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      <FootnoteTextInd>X</FootnoteTextInd>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE D, PAGE 3, PART X</FormAndLineReferenceDesc>
        <ExplanationTxt>NISN IS EXEMPT FROM FEDERAL INCOME TAX UNDER SECTION 501(C)(3) OF THE INTERNAL REVENUE CODE ON ALL IMCOME EXCEPT UNRELATED BUSINESS INCOME. NISN EVALUATES UNCERTAIN TAX POSITIONS IN ACCORDANCE WITH ASC 450 ACCOUNTING FOR CONTINGENCIES WHEREBY THE EFFECT OF THE UNCERTAINTIES IN TAX POSITIONS WOULD BE RECORDED IF THE OUTCOME WAS CONSIDERED PROBABLE AND REASONABLY ESTIMABLE. NISN BELIEVES THAT IT HAS APPROPRIATE SUPPORT FOR ANY TAX POSSITION TAKEN, AND AS SUCH, DOES NOT HAVE ANY UNCERTAIN TAX POSITIONS THAT ARE MATERIAL TO THE FINANCIAL STATEMENTS. NIN'S OPEN AUDIT PERIODS ARE FISCAL YEAR 2020 AND THEREAFTER.</ExplanationTxt>
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          <BusinessNameLine1Txt>DEAP SCHOOL</BusinessNameLine1Txt>
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          <CityNm>NAVAJO</CityNm>
          <StateAbbreviationCd>NM</StateAbbreviationCd>
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      <RecipientTable>
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          <BusinessNameLine1Txt>NATIVE AMERICAN COMMUNITY ACADEMY</BusinessNameLine1Txt>
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        <USAddress>
          <AddressLine1Txt>1000 INDIAN SCHOOL RD NW</AddressLine1Txt>
          <CityNm>ALBUQUERQUE</CityNm>
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          <ZIPCd>87104</ZIPCd>
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      <RecipientTable>
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          <BusinessNameLine1Txt>SIX DIRECTIONS INDIGENOUS SCHOOL</BusinessNameLine1Txt>
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          <AddressLine1Txt>2055 NM-602</AddressLine1Txt>
          <CityNm>GALLUP</CityNm>
          <StateAbbreviationCd>NM</StateAbbreviationCd>
          <ZIPCd>87301</ZIPCd>
        </USAddress>
        <RecipientEIN>810841135</RecipientEIN>
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      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>RAICES DEL SABOR XINACHTIL COM</BusinessNameLine1Txt>
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        <USAddress>
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          <CityNm>LAS CRUCES</CityNm>
          <StateAbbreviationCd>NM</StateAbbreviationCd>
          <ZIPCd>88007</ZIPCd>
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      <RecipientTable>
        <RecipientBusinessName>
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          <CityNm>TOWAOC</CityNm>
          <StateAbbreviationCd>CO</StateAbbreviationCd>
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      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>AMERICAN INDIAN ACADEMY OF DENVER</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>1865 W MISSISSIPPI AVE</AddressLine1Txt>
          <CityNm>DENVER</CityNm>
          <StateAbbreviationCd>CO</StateAbbreviationCd>
          <ZIPCd>80223</ZIPCd>
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      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>ENDAZHI NITAAWIGING</BusinessNameLine1Txt>
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          <AddressLine1Txt>15484 MIGIZI DR</AddressLine1Txt>
          <CityNm>RED LAKE</CityNm>
          <StateAbbreviationCd>MN</StateAbbreviationCd>
          <ZIPCd>56671</ZIPCd>
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          <BusinessNameLine2Txt>COALITION</BusinessNameLine2Txt>
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          <CityNm>BLACK HAWK</CityNm>
          <StateAbbreviationCd>SD</StateAbbreviationCd>
          <ZIPCd>57718</ZIPCd>
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        <CashGrantAmt>285000</CashGrantAmt>
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      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>TIDES CENTER</BusinessNameLine1Txt>
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          <AddressLine1Txt>1012 TORNEY AVE</AddressLine1Txt>
          <CityNm>SAN FRANCISCO</CityNm>
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      <RecipientTable>
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          <BusinessNameLine1Txt>OCETI SAKOWIN COMMUNITY SCHOOL</BusinessNameLine1Txt>
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          <CityNm>RAPID CITY</CityNm>
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      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>SAAD K'IDILYE LANGUAGE NEST</BusinessNameLine1Txt>
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        <USAddress>
          <AddressLine1Txt>9315 CANDELARIA RD NE</AddressLine1Txt>
          <CityNm>ALBUQUERQUE</CityNm>
          <StateAbbreviationCd>NM</StateAbbreviationCd>
          <ZIPCd>87112</ZIPCd>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE I, PAGE 1, PART I, LINE 2</FormAndLineReferenceDesc>
        <ExplanationTxt>NISN MAINTAINS DETAILED RECORDS OF ALL AWARDS TO INDIVIDUALS, EACH APPLICANT IS REQUIRED TO COMPLETE AN APPLICATION PROCESS THAT ALSO REQUIRES COMMITTEE APPROVAL.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990 - ORGANIZATION'S MISSION</FormAndLineReferenceDesc>
        <ExplanationTxt>NISN'S MISSION IS TO TRANSFORM INDIGENOUS EDUCATION BY ENGAGING COMMUNITIES, BUILDING NETWORKED SCHOOLS OF ACADEMIC EXCELLENCE AND CULTURAL RELEVANCE, AND SERVING INDIGENOUS STUDENTS FROM EARLY LEARNING TO ADULTHOOD SO THAT THEY ARE SECURE IN THEIR IDENTITY, HEALTHY, AND HOLISTICALLY PREPARED AS LIFELONG LEARNERS AND LEADERS IN THEIR COMMUNITIES.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>PRELIMINARY COPY DISTRIBUTED FOR REVIEW PRIOR TO FILING</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>ANNUALY, BOARD MEMBERS COMPLETE A CONFLICT OF INTEREST DISCLOSURE FORM AND ANY CONFLICTS WILL BE REPORTED TO THE ENTIRE BOARD.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 15A</FormAndLineReferenceDesc>
        <ExplanationTxt>THE BOARD REVIEWED EXTERNAL SALARY DATA OF THE OTHER LARGE CHARTER NETWORKS, LOCAL SUPERINTENDENTS, AND LOCAL STATE ADMINISTRATORS. THE EXECUTIVE DIRECTOR'S SALARY WAS ADJUSTED BASED ON THE DATA REVIEWED.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>DOCUMENTS ARE AVAILABLE TO THE PUBLIC UPON REQUEST AND CAN BE ACCESSED ON CERTAIN WEBSITES.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART IX, LINE 11G</FormAndLineReferenceDesc>
        <ExplanationTxt>CONSULTANTS 574,153 27,000 51,150 GRANT WRITING &amp; MANAGEMENT 121,346 5,706 10,810 TECHNOLOGY CONTRACTORS 102,383 4,815 9,121 STIPENDS 88,782 4,175 7,909 FAMILY LIASON 81,375 0 0 ACE STUDENT EXPENSE 167,161 7,861 14,892 OTHER PERSONNEL 14,115 664 1,257 TOTAL 1,149,315 50,221 95,139</ExplanationTxt>
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  </ReturnData>
</Return>
