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        <NoRebateDueInd>0</NoRebateDueInd>
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        <GrossProceedsInvestedInd>0</GrossProceedsInvestedInd>
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      </TaxExemptBondsArbitrageGrp>
      <TaxExemptBondsArbitrageGrp>
        <BondReferenceCd>D</BondReferenceCd>
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        <GrossProceedsInvestedInd>0</GrossProceedsInvestedInd>
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      <ProceduresCorrectiveActionGrp>
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      <ProceduresCorrectiveActionGrp>
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        <ProceduresCorrectiveActionInd>0</ProceduresCorrectiveActionInd>
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        <BondReferenceCd>A</BondReferenceCd>
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        <SubstantialCompletionYr>2023</SubstantialCompletionYr>
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        <GrossProceedsInvestedInd>0</GrossProceedsInvestedInd>
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        <BondReferenceCd>A</BondReferenceCd>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 3</FormAndLineReferenceDesc>
        <ExplanationTxt>BUSINESS MANAGEMENT DUTIES ARE PERFORMED BY SANTILLI &amp; THOMSON, LLC.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION'S BUSINESS MANAGERS PRESENT THE AUDITED FINANCIAL STATEMENT AND THE IRS FORM 990 FOR BOARD APPROVAL.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>BOARD MEMBERS ARE REQUIRED TO FILE A CONFLICT OF INTEREST STATEMENT ON AN ANNUAL BASIS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>ISAAC NEWTON FOUNDATION, INC. MAKES ITS GOVERNING DOCUMENTS, CONFLICT OF INTEREST POLICY, AND FINANCIAL STATEMENTS AVAILABLE TO THE PUBLIC UPON REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART XII, LINE 2C</FormAndLineReferenceDesc>
        <ExplanationTxt>THE PROCESS FOR ASSUMING RESPONSIBILITY FOR OVERSIGHT OF THE AUDIT OF THE ORGANIZATION'S FINANCIAL STATEMENTS AND SELECTION OF AN INDEPENDENT ACCOUNTANT BY THOSE CHARGED WITH GOVERNANCE HAS NOT CHANGED FROM THE PRIOR YEAR.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
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          <StateAbbreviationCd>PA</StateAbbreviationCd>
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        <LegalDomicileStateCd>PA</LegalDomicileStateCd>
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        <ControlledOrganizationInd>0</ControlledOrganizationInd>
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      <IdRelatedTaxExemptOrgGrp>
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          <StateAbbreviationCd>PA</StateAbbreviationCd>
          <ZIPCd>19116</ZIPCd>
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        <PrimaryActivitiesTxt>SUPPORT CHARTER SCHOOL IN PROVIDING EDUCATION TO STUDENT K THROUGH GRADE 12</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>PA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
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        <ControlledOrganizationInd>0</ControlledOrganizationInd>
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        <USAddress>
          <AddressLine1Txt>1800 EAST BYBERRY ROAD</AddressLine1Txt>
          <CityNm>PHILADELPHIA</CityNm>
          <StateAbbreviationCd>PA</StateAbbreviationCd>
          <ZIPCd>19116</ZIPCd>
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        <PrimaryActivitiesTxt>SUPPORT CHARTER SCHOOL IN PROVIDING EDUCATION TO STUDENT K THROUGH GRADE 8</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>PA</LegalDomicileStateCd>
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      <GiftGrntOrCapContriToOthOrgInd>0</GiftGrntOrCapContriToOthOrgInd>
      <GiftGrntCapContriFromOthOrgInd>0</GiftGrntCapContriFromOthOrgInd>
      <LoansOrGuaranteesToOtherOrgInd>1</LoansOrGuaranteesToOtherOrgInd>
      <LoansOrGuaranteesFromOthOrgInd>1</LoansOrGuaranteesFromOthOrgInd>
      <DivRelatedOrganizationInd>0</DivRelatedOrganizationInd>
      <AssetSaleToOtherOrgInd>0</AssetSaleToOtherOrgInd>
      <AssetPurchaseFromOtherOrgInd>0</AssetPurchaseFromOtherOrgInd>
      <AssetExchangeInd>0</AssetExchangeInd>
      <RentalOfFacilitiesToOthOrgInd>1</RentalOfFacilitiesToOthOrgInd>
      <RentalOfFcltsFromOthOrgInd>0</RentalOfFcltsFromOthOrgInd>
      <PerformOfServicesForOthOrgInd>0</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>0</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>0</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>0</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>0</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>0</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>0</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>0</TransferFromOtherOrgInd>
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          <BusinessNameLine1Txt>MATHEMATICS SCIENCE &amp; TECHNOLOGY COMMUNITY CHARTER SCHOOL</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>E</TransactionTypeTxt>
        <InvolvedAmt>27045000</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>DEBT GUARANTEE AT COST</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>MATHEMATICS SCIENCE &amp; TECHNOLOGY COMMUNITY CHARTER SCHOOL</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>J</TransactionTypeTxt>
        <InvolvedAmt>2523968</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>RENT AT COST</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>MAST COMMUNITY CHARTER SCHOOL III</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>J</TransactionTypeTxt>
        <InvolvedAmt>2451304</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>RENT AT COST</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>MAST COMMUNITY CHARTER SCHOOL III</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>E</TransactionTypeTxt>
        <InvolvedAmt>38425000</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>DEBT GUARANTEE AT COST</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>MAST COMMUNITY CHARTER SCHOOL II</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>J</TransactionTypeTxt>
        <InvolvedAmt>3454326</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>RENT AT COST</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
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        <MethodOfAmountDeterminationTxt>DEBT GUARANTEE AT COST</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
    </IRS990ScheduleR>
  </ReturnData>
</Return>
