﻿<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" returnVersion="2025v4.0">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2026-06-03T15:36:32-04:00</ReturnTs>
    <TaxPeriodEndDt>2025-12-31</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmEIN>311401523</PreparerFirmEIN>
      <PreparerFirmName>
        <BusinessNameLine1Txt>ARVO ADVISORS INC</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>1550 OLD HENDERSON ROAD STE 100</AddressLine1Txt>
        <CityNm>COLUMBUS</CityNm>
        <StateAbbreviationCd>OH</StateAbbreviationCd>
        <ZIPCd>43220</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990EZ</ReturnTypeCd>
    <TaxPeriodBeginDt>2025-01-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>341179681</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>OHIO COUNCIL FOR THE SOCIAL STUDIES</BusinessNameLine1Txt>
        <BusinessNameLine2Txt>C/O ADAM MOTTER</BusinessNameLine2Txt>
      </BusinessName>
      <BusinessNameControlTxt>OHIO</BusinessNameControlTxt>
      <PhoneNum>6144593182</PhoneNum>
      <USAddress>
        <AddressLine1Txt>550 OAKCREST DR</AddressLine1Txt>
        <CityNm>WADSWORTH</CityNm>
        <StateAbbreviationCd>OH</StateAbbreviationCd>
        <ZIPCd>44281</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>ADAM MOTTER</PersonNm>
      <PersonTitleTxt>EXEC DIRECTOR</PersonTitleTxt>
      <PhoneNum>6144593182</PhoneNum>
      <SignatureDt>2026-06-03</SignatureDt>
      <DiscussWithPaidPreparerInd>true</DiscussWithPaidPreparerInd>
    </BusinessOfficerGrp>
    <PreparerPersonGrp>
      <PreparerPersonNm>MARK P MURPHY</PreparerPersonNm>
      <PTIN>P00746633</PTIN>
      <PhoneNum>6144593182</PhoneNum>
      <PreparationDt>2026-06-03</PreparationDt>
    </PreparerPersonGrp>
    <TaxYr>2025</TaxYr>
    <BuildTS>2025-03-06 01:10:19Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="3">
    <IRS990EZ documentId="RetDoc1" referenceDocumentId="RetDoc2">
      <MethodOfAccountingCashInd>X</MethodOfAccountingCashInd>
      <ScheduleBNotRequiredInd>X</ScheduleBNotRequiredInd>
      <WebsiteAddressTxt>WWW.OCSS.ORG</WebsiteAddressTxt>
      <Organization501c3Ind referenceDocumentId="RetDoc3">X</Organization501c3Ind>
      <TypeOfOrganizationCorpInd>X</TypeOfOrganizationCorpInd>
      <GrossReceiptsAmt>70461</GrossReceiptsAmt>
      <InfoInScheduleOPartIInd>X</InfoInScheduleOPartIInd>
      <ContributionsGiftsGrantsEtcAmt>14696</ContributionsGiftsGrantsEtcAmt>
      <ProgramServiceRevenueAmt>55765</ProgramServiceRevenueAmt>
      <TotalRevenueAmt>70461</TotalRevenueAmt>
      <GrantsAndSimilarAmountsPaidAmt>443</GrantsAndSimilarAmountsPaidAmt>
      <SalariesOtherCompEmplBnftAmt>4000</SalariesOtherCompEmplBnftAmt>
      <FeesAndOtherPymtToIndCntrctAmt>5790</FeesAndOtherPymtToIndCntrctAmt>
      <PrintingPublicationsPostageAmt>1447</PrintingPublicationsPostageAmt>
      <OtherExpensesTotalAmt>64550</OtherExpensesTotalAmt>
      <TotalExpensesAmt>76230</TotalExpensesAmt>
      <ExcessOrDeficitForYearAmt>-5769</ExcessOrDeficitForYearAmt>
      <NetAssetsOrFundBalancesBOYAmt>93853</NetAssetsOrFundBalancesBOYAmt>
      <NetAssetsOrFundBalancesEOYAmt>88084</NetAssetsOrFundBalancesEOYAmt>
      <CashSavingsAndInvestmentsGrp>
        <BOYAmt>93853</BOYAmt>
        <EOYAmt>88084</EOYAmt>
      </CashSavingsAndInvestmentsGrp>
      <Form990TotalAssetsGrp>
        <BOYAmt>93853</BOYAmt>
        <EOYAmt>88084</EOYAmt>
      </Form990TotalAssetsGrp>
      <NetAssetsOrFundBalancesGrp>
        <BOYAmt>93853</BOYAmt>
        <EOYAmt>88084</EOYAmt>
      </NetAssetsOrFundBalancesGrp>
      <PrimaryExemptPurposeTxt>TO PROMOTE SOCIAL STUDIES</PrimaryExemptPurposeTxt>
      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>SERVED 1500+ MEMBERS BY PUBLISHING THE QUARTERLY O.C.S.S. NEWSLETTER - INFORMING MEMBERS OF ACTIVITIES, NEW SOCIAL STUDIES MATERIALS, AND DEVELOPMENT PROGRAMS.</DescriptionProgramSrvcAccomTxt>
        <ProgramServiceExpensesAmt>21379</ProgramServiceExpensesAmt>
      </ProgramSrvcAccomplishmentGrp>
      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>HELD ANNUAL STATE CONVENTION - WHERE MEMBERS LEARNED INSTRUCTIONAL IDEAS, TECHNIQUES, AND STRATEGIES - AND PROVIDED A FORUM FOR MEMBERS' EXCHANGE.</DescriptionProgramSrvcAccomTxt>
        <ProgramServiceExpensesAmt>53178</ProgramServiceExpensesAmt>
      </ProgramSrvcAccomplishmentGrp>
      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>GAVE AWARDS TO ENCOURAGE DEDICATION AND INTEREST IN SOCIAL STUDIES AMONG TEACHERS.</DescriptionProgramSrvcAccomTxt>
        <GrantsAndAllocationsAmt>443</GrantsAndAllocationsAmt>
        <ProgramServiceExpensesAmt>843</ProgramServiceExpensesAmt>
      </ProgramSrvcAccomplishmentGrp>
      <TotalProgramServiceExpensesAmt>75400</TotalProgramServiceExpensesAmt>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>SARAH KAKA</PersonNm>
        <TitleTxt>PRESIDENT</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>BILL HILT</PersonNm>
        <TitleTxt>IMMED PAST P</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>MATT HOLLSTEIN</PersonNm>
        <TitleTxt>VICE PRESIDE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>CHEYENNE OECHSLE</PersonNm>
        <TitleTxt>SECRETARY</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>DALLAS TUCHOLSKI</PersonNm>
        <TitleTxt>TREASURER</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>ADAM MOTTER</PersonNm>
        <TitleTxt>EXEC DIRECTO</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>10.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>4000</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>OH</StatesWhereCopyOfReturnIsFldCd>
      <BooksInCareOfDetail>
        <PersonNm>ADAM MOTTER</PersonNm>
        <USAddress>
          <AddressLine1Txt>550 OAKCREST DRIVE</AddressLine1Txt>
          <CityNm>WADSWORTH</CityNm>
          <StateAbbreviationCd>OH</StateAbbreviationCd>
          <ZIPCd>44281</ZIPCd>
        </USAddress>
        <PhoneNum>6144593182</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="RetDoc3">
      <PublicOrganization170Ind>X</PublicOrganization170Ind>
      <GiftsGrantsContriRcvd170Grp>
        <CurrentTaxYearMinus4YearsAmt>18844</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>17857</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>17265</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>15356</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>14696</CurrentTaxYearAmt>
        <TotalAmt>84018</TotalAmt>
      </GiftsGrantsContriRcvd170Grp>
      <TotalCalendarYear170Grp>
        <CurrentTaxYearMinus4YearsAmt>18844</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>17857</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>17265</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>15356</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>14696</CurrentTaxYearAmt>
        <TotalAmt>84018</TotalAmt>
      </TotalCalendarYear170Grp>
      <PublicSupportTotal170Amt>84018</PublicSupportTotal170Amt>
      <TotalSupportAmt>84018</TotalSupportAmt>
      <GrossReceiptsRltdActivitiesAmt>183483</GrossReceiptsRltdActivitiesAmt>
      <PublicSupportCY170Pct>1.00000</PublicSupportCY170Pct>
      <PublicSupportPY170Pct>1.00000</PublicSupportPY170Pct>
      <ThirtyThrPctSuprtTestsCY170Ind>X</ThirtyThrPctSuprtTestsCY170Ind>
      <Form990SchAType1SuprtOrgGrp>
        <PowerAppointMajorityDirTrstInd>true</PowerAppointMajorityDirTrstInd>
        <OperateBenefitNonSuprtOrgInd>false</OperateBenefitNonSuprtOrgInd>
      </Form990SchAType1SuprtOrgGrp>
    </IRS990ScheduleA>
    <IRS990ScheduleO documentId="RetDoc2">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART I</FormAndLineReferenceDesc>
        <ExplanationTxt>LINE 10 - GRANTS TO INDIVIDUALS FOR PROFESSIONAL DEVELOPMENT COURSES 443</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART I, LINE 16</FormAndLineReferenceDesc>
        <ExplanationTxt>EXPENSES PROMOTION 599 TECHNOLOGY 2,722 TRAVEL 2,410 NATIONAL CONFERENCE 5,241 ANNUAL CONFERENCE 53,178 AWARDS 400 TOTAL 64,550</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>