <StateAbbreviationCd>PA</StateAbbreviationCd>
          <ZIPCd>19121</ZIPCd>
        </USAddress>
        <RecipientEIN>800619248</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>681000</CashGrantAmt>
        <PurposeOfGrantTxt>Charter school support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Greene Street Friends School</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>5511 Greene Street</AddressLine1Txt>
          <CityNm>Philadelphia</CityNm>
          <StateAbbreviationCd>PA</StateAbbreviationCd>
          <ZIPCd>19144</ZIPCd>
        </USAddress>
        <RecipientEIN>231352643</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>182221</CashGrantAmt>
        <PurposeOfGrantTxt>Scholarship support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Mastery Charter School - Clymer Elementary</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>1201 W Rush Street</AddressLine1Txt>
          <CityNm>Philadelphia</CityNm>
          <StateAbbreviationCd>PA</StateAbbreviationCd>
          <ZIPCd>19133</ZIPCd>
        </USAddress>
        <RecipientEIN>452107667</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>21508</CashGrantAmt>
        <PurposeOfGrantTxt>Charter school support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Mastery Charter School - Wister Campus</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>67 E Bringhurst Street</AddressLine1Txt>
          <CityNm>Philadelphia</CityNm>
          <StateAbbreviationCd>PA</StateAbbreviationCd>
          <ZIPCd>19144</ZIPCd>
        </USAddress>
        <RecipientEIN>812713543</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>760000</CashGrantAmt>
        <PurposeOfGrantTxt>Charter school support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Community Partnership School</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>1936 N Judson Street</AddressLine1Txt>
          <CityNm>Philadelphia</CityNm>
          <StateAbbreviationCd>PA</StateAbbreviationCd>
          <ZIPCd>19121</ZIPCd>
        </USAddress>
        <RecipientEIN>203195763</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>93500</CashGrantAmt>
        <PurposeOfGrantTxt>Scholarship support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>St Katherine Day School</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>930 Bowman Avenue</AddressLine1Txt>
          <CityNm>Wynnewood</CityNm>
          <StateAbbreviationCd>PA</StateAbbreviationCd>
          <ZIPCd>19096</ZIPCd>
        </USAddress>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>11095</CashGrantAmt>
        <PurposeOfGrantTxt>Scholarship support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>The Philadelphia School</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>2501 Lombard Street</AddressLine1Txt>
          <CityNm>Philadelphia</CityNm>
          <StateAbbreviationCd>PA</StateAbbreviationCd>
          <ZIPCd>19146</ZIPCd>
        </USAddress>
        <RecipientEIN>237091186</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>59500</CashGrantAmt>
        <PurposeOfGrantTxt>Scholarship support</PurposeOfGrantTxt>
      </RecipientTable>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>College Scholarships</GrantTypeTxt>
        <RecipientCnt>12</RecipientCnt>
        <CashGrantAmt>15000</CashGrantAmt>
        <ValuationMethodUsedDesc>Cash value</ValuationMethodUsedDesc>
      </GrantsOtherAsstToIndivInUSGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part I, Line 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>The Organization grants funds only to Mastery Charter Schools and OSTC funds to qualified institutions. The Organization's shared management team monitors all grants.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleI>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 11b</FormAndLineReferenceDesc>
        <ExplanationTxt>A draft of the Form 990 to be filed is provided to the Board of Directors prior to filing. The form is filed after their review.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 12c</FormAndLineReferenceDesc>
        <ExplanationTxt>Board members are covered by a conflict of interest policy which is reviewed annually by the Board members.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section C, line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>The Organization makes its governing documents, conflict of interest policy and financial statements available to the public upon request.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
    <IRS990ScheduleR documentId="RetDoc1043400001">
      <IdDisregardedEntitiesGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>MCSF Lender LLC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>5700 Wayne Avenue</AddressLine1Txt>
          <CityNm>Philadelphia</CityNm>
          <StateAbbreviationCd>PA</StateAbbreviationCd>
          <ZIPCd>19144</ZIPCd>
        </USAddress>
        <EIN>300885141</EIN>
        <PrimaryActivitiesTxt>Holder of debt for school bldg activity</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>PA</LegalDomicileStateCd>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>Mastery Charter Schools Foundation</BusinessNameLine1Txt>
        </DirectControllingEntityName>
      </IdDisregardedEntitiesGrp>
      <IdDisregardedEntitiesGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>MCSF Lender II LLC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>5700 Wayne Avenue</AddressLine1Txt>
          <CityNm>Philadelphia</CityNm>
          <StateAbbreviationCd>PA</StateAbbreviationCd>
          <ZIPCd>19144</ZIPCd>
        </USAddress>
        <PrimaryActivitiesTxt>Holder of debt for school bldg activity</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>PA</LegalDomicileStateCd>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>Mastery Charter Schools Foundation</BusinessNameLine1Txt>
        </DirectControllingEntityName>
      </IdDisregardedEntitiesGrp>
    </IRS990ScheduleR>
  </ReturnData>
</Return>