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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART V, LINE 4:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE SCHOOL HAS A PURPOSE RESTRICTED ENDOWMENT FUND THAT IS BEING ADMINISTERED BY THE SAN ANTONIO AREA FOUNDATION. EACH YEAR THE SCHOOL HAS THE RIGHTS TO DISTRIBUTIONS FOR OPERATING EXPENSES, SCHOLARSHIPS, FUNDRAISING AND DEVELOPMENT, CONSTRUCTION OR MAINTENANCE OF IMPROVEMENTS, EDUCATIONAL AND MEDICAL RESEARCH, LIBRARY AND EQUIPMENT PURCHASES, AND GROUND UPKEEP.</ExplanationTxt>
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      <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>
      <ComplianceWithRevProc7550Ind>1</ComplianceWithRevProc7550Ind>
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        <FormAndLineReferenceDesc>SCHEDULE E, PART I, LINE 3</FormAndLineReferenceDesc>
        <ExplanationTxt>THE SCHOOL INCLUDES A STATEMENT REGARDING ITS NONDISCRIMINATORY POLICY IN ITS BROCHURES, REGISTRATION FORMS, PARENT HANDBOOK AND ADVERTISEMENTS. THE SCHOOL INCLUDES A STATEMENT REGARDING ITS NONDISCRIMINATORY POLICY IN ITS BROCHURES, REGISTRATION FORMS, PARENT HANDBOOK AND ADVERTISEMENTS.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SECTION 1.263(A)-1(F) DE MINIMIS SAFE HARBOR ELECTION</FormAndLineReferenceDesc>
        <ExplanationTxt>THE WINSTON SCHOOL OF SAN ANTONIO 8565 EWING HALSELL DRIVE SAN ANTONIO, TX 78229 EMPLOYER IDENTIFICATION NUMBER: 74-2529262 FOR THE SHORT YEAR ENDING JUNE 30, 2022 COVERING THE PERIOD OF JUNE 1, 2022 - JUNE 30, 2022. THE WINSTON SCHOOL OF SAN ANTONIO IS MAKING THE DE MINIMIS SAFE HARBOR ELECTION UNDER REG. SEC. 1.263(A)-1(F).</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FORM 990 IS PREPARED BY THE SCHOOL'S INDEPENDENT CERTIFIED PUBLIC ACCOUNTING FIRM. IT IS REVIEWED BY THE DIRECTOR OF FINANCE AND THE HEADMASTER, THEN REVIEWED BY THE AUDIT COMMITTEE AND FULL BOARD BEFORE SIGNING AND FILING.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>BOARD MEMBERS ARE REQUIRED TO COMPLETE A CONFLICT OF INTEREST STATEMENT EACH YEAR. ANY BOARD MEMBER JOINING THE BOARD MID-YEAR IS ALSO REQUIRED TO COMPLETE A STATEMENT.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15</FormAndLineReferenceDesc>
        <ExplanationTxt>THE EXECUTIVE COMMITTEE OF THE BOARD CONDUCTS AN EVALUATION OF THE HEADMASTER. THEY REFER TO A SALARY SCALE COMPRISED OF ISAS SCHOOLS GROUPED BY SIZE. THE HEADMASTER EVALUATES EACH KEY EMPLOYEE ON AN ANNUAL BASIS. ALL EMPLOYEES ARE GRANTED THE SAME PERCENTAGE INCREASE. ON OCCASION, SOME EMPLOYEES MAY BE GRANTED AN ADDITIONAL PERCENTAGE INCREASE OR A BONUS AT THE HEADMASTER'S DISCRETION.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>THE SCHOOL MAKES ITS GOVERNING DOCUMENTS, CONFLICT OF INTEREST POLICY AND AUDITED FINANCIAL STATEMENTS AVAILABLE TO THE PUBLIC UPON WRITTEN REQUEST TO ITS ADMINISTRATIVE OFFICE.</ExplanationTxt>
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          <StateAbbreviationCd>TX</StateAbbreviationCd>
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      <GiftGrntCapContriFromOthOrgInd>0</GiftGrntCapContriFromOthOrgInd>
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