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      <FootnoteTextInd>X</FootnoteTextInd>
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      <RevenueNotReportedFinclStmtAmt>0</RevenueNotReportedFinclStmtAmt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART X, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE CHARTER SCHOOL EVALUATES UNCERTAIN TAX POSITIONS IN ACCORDANCE WITH ASC 740-10-25-6, INCOME TAXES, WHEREBY THE EFFECT OF UNCERTAINTY WOULD BE RECORDED IF THE TAX POSITIONS WILL MORE LIKELY THAN NOT BE SUSTAINED UPON EXAMINATION. AS OF JUNE 30, 2021, THE CHARTER SCHOOL HAD NO UNCERTAIN TAX POSITIONS REQUIRING ACCRUAL OR DISCLOSURE.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART XI, LINE 2D - OTHER ADJUSTMENTS:</FormAndLineReferenceDesc>
        <ExplanationTxt>INTER-SCHOOL EXPENSE TRANSFERS</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART XII, LINE 2D - OTHER ADJUSTMENTS:</FormAndLineReferenceDesc>
        <ExplanationTxt>INTER-SCHOOL EXPENSE TRANSFERS</ExplanationTxt>
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      <DiscriminateRaceEducPlcyInd>0</DiscriminateRaceEducPlcyInd>
      <DiscriminateRaceUseOfFcltsInd>0</DiscriminateRaceUseOfFcltsInd>
      <DiscriminateRaceAthltProgInd>0</DiscriminateRaceAthltProgInd>
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      <GovernmentFinancialAidRvkdInd>0</GovernmentFinancialAidRvkdInd>
      <ComplianceWithRevProc7550Ind>0</ComplianceWithRevProc7550Ind>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE E, PART I, LINE 3</FormAndLineReferenceDesc>
        <ExplanationTxt>CALIFORNIA CHARTER SCHOOLS ARE CONSIDERED PUBLIC RATHER THAN PRIVATE SCHOOLS AND ARE THEREFORE NOT SUBJECT TO THE REQUIREMENTS OF SCHEDULE E.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE E, PART I, LINE 4</FormAndLineReferenceDesc>
        <ExplanationTxt>CALIFORNIA CHARTER SCHOOLS ARE CONSIDERED PUBLIC RATHER THAN PRIVATE SCHOOLS AND ARE THEREFORE NOT SUBJECT TO THE REQUIREMENTS OF SCHEDULE E.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE E, PART I, LINE 7</FormAndLineReferenceDesc>
        <ExplanationTxt>CALIFORNIA CHARTER SCHOOLS ARE CONSIDERED PUBLIC RATHER THAN PRIVATE SCHOOLS AND ARE THEREFORE NOT SUBJECT TO THE REQUIREMENTS OF SCHEDULE E.</ExplanationTxt>
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    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART IV, LINE 13:</FormAndLineReferenceDesc>
        <ExplanationTxt>CHARTER SCHOOLS ARE CONSIDERED PUBLIC RATHER THAN PRIVATE SCHOOLS, AND THEREFORE, ARE NOT REQUIRED TO COMPLETE SCHEDULE E.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>FORM 990 IS SUBMITTED TO BOARD OF DIRECTORS FOR REVIEW BEFORE FILING.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>BOARD OF DIRECTORS REVIEW ALL POSSIBLE CONFLICTS OF INTEREST.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15</FormAndLineReferenceDesc>
        <ExplanationTxt>DIRECTOR SALARY IS REVIEWED AND APPROVED BY THE BOARD OF DIRECTORS.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 18</FormAndLineReferenceDesc>
        <ExplanationTxt>AUDITED FINANCIAL STATEMENTS ARE AVAILABLE UPON REQUEST.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>AUDITED FINANCIAL STATEMENTS ARE AVAILABLE UPON REQUEST.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART X, LINE 15:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE NORTHERN UNITED CHARTER SCHOOLS WERE ESTABLISHED AS INDEPENDENT CHARTER SCHOOLS BY THE HUMBOLDT COUNTY OFFICE OF EDUCATION AND THE SISKIYOU OFFICE OF EDUCATION, AFTER THE MATTOLE VALLEY CHARTER SCHOOL'S CHARTER WITH MATTOLE UNIFIED SCHOOL DISTRICT WAS TERMINATED ON JUNE 30, 2018, DUE TO RECENT COURT CASES LIMITING THE ABILITY OF CHARTER SCHOOLS TO OPERATE SITES OUTSIDE OF SPONSORING DISTRICT'S BOUNDARIES. THE REMAINING UNRESTRICTED FUND BALANCE IN THE MATTOLE VALLEY CHARTER SCHOOL AFTER TERMINATION IS BEING DISTRIBUTED TO NORTHERN UNITED CHARTER SCHOOLS, AND REFLECTED AS THE AMOUNT REPORTED AS OTHER ASSETS, TITLED "DUE FROM LAPSED ORGANIZATION". AS OF JUNE 30, 2020 THE BALANCE WAS RECEIVED IN FULL.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART XI, LINE 9:</FormAndLineReferenceDesc>
        <ExplanationTxt>ROUNDING 1.</ExplanationTxt>
      </SupplementalInformationDetail>
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</Return>
