﻿<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.irs.gov/efile" returnVersion="2025v4.0">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2026-03-23T14:41:32-05:00</ReturnTs>
    <TaxPeriodEndDt>2025-12-31</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmEIN>161587614</PreparerFirmEIN>
      <PreparerFirmName>
        <BusinessNameLine1Txt>SARDONE ROBINSON &amp; ASSOCIATES LLP</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>115 METRO PARK</AddressLine1Txt>
        <CityNm>ROCHESTER</CityNm>
        <StateAbbreviationCd>NY</StateAbbreviationCd>
        <ZIPCd>14623</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990EZ</ReturnTypeCd>
    <TaxPeriodBeginDt>2025-01-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>166103616</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>CORTLAND SENIOR HIGH SCHOOL BOOSTERS</BusinessNameLine1Txt>
        <BusinessNameLine2Txt>CLUB</BusinessNameLine2Txt>
      </BusinessName>
      <BusinessNameControlTxt>CORT</BusinessNameControlTxt>
      <PhoneNum>6077561864</PhoneNum>
      <USAddress>
        <AddressLine1Txt>PO BOX 129</AddressLine1Txt>
        <CityNm>CORTLAND</CityNm>
        <StateAbbreviationCd>NY</StateAbbreviationCd>
        <ZIPCd>13045</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>SHAUNA BRUG</PersonNm>
      <PersonTitleTxt>TREASURER</PersonTitleTxt>
      <PhoneNum>6074235000</PhoneNum>
      <SignatureDt>2026-03-11</SignatureDt>
      <DiscussWithPaidPreparerInd>1</DiscussWithPaidPreparerInd>
    </BusinessOfficerGrp>
    <PreparerPersonGrp>
      <PreparerPersonNm>GEORGE A ROBINSON</PreparerPersonNm>
      <PTIN>P00189834</PTIN>
      <PhoneNum>5852328550</PhoneNum>
      <PreparationDt>2026-03-05</PreparationDt>
    </PreparerPersonGrp>
    <TaxYr>2025</TaxYr>
    <BuildTS>2025-03-06 01:10:19Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="5">
    <IRS990EZ documentId="RetDoc1234200001" referenceDocumentId="RetDoc1051800001 RetDoc2278000001">
      <MethodOfAccountingCashInd>X</MethodOfAccountingCashInd>
      <ScheduleBNotRequiredInd>X</ScheduleBNotRequiredInd>
      <WebsiteAddressTxt>N/A</WebsiteAddressTxt>
      <Organization501c3Ind referenceDocumentId="RetDoc1039100001">X</Organization501c3Ind>
      <TypeOfOrganizationCorpInd>X</TypeOfOrganizationCorpInd>
      <GrossReceiptsAmt>115413</GrossReceiptsAmt>
      <InfoInScheduleOPartIInd>X</InfoInScheduleOPartIInd>
      <ContributionsGiftsGrantsEtcAmt>60082</ContributionsGiftsGrantsEtcAmt>
      <FundraisingGrossIncomeAmt referenceDocumentId="RetDoc1041300001">54521</FundraisingGrossIncomeAmt>
      <SpecialEventsDirectExpensesAmt>4637</SpecialEventsDirectExpensesAmt>
      <SpecialEventsNetIncomeLossAmt>49884</SpecialEventsNetIncomeLossAmt>
      <OtherRevenueTotalAmt>810</OtherRevenueTotalAmt>
      <TotalRevenueAmt>110776</TotalRevenueAmt>
      <FeesAndOtherPymtToIndCntrctAmt>500</FeesAndOtherPymtToIndCntrctAmt>
      <OccupancyRentUtltsAndMaintAmt>206</OccupancyRentUtltsAndMaintAmt>
      <PrintingPublicationsPostageAmt>264</PrintingPublicationsPostageAmt>
      <OtherExpensesTotalAmt>110230</OtherExpensesTotalAmt>
      <TotalExpensesAmt>111200</TotalExpensesAmt>
      <ExcessOrDeficitForYearAmt>-424</ExcessOrDeficitForYearAmt>
      <NetAssetsOrFundBalancesBOYAmt>88857</NetAssetsOrFundBalancesBOYAmt>
      <OtherChangesInNetAssetsAmt>0</OtherChangesInNetAssetsAmt>
      <NetAssetsOrFundBalancesEOYAmt>88433</NetAssetsOrFundBalancesEOYAmt>
      <CashSavingsAndInvestmentsGrp>
        <BOYAmt>88857</BOYAmt>
        <EOYAmt>88433</EOYAmt>
      </CashSavingsAndInvestmentsGrp>
      <Form990TotalAssetsGrp>
        <BOYAmt>88857</BOYAmt>
        <EOYAmt>88433</EOYAmt>
      </Form990TotalAssetsGrp>
      <SumOfTotalLiabilitiesGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </SumOfTotalLiabilitiesGrp>
      <NetAssetsOrFundBalancesGrp>
        <BOYAmt>88857</BOYAmt>
        <EOYAmt>88433</EOYAmt>
      </NetAssetsOrFundBalancesGrp>
      <InfoInScheduleOPartIIIInd>X</InfoInScheduleOPartIIIInd>
      <PrimaryExemptPurposeTxt>THIS PURPOSE OF THIS ORGANIZATION SHALL BE TO ENCOURAGE AND SUPPORT THEINTERSCHOLASTIC ATHLETIC PROGRAMS OF THE CORTLAND JUNIOR/SENIOR HIGHSCHOOL, FOR THE BENEFIT OF THE BOYS AND GIRLS WHO ARE ENROLLED THERE.THIS SUPPORT SHALL CONSIST OF INTEREST, GOODWILL, PUBLICITY, AND WORKERS ASNEEDED. LIMITED FINANCIAL SUPPORT AND/OR OTHER AID WILL BE AVAILABLEWHERE NEEDED AS REQUESTED BY THE APPROPRIATE COACHES (ON THE REQUIREDREQUEST FORM), AND/OR BY SCHOOL OFFICIALS.THE BOOSTER CLUB WILL ENCOURAGE THE YOUNG PEOPLE OF THE SCHOOL DISTRICT TOPARTICIPATE IN THE MANY SPORT PROGRAMS OFFERED AND PROMOTE GOODSPORTSMANSHIP.</PrimaryExemptPurposeTxt>
      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>TO ENCOURAGE AND SUPPORT THE INTERSCHOLASTIC ATHLETIC PROGRAMS OF THE CORTLAND JUNIOR AND SENIOR HIGH SCHOOL FOR THE BENEFITT OF THE BOYS AND GIRLS WHO ARE ENROLLED THERE.</DescriptionProgramSrvcAccomTxt>
        <GrantsAndAllocationsAmt>0</GrantsAndAllocationsAmt>
        <ProgramServiceExpensesAmt>0</ProgramServiceExpensesAmt>
      </ProgramSrvcAccomplishmentGrp>
      <TotalProgramServiceExpensesAmt>0</TotalProgramServiceExpensesAmt>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>MACHELL PHELPS</PersonNm>
        <TitleTxt>PRESIDENT</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>MICHELE HUGHES</PersonNm>
        <TitleTxt>VICE PRESIDENT</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>VICKIE MYERS</PersonNm>
        <TitleTxt>SECRETARY</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>SHAUNA BRUG</PersonNm>
        <TitleTxt>TREASURER</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>JANET GRIFFIN</PersonNm>
        <TitleTxt>EXECUTIVE COMMITTEE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>DEBBIE KETCHEN</PersonNm>
        <TitleTxt>EXECUTIVE COMMITTEE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>CHRISTELLA YONTA</PersonNm>
        <TitleTxt>EXECUTIVE COMMITTEE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>KIM HAY</PersonNm>
        <TitleTxt>SPORTS ACCOUNT TREASURER</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>BRANDY STRAUFF</PersonNm>
        <TitleTxt>EXECUTIVE COMMITTEE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <InfoInScheduleOPartVInd>X</InfoInScheduleOPartVInd>
      <ActivitiesNotPreviouslyRptInd>0</ActivitiesNotPreviouslyRptInd>
      <ChgMadeToOrgnzngDocNotRptInd>0</ChgMadeToOrgnzngDocNotRptInd>
      <OrganizationHadUBIInd>0</OrganizationHadUBIInd>
      <SubjectToProxyTaxInd>0</SubjectToProxyTaxInd>
      <OrganizationDissolvedEtcInd>0</OrganizationDissolvedEtcInd>
      <DirectIndirectPltclExpendAmt>0</DirectIndirectPltclExpendAmt>
      <MadeLoansToFromOfficersInd>0</MadeLoansToFromOfficersInd>
      <TaxImposedUnderIRC4911Amt>0</TaxImposedUnderIRC4911Amt>
      <TaxImposedUnderIRC4912Amt>0</TaxImposedUnderIRC4912Amt>
      <TaxImposedUnderIRC4955Amt>0</TaxImposedUnderIRC4955Amt>
      <EngagedInExcessBenefitTransInd>0</EngagedInExcessBenefitTransInd>
      <TaxImposedOnOrganizationMgrAmt>0</TaxImposedOnOrganizationMgrAmt>
      <TaxReimbursedByOrganizationAmt>0</TaxReimbursedByOrganizationAmt>
      <ProhibitedTaxShelterTransInd>0</ProhibitedTaxShelterTransInd>
      <StatesWhereCopyOfReturnIsFldCd>NY</StatesWhereCopyOfReturnIsFldCd>
      <BooksInCareOfDetail>
        <BusinessName>
          <BusinessNameLine1Txt>SHAUNA BRUG</BusinessNameLine1Txt>
        </BusinessName>
        <USAddress>
          <AddressLine1Txt>PO BOX 129</AddressLine1Txt>
          <CityNm>CORTLAND</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>13045</ZIPCd>
        </USAddress>
        <PhoneNum>6077561864</PhoneNum>
      </BooksInCareOfDetail>
      <ForeignFinancialAccountInd>0</ForeignFinancialAccountInd>
      <ForeignOfficeInd>0</ForeignOfficeInd>
      <DonorAdvisedFndsInd>0</DonorAdvisedFndsInd>
      <OperateHospitalInd>0</OperateHospitalInd>
      <TanningServicesProvidedInd>0</TanningServicesProvidedInd>
      <RelatedOrganizationCtrlEntInd>0</RelatedOrganizationCtrlEntInd>
      <PoliticalCampaignActyInd>0</PoliticalCampaignActyInd>
      <LobbyingActivitiesInd>0</LobbyingActivitiesInd>
      <SchoolOperatingInd>0</SchoolOperatingInd>
      <TrnsfrExmptNonChrtblRltdOrgInd>0</TrnsfrExmptNonChrtblRltdOrgInd>
      <PartVIOfCompOfHghstPdEmplTxt>NONE</PartVIOfCompOfHghstPdEmplTxt>
      <PartVIHghstPdCntrctProfSrvcTxt>NONE</PartVIHghstPdCntrctProfSrvcTxt>
      <FiledScheduleAInd>1</FiledScheduleAInd>
    </IRS990EZ>
    <IRS990ScheduleA documentId="RetDoc1039100001">
      <PublicOrganization170Ind>X</PublicOrganization170Ind>
      <GiftsGrantsContriRcvd170Grp>
        <CurrentTaxYearMinus3YearsAmt>31168</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>103451</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>115769</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>60082</CurrentTaxYearAmt>
        <TotalAmt>310470</TotalAmt>
      </GiftsGrantsContriRcvd170Grp>
      <TotalCalendarYear170Grp>
        <CurrentTaxYearMinus3YearsAmt>31168</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>103451</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>115769</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>60082</CurrentTaxYearAmt>
        <TotalAmt>310470</TotalAmt>
      </TotalCalendarYear170Grp>
      <PublicSupportTotal170Amt>310470</PublicSupportTotal170Amt>
      <GrossInvestmentIncome170Grp>
        <CurrentTaxYearMinus2YearsAmt>764</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>655</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>850</CurrentTaxYearAmt>
        <TotalAmt>2269</TotalAmt>
      </GrossInvestmentIncome170Grp>
      <TotalSupportAmt>312739</TotalSupportAmt>
      <PublicSupportCY170Pct>0.99270</PublicSupportCY170Pct>
      <PublicSupportPY170Pct>0.99440</PublicSupportPY170Pct>
      <ThirtyThrPctSuprtTestsCY170Ind>X</ThirtyThrPctSuprtTestsCY170Ind>
    </IRS990ScheduleA>
    <IRS990ScheduleG documentId="RetDoc1041300001">
      <FundraisingEventInformationGrp>
        <Event1Nm>TEAM FUNDRAISING</Event1Nm>
        <GrossReceiptsEvent1Amt>54521</GrossReceiptsEvent1Amt>
        <GrossRevenueEvent1Amt>54521</GrossRevenueEvent1Amt>
        <OtherDirectExpensesEvent1Amt>4637</OtherDirectExpensesEvent1Amt>
        <GrossReceiptsTotalAmt>54521</GrossReceiptsTotalAmt>
        <GrossRevenueTotalEventsAmt>54521</GrossRevenueTotalEventsAmt>
        <OthDirectExpnssTotalEventsAmt>4637</OthDirectExpnssTotalEventsAmt>
        <DirectExpenseSummaryEventsAmt>4637</DirectExpenseSummaryEventsAmt>
        <NetIncomeSummaryAmt>49884</NetIncomeSummaryAmt>
      </FundraisingEventInformationGrp>
    </IRS990ScheduleG>
    <IRS990ScheduleO documentId="RetDoc1051800001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART I, LINE 8 - OTHER REVENUE</FormAndLineReferenceDesc>
        <ExplanationTxt>DESCRIPTION: INTREST INCOME. AMOUNT: 810.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART I, LINE 16 - OTHER EXPENSES</FormAndLineReferenceDesc>
        <ExplanationTxt>DESCRIPTION: AWARDS AND GRANTS COMMUNITY. AMOUNT: 1593. DESCRIPTION: AWARDS AND GRANTS SCHOLARSHIP. AMOUNT: 1500. DESCRIPTION: AWARDS AND GRANTS SCHOOL. AMOUNT: 25786. DESCRIPTION: OFFICE SUPPLIES. AMOUNT: 92. DESCRIPTION: CONCESSION SUPPLIES. AMOUNT: 12442. DESCRIPTION: SUPPLIES AND MATERIALS. AMOUNT: 1852. DESCRIPTION: TEAM ACTIVITIES AND EVENTS. AMOUNT: 28568. DESCRIPTION: TEAM GEAR AND EQUIPMENT. AMOUNT: 35447. DESCRIPTION: TEAM REGISTRATION FEES. AMOUNT: 1870. DESCRIPTION: MEMBERSHIPS AND SUBSCRIPTIONS. AMOUNT: 85. DESCRIPTION: MERCHANT ACCOUNT FEES. AMOUNT: 995. TOTAL TO FORM 990-EZ, LINE 16: 110230.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
    <TransferPrsnlBnftContractsDecl documentId="RetDoc2278000001">
      <DeclarationDesc>THE ORGANIZATION DID NOT, DURING THE YEAR, RECEIVE ANY FUNDS, DIRECTLY,OR INDIRECTLY, TO PAY PREMIUMS ON A PERSONAL BENEFIT CONTRACT.THE ORGANIZATION, DID NOT, DURING THE YEAR, PAY ANY PREMIUMS, DIRECTLY,OR INDIRECTLY, ON A PERSONAL BENEFIT CONTRACT.</DeclarationDesc>
    </TransferPrsnlBnftContractsDecl>
  </ReturnData>
</Return>