﻿<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" returnVersion="2023v5.0">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2024-12-10T17:00:54-05:00</ReturnTs>
    <TaxPeriodEndDt>2024-05-31</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmEIN>431871840</PreparerFirmEIN>
      <PreparerFirmName>
        <BusinessNameLine1Txt>BLOCK ADVISORS</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>3815 N MULFORD RD</AddressLine1Txt>
        <CityNm>ROCKFORD</CityNm>
        <StateAbbreviationCd>IL</StateAbbreviationCd>
        <ZIPCd>61114</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990EZ</ReturnTypeCd>
    <TaxPeriodBeginDt>2023-06-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>260542782</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>BLUE THUNDER BOOSTERS INC</BusinessNameLine1Txt>
      </BusinessName>
      <BusinessNameControlTxt>BLUE</BusinessNameControlTxt>
      <PhoneNum>8152989641</PhoneNum>
      <USAddress>
        <AddressLine1Txt>PO BOX 202</AddressLine1Txt>
        <CityNm>BELVIDERE</CityNm>
        <StateAbbreviationCd>IL</StateAbbreviationCd>
        <ZIPCd>61008</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>HOLLY BROWN</PersonNm>
      <PersonTitleTxt>TREASURER</PersonTitleTxt>
      <PhoneNum>8477573215</PhoneNum>
      <SignatureDt>2024-11-04</SignatureDt>
    </BusinessOfficerGrp>
    <IRSResponsiblePrtyInfoCurrInd>true</IRSResponsiblePrtyInfoCurrInd>
    <PreparerPersonGrp>
      <PreparerPersonNm>TINA HENDRIXSON</PreparerPersonNm>
      <PTIN>P01361798</PTIN>
      <PhoneNum>8152821288</PhoneNum>
      <PreparationDt>2024-11-04</PreparationDt>
    </PreparerPersonGrp>
    <TaxYr>2023</TaxYr>
    <BuildTS>2024-10-15 13:58:12Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="4">
    <IRS990EZ documentId="RetDoc1" referenceDocumentId="RetDoc3">
      <MethodOfAccountingCashInd>X</MethodOfAccountingCashInd>
      <ScheduleBNotRequiredInd>X</ScheduleBNotRequiredInd>
      <WebsiteAddressTxt>WWW.BLUETHUNDERBOOSTERS.COM</WebsiteAddressTxt>
      <Organization501c3Ind referenceDocumentId="RetDoc4">X</Organization501c3Ind>
      <TypeOfOrganizationCorpInd>X</TypeOfOrganizationCorpInd>
      <GrossReceiptsAmt>99957</GrossReceiptsAmt>
      <InfoInScheduleOPartIInd>X</InfoInScheduleOPartIInd>
      <ContributionsGiftsGrantsEtcAmt>4578</ContributionsGiftsGrantsEtcAmt>
      <InvestmentIncomeAmt>165</InvestmentIncomeAmt>
      <FundraisingGrossIncomeAmt referenceDocumentId="RetDoc2">95214</FundraisingGrossIncomeAmt>
      <SpecialEventsDirectExpensesAmt>68438</SpecialEventsDirectExpensesAmt>
      <SpecialEventsNetIncomeLossAmt>26776</SpecialEventsNetIncomeLossAmt>
      <TotalRevenueAmt>31519</TotalRevenueAmt>
      <FeesAndOtherPymtToIndCntrctAmt>510</FeesAndOtherPymtToIndCntrctAmt>
      <OtherExpensesTotalAmt>28517</OtherExpensesTotalAmt>
      <TotalExpensesAmt>29027</TotalExpensesAmt>
      <ExcessOrDeficitForYearAmt>2492</ExcessOrDeficitForYearAmt>
      <NetAssetsOrFundBalancesBOYAmt>103087</NetAssetsOrFundBalancesBOYAmt>
      <NetAssetsOrFundBalancesEOYAmt>105579</NetAssetsOrFundBalancesEOYAmt>
      <InfoInScheduleOPartIIInd>X</InfoInScheduleOPartIIInd>
      <CashSavingsAndInvestmentsGrp>
        <BOYAmt>95588</BOYAmt>
        <EOYAmt>97387</EOYAmt>
      </CashSavingsAndInvestmentsGrp>
      <OtherAssetsTotalDetail>
        <BOYAmt>7499</BOYAmt>
        <EOYAmt>8192</EOYAmt>
      </OtherAssetsTotalDetail>
      <Form990TotalAssetsGrp>
        <BOYAmt>103087</BOYAmt>
        <EOYAmt>105579</EOYAmt>
      </Form990TotalAssetsGrp>
      <NetAssetsOrFundBalancesGrp>
        <BOYAmt>103087</BOYAmt>
        <EOYAmt>105579</EOYAmt>
      </NetAssetsOrFundBalancesGrp>
      <InfoInScheduleOPartIIIInd>X</InfoInScheduleOPartIIIInd>
      <PrimaryExemptPurposeTxt>TO SUPPORT AND ENCOURAGE PARTICIPATION IN SPORTS ACTIVITIES, TO EXPAND AND PERPETUATE INTEREST IN ALL SCHOOL SPONSORED SPORT ACTIVITIES, TO ENCOURAGE THE SPIRIT OF GOOD SPORTSMANSHIP AND FELLOWSHIP, AND TO CREATE A BOND BETWEEN SCHOOL PERSONNEL, PLAYERS AND PARENTS TO IMPROVE AND SUPPORT THE ATHLETIC PROGRAM.</PrimaryExemptPurposeTxt>
      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>PROVIDE MISCELLANEOUS SUPPLIES TO VARIOUS ATHELTIC TEAMS</DescriptionProgramSrvcAccomTxt>
        <ProgramServiceExpensesAmt>18721</ProgramServiceExpensesAmt>
      </ProgramSrvcAccomplishmentGrp>
      <TotalProgramServiceExpensesAmt>18721</TotalProgramServiceExpensesAmt>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>ED POWERS</PersonNm>
        <TitleTxt>PRESIDENT</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>10.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>ABBY CAMERON</PersonNm>
        <TitleTxt>VICE PRESIDE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>10.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>JACQUELINE POWERS</PersonNm>
        <TitleTxt>SECRETARY</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>10.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>HOLLY BROWN</PersonNm>
        <TitleTxt>TREASURER</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>10.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>AMY BUCCI</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>10.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>THERESA LOZDOSKI</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>10.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>CINDY ROWE</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>10.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>BROOKE DIERCKS</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>10.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>KAREN HAYES</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>10.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>JIM FRIESEMA</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>10.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>JODY FLYNN</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>10.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </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>
      <StatesWhereCopyOfReturnIsFldCd>IL</StatesWhereCopyOfReturnIsFldCd>
      <BooksInCareOfDetail>
        <PersonNm>HOLLY BROWN</PersonNm>
        <USAddress>
          <AddressLine1Txt>464 STONE HOLLOW DRIVE</AddressLine1Txt>
          <CityNm>POPLAR GROVE</CityNm>
          <StateAbbreviationCd>IL</StateAbbreviationCd>
          <ZIPCd>61065</ZIPCd>
        </USAddress>
        <PhoneNum>8152989641</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="RetDoc4">
      <PublicOrganization170Ind>X</PublicOrganization170Ind>
      <GiftsGrantsContriRcvd170Grp>
        <CurrentTaxYearMinus4YearsAmt>3653</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>2258</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>3131</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>2249</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>4578</CurrentTaxYearAmt>
        <TotalAmt>15869</TotalAmt>
      </GiftsGrantsContriRcvd170Grp>
      <TotalCalendarYear170Grp>
        <CurrentTaxYearMinus4YearsAmt>3653</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>2258</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>3131</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>2249</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>4578</CurrentTaxYearAmt>
        <TotalAmt>15869</TotalAmt>
      </TotalCalendarYear170Grp>
      <PublicSupportTotal170Amt>15869</PublicSupportTotal170Amt>
      <GrossInvestmentIncome170Grp>
        <CurrentTaxYearMinus4YearsAmt>668</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>665</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>372</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>147</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>165</CurrentTaxYearAmt>
        <TotalAmt>2017</TotalAmt>
      </GrossInvestmentIncome170Grp>
      <TotalSupportAmt>17886</TotalSupportAmt>
      <GrossReceiptsRltdActivitiesAmt>382883</GrossReceiptsRltdActivitiesAmt>
      <PublicSupportCY170Pct>0.88720</PublicSupportCY170Pct>
      <PublicSupportPY170Pct>0.89810</PublicSupportPY170Pct>
      <ThirtyThrPctSuprtTestsCY170Ind>X</ThirtyThrPctSuprtTestsCY170Ind>
    </IRS990ScheduleA>
    <IRS990ScheduleG documentId="RetDoc2">
      <FundraisingEventInformationGrp>
        <Event1Nm>CONCESSION SALE</Event1Nm>
        <GrossReceiptsEvent1Amt>57652</GrossReceiptsEvent1Amt>
        <GrossRevenueEvent1Amt>57652</GrossRevenueEvent1Amt>
        <OtherDirectExpensesEvent1Amt>40427</OtherDirectExpensesEvent1Amt>
        <Event2Nm>THUNDERFEST</Event2Nm>
        <GrossReceiptsEvent2Amt>14473</GrossReceiptsEvent2Amt>
        <GrossRevenueEvent2Amt>14473</GrossRevenueEvent2Amt>
        <OtherDirectExpensesEvent2Amt>6367</OtherDirectExpensesEvent2Amt>
        <OtherEventsTotalCnt>2</OtherEventsTotalCnt>
        <GrossReceiptsOtherEventsAmt>22283</GrossReceiptsOtherEventsAmt>
        <GrossRevenueOtherEventsAmt>22283</GrossRevenueOtherEventsAmt>
        <OthDirectExpnssOtherEventsAmt>21644</OthDirectExpnssOtherEventsAmt>
        <GrossReceiptsTotalAmt>94408</GrossReceiptsTotalAmt>
        <GrossRevenueTotalEventsAmt>94408</GrossRevenueTotalEventsAmt>
        <OthDirectExpnssTotalEventsAmt>68438</OthDirectExpnssTotalEventsAmt>
        <DirectExpenseSummaryEventsAmt>68438</DirectExpenseSummaryEventsAmt>
        <NetIncomeSummaryAmt>25970</NetIncomeSummaryAmt>
      </FundraisingEventInformationGrp>
    </IRS990ScheduleG>
    <IRS990ScheduleO documentId="RetDoc3">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART I, LINE 16</FormAndLineReferenceDesc>
        <ExplanationTxt>EXPENSES OFFICE 3,996 INSURANCE 1,511 BANK CHARGES 52 LICENSES 333 FILING FEES 3,904 MISC EXPS FOR ATHLETICS 2,814 BOYS TRACK JACKETS/PANTS 6,250 FOOTBALL SLED 2,890 1/2 COST OF SOCCER GOALS 2,276 VOLLEYBALL STAND 1,411 SCHOLARSHIPS 3,064 WEBSITE 16 TOTAL 28,517</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART II, LINE 24</FormAndLineReferenceDesc>
        <ExplanationTxt>INVENTORIES FOR SALE OR USE 7,459 8,192 PREPAID EXPENSES AND DEFERRED CHARGES 40 0 EQUIPMENT &amp; TRAILER 34,347 34,347 LESS ACCUMULATED DEPRECIATION 34,347 34,347 TOTAL 7,499 8,192</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART III</FormAndLineReferenceDesc>
        <ExplanationTxt>TO SUPPORT AND ENCOURAGE PARTICIPATION IN SPORTS ACTIVITIES, TO EXPAND AND PERPETUATE INTEREST IN ALL SCHOOL SPONSORED SPORT ACTIVITIES, TO ENCOURAGE THE SPIRIT OF GOOD SPORTSMANSHIP AND FELLOWSHIP, AND TO CREATE A BOND BETWEEN SCHOOL PERSONNEL, PLAYERS AND PARENTS TO IMPROVE AND SUPPORT THE ATHLETIC PROGRAM.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>