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        <BusinessCd>611710</BusinessCd>
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        <RelatedOrExemptFuncIncomeAmt>215995</RelatedOrExemptFuncIncomeAmt>
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      <ProgramServiceRevenueGrp>
        <Desc>AUXILIARY PROGRAMS</Desc>
        <BusinessCd>611710</BusinessCd>
        <TotalRevenueColumnAmt>130937</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>130937</RelatedOrExemptFuncIncomeAmt>
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      <ProgramServiceRevenueGrp>
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        <BusinessCd>611710</BusinessCd>
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        <RelatedOrExemptFuncIncomeAmt>47169</RelatedOrExemptFuncIncomeAmt>
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        <ManagementAndGeneralAmt>30190</ManagementAndGeneralAmt>
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        <ManagementAndGeneralAmt>169091</ManagementAndGeneralAmt>
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        <ProgramServicesAmt>62923</ProgramServicesAmt>
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        <ManagementAndGeneralAmt>49729</ManagementAndGeneralAmt>
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        <EOYAmt>215863</EOYAmt>
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      <InfoInScheduleOPartXIIInd>X</InfoInScheduleOPartXIIInd>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>0</AccountantCompileOrReviewInd>
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        <ContributorBusinessName>
          <BusinessNameLine1>RESTRICTED</BusinessNameLine1>
        </ContributorBusinessName>
        <ContributorUSAddress>
          <AddressLine1>RESTRICTED</AddressLine1>
          <AddressLine2>RESTRICTED</AddressLine2>
          <City>RESTRICTED</City>
          <State>RESTRICTED</State>
          <ZIPCode>RESTRICTED</ZIPCode>
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        <DepreciationAmt>402981</DepreciationAmt>
        <BookValueAmt>43043</BookValueAmt>
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      <TotalBookValueLandBuildingsAmt>1422448</TotalBookValueLandBuildingsAmt>
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        <Desc>DEPOSITS</Desc>
        <BookValueAmt>225625</BookValueAmt>
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      <TotalBookValueOtherAssetsAmt>225625</TotalBookValueOtherAssetsAmt>
      <OtherLiabilitiesOrgGrp>
        <Desc>DEFERRED RENT EXPENSE</Desc>
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      <OtherLiabilitiesOrgGrp>
        <Desc>PPP LOAN</Desc>
        <Amt>800418</Amt>
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      <FootnoteTextInd>X</FootnoteTextInd>
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      <RevenueNotReportedFinclStmtAmt>0</RevenueNotReportedFinclStmtAmt>
      <TotalRevenuePerForm990Amt>6985467</TotalRevenuePerForm990Amt>
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      <ExpensesNotReportedAmt>0</ExpensesNotReportedAmt>
      <ExpensesSubtotalAmt>7080877</ExpensesSubtotalAmt>
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      <ExpensesNotRptFinclStmtAmt>512031</ExpensesNotRptFinclStmtAmt>
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        <FormAndLineReferenceDesc>PART X, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE SCHOOL IS A TAX-EXEMPT ORGANIZATION UNDER INTERNAL REVENUE SERVICE CODE SECTION 501(C)(3) AND THE CALIFORNIA TAX CODE. THE SCHOOL FOLLOWS THE GUIDANCE OF THE FINANCIAL ACCOUNTING STANDARDS BOARD (FASB) ACCOUNTING STANDARDS CODIFICATION (ASC) TOPIC 740 FOR ACCOUNTING FOR UNCERTAINTY IN INCOME TAXES. MANAGEMENT EVALUATED THE SCHOOL'S TAX POSITIONS AND CONCLUDED THAT THE SCHOOL HAD MAINTAINED ITS TAX-EXEMPT STATUS AND HAD TAKEN NO UNCERTAIN TAX POSITIONS THAT REQUIRED ADJUSTMENT TO THE FINANCIAL STATEMENTS. THEREFORE, NO PROVISION OR LIABILITY FOR INCOME TAXES HAS BEEN INCLUDED IN THE FINANCIAL STATEMENTS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART XI, LINE 2D - OTHER ADJUSTMENTS:</FormAndLineReferenceDesc>
        <ExplanationTxt>FINANCIAL AID -363,208. TUITION REMISSION -143,880. EVENT EXPENSES -4,943.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART XII, LINE 4B - OTHER ADJUSTMENTS:</FormAndLineReferenceDesc>
        <ExplanationTxt>FINANCIAL AID 363,208. TUITION REMISSION 143,880. EVENT EXPENSES 4,943.</ExplanationTxt>
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      <NondiscriminatoryPolicyStmtInd>1</NondiscriminatoryPolicyStmtInd>
      <PolicyStmtInBrochuresEtcInd>1</PolicyStmtInBrochuresEtcInd>
      <PlcyPblczdViaBroadcastMediaInd>1</PlcyPblczdViaBroadcastMediaInd>
      <MaintainRacialCompRecsInd>1</MaintainRacialCompRecsInd>
      <MaintainScholarshipsRecsInd>1</MaintainScholarshipsRecsInd>
      <MaintainCpyOfBrochuresEtcInd>1</MaintainCpyOfBrochuresEtcInd>
      <MaintainCpyOfAllSolInd>1</MaintainCpyOfAllSolInd>
      <DiscriminateRaceStdntsRghtsInd>0</DiscriminateRaceStdntsRghtsInd>
      <DiscriminateRaceAdmissPlcyInd>0</DiscriminateRaceAdmissPlcyInd>
      <DiscriminateRaceEmplmFcultyInd>0</DiscriminateRaceEmplmFcultyInd>
      <DiscriminateRaceSchsInd>0</DiscriminateRaceSchsInd>
      <DiscriminateRaceEducPlcyInd>0</DiscriminateRaceEducPlcyInd>
      <DiscriminateRaceUseOfFcltsInd>0</DiscriminateRaceUseOfFcltsInd>
      <DiscriminateRaceAthltProgInd>0</DiscriminateRaceAthltProgInd>
      <DiscriminateRaceOtherActyInd>0</DiscriminateRaceOtherActyInd>
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      <GovernmentFinancialAidRvkdInd>0</GovernmentFinancialAidRvkdInd>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE E, PART I, LINE 3</FormAndLineReferenceDesc>
        <ExplanationTxt>THE NONDISCRIMINATORY POLICY IS LISTED ON THE ADMISSIONS SECTION OF THE ORGANIZATION'S WEBSITE (HTTPS://ALTOSCHOOL.OPENAPPLY.COM/) AND PRINTED IN REGISTRATION DOCUMENTS.</ExplanationTxt>
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      <GrantRecordsMaintainedInd>1</GrantRecordsMaintainedInd>
      <GrantsOtherAsstToIndivInUSGrp>
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        <RecipientCnt>97</RecipientCnt>
        <CashGrantAmt>363208</CashGrantAmt>
        <ValuationMethodUsedDesc>FMV</ValuationMethodUsedDesc>
        <NonCashAssistanceDesc>DIRECT CREDIT TO STUDENT ACCOUNT</NonCashAssistanceDesc>
      </GrantsOtherAsstToIndivInUSGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>APPLICANTS COMPLETE A FINANCIAL AID FORM THROUGH SCHOOL AND STUDENT SERVICES OF NAIS ("SSS") TO DETERMINE ELIGIBILITY FOR REDUCED TUITION. DISCOUNTS ARE APPLIED DIRECTLY TO THE STUDENT'S ACCOUNT.</ExplanationTxt>
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      <BoardOrCommitteeApprovalInd>X</BoardOrCommitteeApprovalInd>
      <SeverancePaymentInd>0</SeverancePaymentInd>
      <SupplementalNonqualRtrPlanInd>0</SupplementalNonqualRtrPlanInd>
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        <PersonNm>MICHAEL CHAPMAN</PersonNm>
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        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
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        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>0</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
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        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>245926</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 7</FormAndLineReferenceDesc>
        <ExplanationTxt>THE BOARD AUTHORIZES DISCRETIONARY BONUS AMOUNT TO HEAD OF SCHOOL PRIOR TO PAYMENT.</ExplanationTxt>
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        <NameOfInterested>
          <BusinessName>
            <BusinessNameLine1Txt>CLAUDIA WEBER</BusinessNameLine1Txt>
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        <RelationshipDescriptionTxt>FAMILY MEMBER OF BOARD MEMBER SVEN WEBER</RelationshipDescriptionTxt>
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        <TransactionDesc>EMPLOYMENT</TransactionDesc>
        <SharingOfRevenuesInd>0</SharingOfRevenuesInd>
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    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 4</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION UPDATED ITS BYLAWS ON MARCH 26, 2020. THE FOLLOWING CHANGES WERE MADE. - THE INITIAL TERM OF ALL DIRECTORS WAS REVISED TO SERVE NO MORE THAN THREE CONSECUTIVE YEARS VERSUS TWO YEARS. - THE TREASURER POWERS AND PERFORMANCE DUTIES WERE FURTHER SPECIFIED BY THE BOARD OF DIRECTORS TO HAVE THE SUPERVISION OF MAINTAINING THE BOOK AND RECORDS OF THE CORPORATION, DEPOSIT ALL AMOUNTS OF MONEY AND VALUES IN THE NAME AND TO THE CREDIT OF THE CORPORATION, PREPARE AND PRESENT TO THE BOARD THE ANNUAL BUDGET AND MONTHLY FINANCIAL STATEMENTS, AND PREPARE THE ANNUAL TAX RETURNS AND ANNUAL AUDIT REPORT. - THE HEAD OF SCHOOL WAS DEFINED ITS DUTIES AS AN OFFICER TO ACT AS CEO AND HAVE GENERAL SUPERVISION, DIRECTION, AND CONTROL OF THE BUSINESS OF THE CORPORATION. - THE BYLAWS WERE UPDATED TO SPECIFY AND BREAK UP COMMITTEES. THE COMMITTEES ESTABLISHED WERE THE EXECUTIVE COMMITTEE, DIRECTORS AND GOVERNANCE COMMITTEES, FINANCE COMMITTEE, DEVELOPMENT COMMITTEE, AND FACILITIES COMMITTEE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>FORM 990 IS REVIEWED BY BOARD MEMBERS BEFORE FILING.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>BOARD REQUIRES ANNUAL CONFLICT OF INTEREST STATEMENTS FOR BOARD MEMBERS AND MONITORS POTENTIAL CONFLICTS ON AN ONGOING BASIS.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15A</FormAndLineReferenceDesc>
        <ExplanationTxt>BOARD REVIEWS AND APPROVES COMPENSATION OF HEAD OF SCHOOL BASED ON PAY SCALE OF EMPLOYEES AT COMPARABLE SCHOOLS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>ALTO INTERNATIONAL SCHOOL MAKES ITS GOVERNING DOCUMENTS, CONFLICT OF INTEREST POLICY, AND FINANCIAL STATEMENTS AVAILABLE UPON REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART XII, LINE 2C:</FormAndLineReferenceDesc>
        <ExplanationTxt>THIS PROCESS HAS NOT CHANGED FROM THE PRIOR YEAR.</ExplanationTxt>
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</Return>