﻿<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" returnVersion="2018v3.1" xsi:schemaLocation="http://www.irs.gov/efile">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2019-11-13T14:25:09-08:00</ReturnTs>
    <TaxPeriodEndDt>2019-06-30</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmEIN>274516447</PreparerFirmEIN>
      <PreparerFirmName>
        <BusinessNameLine1Txt>ELIZABETH A C QUIST CPA EA</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>PO BOX 372</AddressLine1Txt>
        <CityNm>OCCOQUAN</CityNm>
        <StateAbbreviationCd>VA</StateAbbreviationCd>
        <ZIPCd>221250372</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990EZ</ReturnTypeCd>
    <TaxPeriodBeginDt>2018-07-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>331004323</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>OSBOURN PARK HIGH SCHOOL ATHLETIC</BusinessNameLine1Txt>
        <BusinessNameLine2Txt>BOOSTER CLUB</BusinessNameLine2Txt>
      </BusinessName>
      <BusinessNameControlTxt>OSBO</BusinessNameControlTxt>
      <PhoneNum>7033656500</PhoneNum>
      <USAddress>
        <AddressLine1Txt>8909 EUCLID AVENUE</AddressLine1Txt>
        <CityNm>MANASSAS</CityNm>
        <StateAbbreviationCd>VA</StateAbbreviationCd>
        <ZIPCd>20111</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>Christine Krebs</PersonNm>
      <PersonTitleTxt>Treasurer</PersonTitleTxt>
      <SignatureDt>2019-11-13</SignatureDt>
      <DiscussWithPaidPreparerInd>true</DiscussWithPaidPreparerInd>
    </BusinessOfficerGrp>
    <PreparerPersonGrp>
      <PreparerPersonNm>Elizabeth A C Quist</PreparerPersonNm>
      <PTIN>P01269026</PTIN>
      <PhoneNum>7035971370</PhoneNum>
      <SelfEmployedInd>X</SelfEmployedInd>
    </PreparerPersonGrp>
    <TaxYr>2018</TaxYr>
    <BuildTS>2020-03-31 21:24:44Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="4">
    <IRS990EZ documentId="IRS990EZ" referenceDocumentId="IRS990ScheduleO TransfersPersonalBenefitsContr" softwareId="18007218" softwareVersionNum="2018v3.1">
      <MethodOfAccountingCashInd>X</MethodOfAccountingCashInd>
      <ScheduleBNotRequiredInd>X</ScheduleBNotRequiredInd>
      <WebsiteAddressTxt>www.OsbournParkHS.rschoolteams.com</WebsiteAddressTxt>
      <Organization501c3Ind referenceDocumentId="IRS990ScheduleA">X</Organization501c3Ind>
      <GrossReceiptsAmt>175859</GrossReceiptsAmt>
      <InfoInScheduleOPartIInd>X</InfoInScheduleOPartIInd>
      <ContributionsGiftsGrantsEtcAmt>11059</ContributionsGiftsGrantsEtcAmt>
      <ProgramServiceRevenueAmt>96330</ProgramServiceRevenueAmt>
      <InvestmentIncomeAmt>1</InvestmentIncomeAmt>
      <CostOrOtherBasisExpenseSaleAmt>0</CostOrOtherBasisExpenseSaleAmt>
      <GamingGrossIncomeAmt referenceDocumentId="IRS990ScheduleG">5992</GamingGrossIncomeAmt>
      <FundraisingGrossIncomeAmt fndrsngEventContriPrevRptAmt="10873" referenceDocumentId="IRS990ScheduleG">13003</FundraisingGrossIncomeAmt>
      <SpecialEventsDirectExpensesAmt>11390</SpecialEventsDirectExpensesAmt>
      <SpecialEventsNetIncomeLossAmt>7605</SpecialEventsNetIncomeLossAmt>
      <GrossSalesOfInventoryAmt>49474</GrossSalesOfInventoryAmt>
      <CostOfGoodsSoldAmt>23352</CostOfGoodsSoldAmt>
      <GrossProfitLossSlsOfInvntryAmt>26122</GrossProfitLossSlsOfInvntryAmt>
      <TotalRevenueAmt>141117</TotalRevenueAmt>
      <GrantsAndSimilarAmountsPaidAmt>3000</GrantsAndSimilarAmountsPaidAmt>
      <FeesAndOtherPymtToIndCntrctAmt>765</FeesAndOtherPymtToIndCntrctAmt>
      <OtherExpensesTotalAmt>136135</OtherExpensesTotalAmt>
      <TotalExpensesAmt>139900</TotalExpensesAmt>
      <ExcessOrDeficitForYearAmt>1217</ExcessOrDeficitForYearAmt>
      <NetAssetsOrFundBalancesBOYAmt>54931</NetAssetsOrFundBalancesBOYAmt>
      <NetAssetsOrFundBalancesEOYAmt>56148</NetAssetsOrFundBalancesEOYAmt>
      <CashSavingsAndInvestmentsGrp>
        <BOYAmt>54931</BOYAmt>
        <EOYAmt>56148</EOYAmt>
      </CashSavingsAndInvestmentsGrp>
      <Form990TotalAssetsGrp>
        <BOYAmt>54931</BOYAmt>
        <EOYAmt>56148</EOYAmt>
      </Form990TotalAssetsGrp>
      <NetAssetsOrFundBalancesGrp>
        <BOYAmt>54931</BOYAmt>
        <EOYAmt>56148</EOYAmt>
      </NetAssetsOrFundBalancesGrp>
      <PrimaryExemptPurposeTxt>The purpose of the organization is to promote the educational, physical and moral welfare of the students of Osbourn Park High School through direct involvement, financial and moral support of the total athletic program of the high school, including both intramural and interscholastic competition.</PrimaryExemptPurposeTxt>
      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>Representing and supporting 2,100 student athletes at Osbourn Park High School, the Athletic Booster Club supplements existing school budgets in the areas of equipment, uniforms, officials, field maintenance, security, training facilities and transportation to host all of these sports each season. Capital and facility improvements are also a part of the focus of the Booster Club.</DescriptionProgramSrvcAccomTxt>
        <GrantsAndAllocationsAmt>135097</GrantsAndAllocationsAmt>
        <ProgramServiceExpensesAmt>3000</ProgramServiceExpensesAmt>
      </ProgramSrvcAccomplishmentGrp>
      <TotalProgramServiceExpensesAmt>135097</TotalProgramServiceExpensesAmt>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Nancy Tebell</PersonNm>
        <TitleTxt>President/Secy</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>10.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Shelley Cash</PersonNm>
        <TitleTxt>Vice President</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>2.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Christine Krebs</PersonNm>
        <TitleTxt>Treasurer</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>10.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Keith Laine</PersonNm>
        <TitleTxt>HS Athl. Direct</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <ActivitiesNotPreviouslyRptInd>false</ActivitiesNotPreviouslyRptInd>
      <ChgMadeToOrgnzngDocNotRptInd>false</ChgMadeToOrgnzngDocNotRptInd>
      <OrganizationHadUBIInd>false</OrganizationHadUBIInd>
      <OrganizationFiled990TInd>false</OrganizationFiled990TInd>
      <SubjectToProxyTaxInd>false</SubjectToProxyTaxInd>
      <OrganizationDissolvedEtcInd>false</OrganizationDissolvedEtcInd>
      <Form1120PolFiledInd>false</Form1120PolFiledInd>
      <MadeLoansToFromOfficersInd>false</MadeLoansToFromOfficersInd>
      <InitiationFeesAndCapContriAmt>0</InitiationFeesAndCapContriAmt>
      <GrossReceiptsForPublicUseAmt>0</GrossReceiptsForPublicUseAmt>
      <EngagedInExcessBenefitTransInd>false</EngagedInExcessBenefitTransInd>
      <ProhibitedTaxShelterTransInd>false</ProhibitedTaxShelterTransInd>
      <StatesWhereCopyOfReturnIsFldCd>VA</StatesWhereCopyOfReturnIsFldCd>
      <BooksInCareOfDetail>
        <PersonNm>THE ORGANIZATION</PersonNm>
        <USAddress>
          <AddressLine1Txt>8909 EUCLID AVENUE</AddressLine1Txt>
          <CityNm>MANASSAS</CityNm>
          <StateAbbreviationCd>VA</StateAbbreviationCd>
          <ZIPCd>201112498</ZIPCd>
        </USAddress>
        <PhoneNum>7033656500</PhoneNum>
      </BooksInCareOfDetail>
      <ForeignFinancialAccountInd>false</ForeignFinancialAccountInd>
      <ForeignOfficeInd>false</ForeignOfficeInd>
      <DonorAdvisedFndsInd>false</DonorAdvisedFndsInd>
      <OperateHospitalInd>false</OperateHospitalInd>
      <TanningServicesProvidedInd>false</TanningServicesProvidedInd>
      <Form720FiledInd>false</Form720FiledInd>
      <RelatedOrganizationCtrlEntInd>false</RelatedOrganizationCtrlEntInd>
      <TransactionWithControlEntInd>false</TransactionWithControlEntInd>
      <PoliticalCampaignActyInd>false</PoliticalCampaignActyInd>
      <LobbyingActivitiesInd>false</LobbyingActivitiesInd>
      <SchoolOperatingInd>false</SchoolOperatingInd>
      <TrnsfrExmptNonChrtblRltdOrgInd>false</TrnsfrExmptNonChrtblRltdOrgInd>
      <RelatedOrgSect527OrgInd>false</RelatedOrgSect527OrgInd>
      <PartVIOfCompOfHghstPdEmplTxt>NONE</PartVIOfCompOfHghstPdEmplTxt>
      <PartVIHghstPdCntrctProfSrvcTxt>NONE</PartVIHghstPdCntrctProfSrvcTxt>
      <FiledScheduleAInd>true</FiledScheduleAInd>
    </IRS990EZ>
    <IRS990ScheduleA documentId="IRS990ScheduleA" softwareId="18007218" softwareVersionNum="2018v3.1">
      <PubliclySupportedOrg509a2Ind>X</PubliclySupportedOrg509a2Ind>
      <GiftsGrantsContrisRcvd509Grp>
        <CurrentTaxYearMinus4YearsAmt>13797</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>2153</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>14284</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>96</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>186</CurrentTaxYearAmt>
        <TotalAmt>30516</TotalAmt>
      </GiftsGrantsContrisRcvd509Grp>
      <GrossReceiptsAdmissionsGrp>
        <CurrentTaxYearMinus4YearsAmt>67078</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>58267</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>54648</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>51534</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>49474</CurrentTaxYearAmt>
        <TotalAmt>281001</TotalAmt>
      </GrossReceiptsAdmissionsGrp>
      <GrossReceiptsNonUnrltBusGrp>
        <CurrentTaxYearMinus4YearsAmt>46877</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>65740</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>64518</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>87091</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>116502</CurrentTaxYearAmt>
        <TotalAmt>380728</TotalAmt>
      </GrossReceiptsNonUnrltBusGrp>
      <TaxRevLeviedOrgnztnlBnft509Grp>
        <TotalAmt>0</TotalAmt>
      </TaxRevLeviedOrgnztnlBnft509Grp>
      <GovtFurnSrvcFcltsVl509Grp>
        <TotalAmt>0</TotalAmt>
      </GovtFurnSrvcFcltsVl509Grp>
      <Total509Grp>
        <CurrentTaxYearMinus4YearsAmt>127752</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>126160</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>133450</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>138721</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>166162</CurrentTaxYearAmt>
        <TotalAmt>692245</TotalAmt>
      </Total509Grp>
      <AmountsRcvdDsqlfyPersonGrp>
        <TotalAmt>0</TotalAmt>
      </AmountsRcvdDsqlfyPersonGrp>
      <SubstantialContributorsAmtGrp>
        <TotalAmt>0</TotalAmt>
      </SubstantialContributorsAmtGrp>
      <PublicSupportTotal509Amt>692245</PublicSupportTotal509Amt>
      <GrossInvestmentIncome509Grp>
        <CurrentTaxYearMinus4YearsAmt>187</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>151</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>170</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>52</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>1</CurrentTaxYearAmt>
        <TotalAmt>561</TotalAmt>
      </GrossInvestmentIncome509Grp>
      <Post1975UBTIGrp>
        <TotalAmt>0</TotalAmt>
      </Post1975UBTIGrp>
      <InvestmentIncomeAndUBTIGrp>
        <CurrentTaxYearMinus4YearsAmt>187</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>151</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>170</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>52</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>1</CurrentTaxYearAmt>
        <TotalAmt>561</TotalAmt>
      </InvestmentIncomeAndUBTIGrp>
      <NetIncomeFromOtherUBIGrp>
        <TotalAmt>0</TotalAmt>
      </NetIncomeFromOtherUBIGrp>
      <OtherIncome509Grp>
        <CurrentTaxYearMinus4YearsAmt>14448</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>15544</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>14448</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>12081</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>9696</CurrentTaxYearAmt>
        <TotalAmt>66217</TotalAmt>
      </OtherIncome509Grp>
      <TotalSupportCalendarYearGrp>
        <CurrentTaxYearMinus4YearsAmt>142387</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>141855</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>148068</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>150854</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>175859</CurrentTaxYearAmt>
        <TotalAmt>759023</TotalAmt>
      </TotalSupportCalendarYearGrp>
      <PublicSupportCY509Pct>0.91200</PublicSupportCY509Pct>
      <PublicSupportPY509Pct>0.75350</PublicSupportPY509Pct>
      <InvestmentIncomeCYPct>0.00070</InvestmentIncomeCYPct>
      <InvestmentIncomePYPct>0.00110</InvestmentIncomePYPct>
      <ThirtyThrPctSuprtTestsCY509Ind>X</ThirtyThrPctSuprtTestsCY509Ind>
      <Form990ScheduleAPartVIGrp>
        <FormAndLineReferenceDesc>Support Schedule: Additional Supplemental Information</FormAndLineReferenceDesc>
        <ExplanationTxt>The organization has reclassified certain items in columns 2014-2017 originally reported in line 12 - Other Income to line 3 of Schedule A, Part III. The items reclassified to line 3 include gross receipts from activities that aren't an unrelated trade or business.</ExplanationTxt>
      </Form990ScheduleAPartVIGrp>
    </IRS990ScheduleA>
    <IRS990ScheduleG documentId="IRS990ScheduleG" softwareId="18007218" softwareVersionNum="2018v3.1">
      <FundraisingEventInformationGrp>
        <Event1Nm>Golf Tournament</Event1Nm>
        <GrossReceiptsEvent1Amt>20172</GrossReceiptsEvent1Amt>
        <CharitableContriEvent1Amt>10873</CharitableContriEvent1Amt>
        <GrossRevenueEvent1Amt>9299</GrossRevenueEvent1Amt>
        <NonCashPrizesEvent1Amt>1736</NonCashPrizesEvent1Amt>
        <RentFacilityCostsEvent1Amt>7340</RentFacilityCostsEvent1Amt>
        <OtherDirectExpensesEvent1Amt>511</OtherDirectExpensesEvent1Amt>
        <GrossReceiptsTotalAmt>20172</GrossReceiptsTotalAmt>
        <CharitableContributionsTotAmt>10873</CharitableContributionsTotAmt>
        <GrossRevenueTotalEventsAmt>9299</GrossRevenueTotalEventsAmt>
        <NonCashPrizesTotalEventsAmt>1736</NonCashPrizesTotalEventsAmt>
        <RentFcltyCostsTotalEventsAmt>7340</RentFcltyCostsTotalEventsAmt>
        <OthDirectExpnssTotalEventsAmt>511</OthDirectExpnssTotalEventsAmt>
        <DirectExpenseSummaryEventsAmt>9587</DirectExpenseSummaryEventsAmt>
        <NetIncomeSummaryAmt>-288</NetIncomeSummaryAmt>
      </FundraisingEventInformationGrp>
    </IRS990ScheduleG>
    <IRS990ScheduleO documentId="IRS990ScheduleO" softwareId="18007218" softwareVersionNum="2018v3.1">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other Expenses.1002</FormAndLineReferenceDesc>
        <ExplanationTxt>Office Expenses $718</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other Expenses.1007</FormAndLineReferenceDesc>
        <ExplanationTxt>Conferences, Conventions, and Meetings $46015</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other Expenses.1012</FormAndLineReferenceDesc>
        <ExplanationTxt>Insurance $320</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other Expenses.1</FormAndLineReferenceDesc>
        <ExplanationTxt>Uniforms $34430</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other Expenses.2</FormAndLineReferenceDesc>
        <ExplanationTxt>Team Supplies $33754</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other Expenses.3</FormAndLineReferenceDesc>
        <ExplanationTxt>Equipment &amp; Maintenance $20898</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>