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        <ManagementAndGeneralAmt>57623</ManagementAndGeneralAmt>
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      <DepreciationDepletionGrp>
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        <ManagementAndGeneralAmt>224248</ManagementAndGeneralAmt>
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        <ProgramServicesAmt>9750</ProgramServicesAmt>
        <ManagementAndGeneralAmt>39002</ManagementAndGeneralAmt>
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        <Desc>Lunchroom</Desc>
        <TotalAmt>226787</TotalAmt>
        <ProgramServicesAmt>226787</ProgramServicesAmt>
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      <OtherExpensesGrp>
        <Desc>Athletic program</Desc>
        <TotalAmt>141389</TotalAmt>
        <ProgramServicesAmt>141389</ProgramServicesAmt>
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      <OtherExpensesGrp>
        <Desc>Academic expenses</Desc>
        <TotalAmt>81788</TotalAmt>
        <ProgramServicesAmt>81788</ProgramServicesAmt>
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        <Desc>Activity Expenses</Desc>
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        <ProgramServicesAmt>114427</ProgramServicesAmt>
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        <ManagementAndGeneralAmt>46246</ManagementAndGeneralAmt>
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        <ProgramServicesAmt>1888221</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1311875</ManagementAndGeneralAmt>
        <FundraisingAmt>4844</FundraisingAmt>
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        <EOYAmt>1019571</EOYAmt>
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      <LandBldgEquipAccumDeprecAmt>2786885</LandBldgEquipAccumDeprecAmt>
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        <EOYAmt>1004039</EOYAmt>
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        <EOYAmt>35623</EOYAmt>
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        <EOYAmt>620593</EOYAmt>
      </DeferredRevenueGrp>
      <MortgNotesPyblScrdInvstPropGrp>
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        <EOYAmt>881233</EOYAmt>
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      <UnsecuredNotesLoansPayableGrp>
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        <EOYAmt>6744</EOYAmt>
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      <OtherLiabilitiesGrp>
        <BOYAmt>228738</BOYAmt>
        <EOYAmt>204872</EOYAmt>
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      <TotalLiabilitiesGrp>
        <BOYAmt>2029120</BOYAmt>
        <EOYAmt>1749065</EOYAmt>
      </TotalLiabilitiesGrp>
      <OrganizationFollowsFASB117Ind>X</OrganizationFollowsFASB117Ind>
      <NoDonorRestrictionNetAssetsGrp>
        <BOYAmt>-102613</BOYAmt>
        <EOYAmt>1136594</EOYAmt>
      </NoDonorRestrictionNetAssetsGrp>
      <TotalNetAssetsFundBalanceGrp>
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        <EOYAmt>1136594</EOYAmt>
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      <TotLiabNetAssetsFundBalanceGrp>
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        <EOYAmt>2885659</EOYAmt>
      </TotLiabNetAssetsFundBalanceGrp>
      <InfoInScheduleOPartXIInd>X</InfoInScheduleOPartXIInd>
      <ReconcilationRevenueExpnssAmt>301355</ReconcilationRevenueExpnssAmt>
      <OtherChangesInNetAssetsAmt>937852</OtherChangesInNetAssetsAmt>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>false</AccountantCompileOrReviewInd>
      <FSAuditedInd>true</FSAuditedInd>
      <FSAuditedBasisGrp>
        <SeparateBasisFinclStmtInd>X</SeparateBasisFinclStmtInd>
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      <AuditCommitteeInd>true</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>false</FederalGrantAuditRequiredInd>
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      <SchoolInd>X</SchoolInd>
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      <InclEscrowCustodialAcctLiabInd>false</InclEscrowCustodialAcctLiabInd>
      <LandGrp>
        <OtherCostOrOtherBasisAmt>28120</OtherCostOrOtherBasisAmt>
        <BookValueAmt>28120</BookValueAmt>
      </LandGrp>
      <BuildingsGrp>
        <OtherCostOrOtherBasisAmt>2307844</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>1627293</DepreciationAmt>
        <BookValueAmt>680551</BookValueAmt>
      </BuildingsGrp>
      <EquipmentGrp>
        <OtherCostOrOtherBasisAmt>1259107</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>993898</DepreciationAmt>
        <BookValueAmt>265209</BookValueAmt>
      </EquipmentGrp>
      <OtherLandBuildingsGrp>
        <OtherCostOrOtherBasisAmt>195853</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>165694</DepreciationAmt>
        <BookValueAmt>30159</BookValueAmt>
      </OtherLandBuildingsGrp>
      <TotalBookValueLandBuildingsAmt>1004039</TotalBookValueLandBuildingsAmt>
      <OtherSecuritiesGrp>
        <Desc>Financial derivatives and other financial products</Desc>
      </OtherSecuritiesGrp>
      <OtherSecuritiesGrp>
        <Desc>Closely-held equity interests</Desc>
      </OtherSecuritiesGrp>
      <OtherLiabilitiesOrgGrp>
        <Desc>Federal income taxes</Desc>
      </OtherLiabilitiesOrgGrp>
      <OtherLiabilitiesOrgGrp>
        <Desc>Contracts Payable</Desc>
        <Amt>204872</Amt>
      </OtherLiabilitiesOrgGrp>
      <OtherLiabilitiesOrgGrp>
        <Desc>Accrued expenses</Desc>
      </OtherLiabilitiesOrgGrp>
      <TotalLiabilityAmt>204872</TotalLiabilityAmt>
      <TotalRevEtcAuditedFinclStmtAmt>3506295</TotalRevEtcAuditedFinclStmtAmt>
      <RevenueSubtotalAmt>3506295</RevenueSubtotalAmt>
      <TotalRevenuePerForm990Amt>3506295</TotalRevenuePerForm990Amt>
      <TotExpnsEtcAuditedFinclStmtAmt>3204940</TotExpnsEtcAuditedFinclStmtAmt>
      <ExpensesSubtotalAmt>3204940</ExpensesSubtotalAmt>
      <TotalExpensesPerForm990Amt>3204940</TotalExpensesPerForm990Amt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>IV 11f</FormAndLineReferenceDesc>
        <ExplanationTxt>Windsor only recognizes the tax benefit from uncertain tax posotion taken or to be taken in a tax return if the position is more likely than not to be sustained upon examination, based on the technical merits of the position. Management has analyzed tax positions taken for filings with the Internal Revenue Service and all state jurisdictions where the organization operates. Management believes that income tax filing positions would be sustained upon examinaton and does not anticipate that any adjustements woud result in a material adverse effect on the organizations financial condition, results of operations or cash flows. Accordingly, Windsor has not recorded any reserves, or related accruals for interest and penalties for uncertain income tax positions at May 31, 2023.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleE documentId="990E" softwareId="22015461" softwareVersionNum="22.0.1.0">
      <NondiscriminatoryPolicyStmtInd>true</NondiscriminatoryPolicyStmtInd>
      <PolicyStmtInBrochuresEtcInd>true</PolicyStmtInBrochuresEtcInd>
      <PlcyPblczdViaBroadcastMediaInd>true</PlcyPblczdViaBroadcastMediaInd>
      <MaintainRacialCompRecsInd>true</MaintainRacialCompRecsInd>
      <MaintainScholarshipsRecsInd>true</MaintainScholarshipsRecsInd>
      <MaintainCpyOfBrochuresEtcInd>true</MaintainCpyOfBrochuresEtcInd>
      <MaintainCpyOfAllSolInd>true</MaintainCpyOfAllSolInd>
      <DiscriminateRaceStdntsRghtsInd>false</DiscriminateRaceStdntsRghtsInd>
      <DiscriminateRaceAdmissPlcyInd>false</DiscriminateRaceAdmissPlcyInd>
      <DiscriminateRaceEmplmFcultyInd>false</DiscriminateRaceEmplmFcultyInd>
      <DiscriminateRaceSchsInd>false</DiscriminateRaceSchsInd>
      <DiscriminateRaceEducPlcyInd>false</DiscriminateRaceEducPlcyInd>
      <DiscriminateRaceUseOfFcltsInd>false</DiscriminateRaceUseOfFcltsInd>
      <DiscriminateRaceAthltProgInd>false</DiscriminateRaceAthltProgInd>
      <DiscriminateRaceOtherActyInd>false</DiscriminateRaceOtherActyInd>
      <GovernmentFinancialAidRcvdInd>false</GovernmentFinancialAidRcvdInd>
      <ComplianceWithRevProc7550Ind>true</ComplianceWithRevProc7550Ind>
    </IRS990ScheduleE>
    <IRS990ScheduleG documentId="990G" softwareId="22015461" softwareVersionNum="22.0.1.0">
      <SpecialFundraisingEventsInd>X</SpecialFundraisingEventsInd>
      <AgrmtProfFundraisingActyInd>false</AgrmtProfFundraisingActyInd>
      <FundraisingEventInformationGrp>
        <Event1Nm>Fall Raffle</Event1Nm>
        <GrossReceiptsEvent1Amt>121004</GrossReceiptsEvent1Amt>
        <GrossRevenueEvent1Amt>121004</GrossRevenueEvent1Amt>
        <OtherDirectExpensesEvent1Amt>1397</OtherDirectExpensesEvent1Amt>
        <Event2Nm>Auction</Event2Nm>
        <GrossReceiptsEvent2Amt>51076</GrossReceiptsEvent2Amt>
        <GrossRevenueEvent2Amt>51076</GrossRevenueEvent2Amt>
        <OtherDirectExpensesEvent2Amt>48330</OtherDirectExpensesEvent2Amt>
        <OtherEventsTotalCnt>1</OtherEventsTotalCnt>
        <GrossReceiptsOtherEventsAmt>26135</GrossReceiptsOtherEventsAmt>
        <GrossRevenueOtherEventsAmt>26135</GrossRevenueOtherEventsAmt>
        <OthDirectExpnssOtherEventsAmt>2000</OthDirectExpnssOtherEventsAmt>
        <GrossReceiptsTotalAmt>198215</GrossReceiptsTotalAmt>
        <GrossRevenueTotalEventsAmt>198215</GrossRevenueTotalEventsAmt>
        <OthDirectExpnssTotalEventsAmt>51727</OthDirectExpnssTotalEventsAmt>
        <DirectExpenseSummaryEventsAmt>51727</DirectExpenseSummaryEventsAmt>
        <NetIncomeSummaryAmt>146488</NetIncomeSummaryAmt>
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    </IRS990ScheduleG>
    <IRS990ScheduleO documentId="990O" softwareId="22015461" softwareVersionNum="22.0.1.0">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part IV, Section B, Line 11</FormAndLineReferenceDesc>
        <ExplanationTxt>The Administrator/Headmaster reviews the return and approves to be electronically filed</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part IV, Section C, Line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>All information is readily accessible to the governing body. All oher parties must submit requests in writing to the Administration office.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part XI, Line 9</FormAndLineReferenceDesc>
        <ExplanationTxt>The change to net assets other relates to the ERC credit receivable that was confirmed subsequent to the filing of the prior 990.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part XI, Line 2</FormAndLineReferenceDesc>
        <ExplanationTxt>Windsor has elected to change its accounting year/period to align with the school year. The Board voted and accepted the change. Its new accounting period will be June 1-May 31 each year. The filing of this return elects the change by filing a short year for 2022-2023.</ExplanationTxt>
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</Return>
