﻿<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" returnVersion="2023v5.0">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2024-11-10T22:30:03Z</ReturnTs>
    <TaxPeriodEndDt>2024-04-30</TaxPeriodEndDt>
    <ReturnTypeCd>990EZ</ReturnTypeCd>
    <TaxPeriodBeginDt>2023-05-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>310928840</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>WESTERVILLE SOUTH HIGH SCHOOL INSTRUMENTAL MUSIC BOOSTERS INC</BusinessNameLine1Txt>
      </BusinessName>
      <BusinessNameControlTxt>WEST</BusinessNameControlTxt>
      <PhoneNum>0000000000</PhoneNum>
      <USAddress>
        <AddressLine1Txt>PO BOX 641</AddressLine1Txt>
        <CityNm>WESTERVILLE</CityNm>
        <StateAbbreviationCd>OH</StateAbbreviationCd>
        <ZIPCd>43086</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>Tiffany Bettac</PersonNm>
      <PersonTitleTxt>Treasurer</PersonTitleTxt>
      <PhoneNum>0000000000</PhoneNum>
      <SignatureDt>2024-11-10</SignatureDt>
    </BusinessOfficerGrp>
    <IRSResponsiblePrtyInfoCurrInd>true</IRSResponsiblePrtyInfoCurrInd>
    <TaxYr>2023</TaxYr>
    <BuildTS>2024-10-15 13:58:12Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="4">
    <IRS990EZ documentId="POSTCARDb3474db">
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <ScheduleBNotRequiredInd>X</ScheduleBNotRequiredInd>
      <Organization501c3Ind referenceDocumentId="990xScheduleA" referenceDocumentName="IRS990ScheduleA">X</Organization501c3Ind>
      <TypeOfOrganizationCorpInd>X</TypeOfOrganizationCorpInd>
      <GrossReceiptsAmt>82370</GrossReceiptsAmt>
      <ContributionsGiftsGrantsEtcAmt>12173</ContributionsGiftsGrantsEtcAmt>
      <ProgramServiceRevenueAmt>0</ProgramServiceRevenueAmt>
      <MembershipDuesAmt>27621</MembershipDuesAmt>
      <InvestmentIncomeAmt>8</InvestmentIncomeAmt>
      <SaleOfAssetsGrossAmt>0</SaleOfAssetsGrossAmt>
      <CostOrOtherBasisExpenseSaleAmt>0</CostOrOtherBasisExpenseSaleAmt>
      <GainOrLossFromSaleOfAssetsAmt>0</GainOrLossFromSaleOfAssetsAmt>
      <GamingGrossIncomeAmt>0</GamingGrossIncomeAmt>
      <FundraisingGrossIncomeAmt>40325</FundraisingGrossIncomeAmt>
      <SpecialEventsDirectExpensesAmt>0</SpecialEventsDirectExpensesAmt>
      <SpecialEventsNetIncomeLossAmt>40325</SpecialEventsNetIncomeLossAmt>
      <GrossSalesOfInventoryAmt>1635</GrossSalesOfInventoryAmt>
      <CostOfGoodsSoldAmt>0</CostOfGoodsSoldAmt>
      <GrossProfitLossSlsOfInvntryAmt>2243</GrossProfitLossSlsOfInvntryAmt>
      <OtherRevenueTotalAmt>0</OtherRevenueTotalAmt>
      <TotalRevenueAmt>82370</TotalRevenueAmt>
      <GrantsAndSimilarAmountsPaidAmt>2040</GrantsAndSimilarAmountsPaidAmt>
      <BenefitsPaidToOrForMembersAmt>0</BenefitsPaidToOrForMembersAmt>
      <SalariesOtherCompEmplBnftAmt>0</SalariesOtherCompEmplBnftAmt>
      <FeesAndOtherPymtToIndCntrctAmt>0</FeesAndOtherPymtToIndCntrctAmt>
      <OccupancyRentUtltsAndMaintAmt>0</OccupancyRentUtltsAndMaintAmt>
      <PrintingPublicationsPostageAmt>0</PrintingPublicationsPostageAmt>
      <OtherExpensesTotalAmt>68978</OtherExpensesTotalAmt>
      <TotalExpensesAmt>71018</TotalExpensesAmt>
      <ExcessOrDeficitForYearAmt>11352</ExcessOrDeficitForYearAmt>
      <NetAssetsOrFundBalancesBOYAmt>105359</NetAssetsOrFundBalancesBOYAmt>
      <OtherChangesInNetAssetsAmt>0</OtherChangesInNetAssetsAmt>
      <NetAssetsOrFundBalancesEOYAmt>116711</NetAssetsOrFundBalancesEOYAmt>
      <CashSavingsAndInvestmentsGrp>
        <BOYAmt>82913</BOYAmt>
        <EOYAmt>76895</EOYAmt>
      </CashSavingsAndInvestmentsGrp>
      <LandAndBuildingsGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </LandAndBuildingsGrp>
      <OtherAssetsTotalDetail>
        <BOYAmt>41980</BOYAmt>
        <EOYAmt>39816</EOYAmt>
      </OtherAssetsTotalDetail>
      <Form990TotalAssetsGrp>
        <BOYAmt>124893</BOYAmt>
        <EOYAmt>116711</EOYAmt>
      </Form990TotalAssetsGrp>
      <SumOfTotalLiabilitiesGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </SumOfTotalLiabilitiesGrp>
      <NetAssetsOrFundBalancesGrp>
        <BOYAmt>124893</BOYAmt>
        <EOYAmt>116711</EOYAmt>
      </NetAssetsOrFundBalancesGrp>
      <PrimaryExemptPurposeTxt>Provide instruction competition opportunities awards instrument repairs for the Westerville South music program consisting of approximately 200 students</PrimaryExemptPurposeTxt>
      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>Provide instruction competition opportunities awards instrument repairs for the Westerville South music program consisting of approximately 200 students</DescriptionProgramSrvcAccomTxt>
        <ProgramServiceExpensesAmt>72883</ProgramServiceExpensesAmt>
      </ProgramSrvcAccomplishmentGrp>
      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>Scholarships granted to students in financial need to cover membership fees and a college scholarship to a senior that has participated in the Marching Band program</DescriptionProgramSrvcAccomTxt>
        <ProgramServiceExpensesAmt>1540</ProgramServiceExpensesAmt>
      </ProgramSrvcAccomplishmentGrp>
      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>College scholarship to a senior that has participated in the Marching Band program</DescriptionProgramSrvcAccomTxt>
        <ProgramServiceExpensesAmt>500</ProgramServiceExpensesAmt>
      </ProgramSrvcAccomplishmentGrp>
      <TotalProgramServiceExpensesAmt>74923</TotalProgramServiceExpensesAmt>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Tina Beaty</PersonNm>
        <TitleTxt>President</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>10.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Kevin Weaver</PersonNm>
        <TitleTxt>Vice President</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>10.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Katy Weaver</PersonNm>
        <TitleTxt>Financial Secretary</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>5.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Tiffany Bettac</PersonNm>
        <TitleTxt>Treasurer</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>7.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Trica Ryckman</PersonNm>
        <TitleTxt>Secretary</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>3.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <ActivitiesNotPreviouslyRptInd>false</ActivitiesNotPreviouslyRptInd>
      <ChgMadeToOrgnzngDocNotRptInd>false</ChgMadeToOrgnzngDocNotRptInd>
      <OrganizationHadUBIInd>false</OrganizationHadUBIInd>
      <SubjectToProxyTaxInd>false</SubjectToProxyTaxInd>
      <OrganizationDissolvedEtcInd>false</OrganizationDissolvedEtcInd>
      <Form1120PolFiledInd>false</Form1120PolFiledInd>
      <MadeLoansToFromOfficersInd>false</MadeLoansToFromOfficersInd>
      <EngagedInExcessBenefitTransInd>false</EngagedInExcessBenefitTransInd>
      <ProhibitedTaxShelterTransInd>false</ProhibitedTaxShelterTransInd>
      <BooksInCareOfDetail>
        <PersonNm>Tiffany Bettac</PersonNm>
        <USAddress>
          <AddressLine1Txt>653 Glacier Pass</AddressLine1Txt>
          <CityNm>Westerville</CityNm>
          <StateAbbreviationCd>OH</StateAbbreviationCd>
          <ZIPCd>43081</ZIPCd>
        </USAddress>
        <PhoneNum>7603012445</PhoneNum>
      </BooksInCareOfDetail>
      <ForeignFinancialAccountInd>
                            false
                        </ForeignFinancialAccountInd>
      <ForeignOfficeInd>
                            false
                        </ForeignOfficeInd>
      <DonorAdvisedFndsInd>false</DonorAdvisedFndsInd>
      <OperateHospitalInd>false</OperateHospitalInd>
      <TanningServicesProvidedInd>false</TanningServicesProvidedInd>
      <RelatedOrganizationCtrlEntInd>false</RelatedOrganizationCtrlEntInd>
      <TransactionWithControlEntInd>false</TransactionWithControlEntInd>
      <PoliticalCampaignActyInd>false</PoliticalCampaignActyInd>
      <LobbyingActivitiesInd>false</LobbyingActivitiesInd>
      <SchoolOperatingInd>false</SchoolOperatingInd>
      <TrnsfrExmptNonChrtblRltdOrgInd>false</TrnsfrExmptNonChrtblRltdOrgInd>
      <PartVIOfCompOfHghstPdEmplTxt>NONE</PartVIOfCompOfHghstPdEmplTxt>
      <PartVIHghstPdCntrctProfSrvcTxt>NONE</PartVIHghstPdCntrctProfSrvcTxt>
      <FiledScheduleAInd>true</FiledScheduleAInd>
    </IRS990EZ>
    <IRS990ScheduleA documentId="990xScheduleA">
      <PubliclySupportedOrg509a2Ind>X</PubliclySupportedOrg509a2Ind>
      <GiftsGrantsContriRcvd170Grp></GiftsGrantsContriRcvd170Grp>
      <TaxRevLeviedOrgnztnlBnft170Grp></TaxRevLeviedOrgnztnlBnft170Grp>
      <GovtFurnSrvcFcltsVl170Grp></GovtFurnSrvcFcltsVl170Grp>
      <TotalCalendarYear170Grp></TotalCalendarYear170Grp>
      <GrossInvestmentIncome170Grp></GrossInvestmentIncome170Grp>
      <UnrelatedBusinessNetIncm170Grp></UnrelatedBusinessNetIncm170Grp>
      <OtherIncome170Grp></OtherIncome170Grp>
      <PublicSupportCY170Pct>0</PublicSupportCY170Pct>
      <PublicSupportPY170Pct>0</PublicSupportPY170Pct>
      <GiftsGrantsContrisRcvd509Grp>
        <CurrentTaxYearMinus4YearsAmt>42992</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>47823</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>46420</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>41240</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>39794</CurrentTaxYearAmt>
        <TotalAmt>218269</TotalAmt>
      </GiftsGrantsContrisRcvd509Grp>
      <GrossReceiptsAdmissionsGrp></GrossReceiptsAdmissionsGrp>
      <GrossReceiptsNonUnrltBusGrp>
        <CurrentTaxYearMinus4YearsAmt>57870</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>12860</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>65373</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>62921</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>40326</CurrentTaxYearAmt>
        <TotalAmt>239350</TotalAmt>
      </GrossReceiptsNonUnrltBusGrp>
      <TaxRevLeviedOrgnztnlBnft509Grp></TaxRevLeviedOrgnztnlBnft509Grp>
      <GovtFurnSrvcFcltsVl509Grp></GovtFurnSrvcFcltsVl509Grp>
      <Total509Grp>
        <CurrentTaxYearMinus4YearsAmt>100862</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>60683</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>111793</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>104161</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>80120</CurrentTaxYearAmt>
        <TotalAmt>457619</TotalAmt>
      </Total509Grp>
      <AmountsRcvdDsqlfyPersonGrp></AmountsRcvdDsqlfyPersonGrp>
      <SubstantialContributorsAmtGrp></SubstantialContributorsAmtGrp>
      <SubstAndDsqlfyPrsnsTotGrp></SubstAndDsqlfyPrsnsTotGrp>
      <PublicSupportTotal509Amt>457619</PublicSupportTotal509Amt>
      <GrossInvestmentIncome509Grp></GrossInvestmentIncome509Grp>
      <Post1975UBTIGrp></Post1975UBTIGrp>
      <InvestmentIncomeAndUBTIGrp></InvestmentIncomeAndUBTIGrp>
      <NetIncomeFromOtherUBIGrp></NetIncomeFromOtherUBIGrp>
      <OtherIncome509Grp></OtherIncome509Grp>
      <TotalSupportCalendarYearGrp>
        <CurrentTaxYearMinus4YearsAmt>100862</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>60683</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>111793</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>104161</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>80120</CurrentTaxYearAmt>
        <TotalAmt>457619</TotalAmt>
      </TotalSupportCalendarYearGrp>
      <PublicSupportCY509Pct>0</PublicSupportCY509Pct>
      <PublicSupportPY509Pct>0</PublicSupportPY509Pct>
      <InvestmentIncomeCYPct>0</InvestmentIncomeCYPct>
      <InvestmentIncomePYPct>0</InvestmentIncomePYPct>
      <Form990SchAType3FuncIntGrp></Form990SchAType3FuncIntGrp>
    </IRS990ScheduleA>
    <IRS990ScheduleG documentId="990xScheduleG">
      <FundraisingEventInformationGrp>
        <Event1Nm>Craft Show</Event1Nm>
        <GrossReceiptsEvent1Amt>13771</GrossReceiptsEvent1Amt>
        <CharitableContriEvent1Amt>0</CharitableContriEvent1Amt>
        <GrossRevenueEvent1Amt>13771</GrossRevenueEvent1Amt>
        <CashPrizesEvent1Amt>0</CashPrizesEvent1Amt>
        <NonCashPrizesEvent1Amt>0</NonCashPrizesEvent1Amt>
        <RentFacilityCostsEvent1Amt>694</RentFacilityCostsEvent1Amt>
        <FoodAndBeverageEvent1Amt>372</FoodAndBeverageEvent1Amt>
        <EntertainmentEvent1Amt>0</EntertainmentEvent1Amt>
        <OtherDirectExpensesEvent1Amt>326</OtherDirectExpensesEvent1Amt>
        <Event2Nm>Marching Show</Event2Nm>
        <GrossReceiptsEvent2Amt>7865</GrossReceiptsEvent2Amt>
        <CharitableContriEvent2Amt>0</CharitableContriEvent2Amt>
        <GrossRevenueEvent2Amt>7865</GrossRevenueEvent2Amt>
        <CashPrizesEvent2Amt>0</CashPrizesEvent2Amt>
        <NonCashPrizesEvent2Amt>0</NonCashPrizesEvent2Amt>
        <RentFacilityCostsEvent2Amt>0</RentFacilityCostsEvent2Amt>
        <FoodAndBeverageEvent2Amt>0</FoodAndBeverageEvent2Amt>
        <EntertainmentEvent2Amt>0</EntertainmentEvent2Amt>
        <OtherDirectExpensesEvent2Amt>0</OtherDirectExpensesEvent2Amt>
        <OtherEventsTotalCnt>1</OtherEventsTotalCnt>
        <GrossReceiptsOtherEventsAmt>18690</GrossReceiptsOtherEventsAmt>
        <CharitableContriOtherEventsAmt>0</CharitableContriOtherEventsAmt>
        <GrossRevenueOtherEventsAmt>18690</GrossRevenueOtherEventsAmt>
        <CashPrizesOtherEventsAmt>0</CashPrizesOtherEventsAmt>
        <NonCashPrizesOtherEventsAmt>0</NonCashPrizesOtherEventsAmt>
        <RentFcltyCostsOtherEventsAmt>0</RentFcltyCostsOtherEventsAmt>
        <FoodAndBeverageOtherEventsAmt>571</FoodAndBeverageOtherEventsAmt>
        <EntertainmentOtherEventsAmt>0</EntertainmentOtherEventsAmt>
        <OthDirectExpnssOtherEventsAmt>4685</OthDirectExpnssOtherEventsAmt>
        <GrossReceiptsTotalAmt>40326</GrossReceiptsTotalAmt>
        <CharitableContributionsTotAmt>0</CharitableContributionsTotAmt>
        <GrossRevenueTotalEventsAmt>40326</GrossRevenueTotalEventsAmt>
        <CashPrizesTotalEventsAmt>0</CashPrizesTotalEventsAmt>
        <NonCashPrizesTotalEventsAmt>0</NonCashPrizesTotalEventsAmt>
        <RentFcltyCostsTotalEventsAmt>694</RentFcltyCostsTotalEventsAmt>
        <FoodAndBeverageTotalEventsAmt>943</FoodAndBeverageTotalEventsAmt>
        <EntertainmentTotalEventsAmt>0</EntertainmentTotalEventsAmt>
        <OthDirectExpnssTotalEventsAmt>5011</OthDirectExpnssTotalEventsAmt>
        <DirectExpenseSummaryEventsAmt>6648</DirectExpenseSummaryEventsAmt>
        <NetIncomeSummaryAmt>33678</NetIncomeSummaryAmt>
      </FundraisingEventInformationGrp>
    </IRS990ScheduleG>
    <IRS990ScheduleO documentId="990xScheduleO">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule O:</FormAndLineReferenceDesc>
        <ExplanationTxt>Part 1.10: Scholarships granted to students in financial need to cover membership fees and a college scholarship to a senior that has participated in the marching band program. Part 1.16: Additional program fees Part 2.24: uniforms, fixed assets including trailers</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>