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        <FundraisingAmt>234</FundraisingAmt>
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        <ProgramServicesAmt>9322</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1748</ManagementAndGeneralAmt>
        <FundraisingAmt>582</FundraisingAmt>
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      <OtherExpensesGrp>
        <Desc>Other operating expenses</Desc>
        <TotalAmt>12764</TotalAmt>
        <ProgramServicesAmt>10211</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1915</ManagementAndGeneralAmt>
        <FundraisingAmt>638</FundraisingAmt>
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        <TotalAmt>12238</TotalAmt>
        <ProgramServicesAmt>9790</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1836</ManagementAndGeneralAmt>
        <FundraisingAmt>612</FundraisingAmt>
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        <Desc>UTILITIES</Desc>
        <TotalAmt>8037</TotalAmt>
        <ProgramServicesAmt>6429</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1206</ManagementAndGeneralAmt>
        <FundraisingAmt>402</FundraisingAmt>
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        <Desc>Communication</Desc>
        <TotalAmt>6149</TotalAmt>
        <ProgramServicesAmt>4920</ProgramServicesAmt>
        <ManagementAndGeneralAmt>922</ManagementAndGeneralAmt>
        <FundraisingAmt>307</FundraisingAmt>
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        <ProgramServicesAmt>428986</ProgramServicesAmt>
        <ManagementAndGeneralAmt>104403</ManagementAndGeneralAmt>
        <FundraisingAmt>26646</FundraisingAmt>
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        <EOYAmt>257961</EOYAmt>
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        <EOYAmt>432960</EOYAmt>
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      <LandBldgEquipCostOrOtherBssAmt>48762</LandBldgEquipCostOrOtherBssAmt>
      <LandBldgEquipAccumDeprecAmt>39794</LandBldgEquipAccumDeprecAmt>
      <LandBldgEquipBasisNetGrp>
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        <EOYAmt>8968</EOYAmt>
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      <InvestmentsPubTradedSecGrp>
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      <InvestmentsOtherSecuritiesGrp>
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      <InvestmentsProgramRelatedGrp>
        <EOYAmt>0</EOYAmt>
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      <IntangibleAssetsGrp>
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        <EOYAmt>201779</EOYAmt>
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      <TotalAssetsGrp>
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        <EOYAmt>901668</EOYAmt>
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      <OtherLiabilitiesGrp>
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        <EOYAmt>244008</EOYAmt>
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        <BOYAmt>253783</BOYAmt>
        <EOYAmt>244008</EOYAmt>
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      <OrganizationFollowsFASB117Ind>X</OrganizationFollowsFASB117Ind>
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        <EOYAmt>901668</EOYAmt>
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      <ReconcilationRevenueExpnssAmt>-24303</ReconcilationRevenueExpnssAmt>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>true</AccountantCompileOrReviewInd>
      <AcctCompileOrReviewBasisGrp>
        <SeparateBasisFinclStmtInd>X</SeparateBasisFinclStmtInd>
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      <FSAuditedInd>false</FSAuditedInd>
      <AuditCommitteeInd>true</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>false</FederalGrantAuditRequiredInd>
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      <PublicOrganization170Ind>X</PublicOrganization170Ind>
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        <CurrentTaxYearMinus4YearsAmt>22349</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>39026</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>73727</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>19804</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>7526</CurrentTaxYearAmt>
        <TotalAmt>162432</TotalAmt>
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      <TaxRevLeviedOrgnztnlBnft170Grp>
        <TotalAmt>0</TotalAmt>
      </TaxRevLeviedOrgnztnlBnft170Grp>
      <GovtFurnSrvcFcltsVl170Grp>
        <TotalAmt>0</TotalAmt>
      </GovtFurnSrvcFcltsVl170Grp>
      <TotalCalendarYear170Grp>
        <CurrentTaxYearMinus4YearsAmt>22349</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>39026</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>73727</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>19804</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>7526</CurrentTaxYearAmt>
        <TotalAmt>162432</TotalAmt>
      </TotalCalendarYear170Grp>
      <SubstantialContributorsTotAmt>0</SubstantialContributorsTotAmt>
      <PublicSupportTotal170Amt>162432</PublicSupportTotal170Amt>
      <GrossInvestmentIncome170Grp>
        <CurrentTaxYearMinus4YearsAmt>1664</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>578</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>160</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>191</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>7632</CurrentTaxYearAmt>
        <TotalAmt>10225</TotalAmt>
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      <UnrelatedBusinessNetIncm170Grp>
        <TotalAmt>0</TotalAmt>
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      <OtherIncome170Grp>
        <CurrentTaxYearMinus3YearsAmt>3245</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>1768</CurrentTaxYearMinus2YearsAmt>
        <TotalAmt>5013</TotalAmt>
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      <TotalSupportAmt>177670</TotalSupportAmt>
      <GrossReceiptsRltdActivitiesAmt>2311359</GrossReceiptsRltdActivitiesAmt>
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      <PublicSupportPY170Pct>0.95180</PublicSupportPY170Pct>
      <ThirtyThrPctSuprtTestsCY170Ind>X</ThirtyThrPctSuprtTestsCY170Ind>
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      <LeaseholdImprovementsGrp>
        <OtherCostOrOtherBasisAmt>46798</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>37830</DepreciationAmt>
        <BookValueAmt>8968</BookValueAmt>
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      <EquipmentGrp>
        <OtherCostOrOtherBasisAmt>1964</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>1964</DepreciationAmt>
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      <TotalBookValueLandBuildingsAmt>8968</TotalBookValueLandBuildingsAmt>
      <OtherAssetsOrgGrp>
        <Desc>Right of use Asset</Desc>
        <BookValueAmt>196779</BookValueAmt>
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      <OtherAssetsOrgGrp>
        <Desc>Security deposit</Desc>
        <BookValueAmt>5000</BookValueAmt>
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      <TotalBookValueOtherAssetsAmt>201779</TotalBookValueOtherAssetsAmt>
      <OtherLiabilitiesOrgGrp>
        <Desc>accrued payroll liabilities</Desc>
        <Amt>39478</Amt>
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      <OtherLiabilitiesOrgGrp>
        <Desc>Right of use - lease</Desc>
        <Amt>204530</Amt>
      </OtherLiabilitiesOrgGrp>
      <TotalLiabilityAmt>244008</TotalLiabilityAmt>
      <FootnoteTextInd>X</FootnoteTextInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part X : FIN48 Footnote</FormAndLineReferenceDesc>
        <ExplanationTxt>Income TaxesFinancial statement presentation follows the recommendations of ASC 740, Income Taxes. Under ASC 740, Keystone is required to report information regarding its exposure to various tax positions taken by the organization and requires a two-step process that separates recognition from measurement. The first step is determining whether a tax position has met the recognition threshold; the second step is measuring a tax position that meets the recognition threshold. Management believes that Keystone has adequately evaluated its current tax positions and has concluded that as of December 31, 2023, Keystone does not have any uncertain tax positions for which a reserve or an accrual for a tax liability would be necessary.Keystone has received notification from the Internal Revenue Service and the State of California that it qualifies for tax-exempt status under Section 501(c)(3) of the Internal Revenue Code and Section 23701d of the California Revenue and Taxation Code. This exemption is subject to periodic review by the federal and state taxing authorities and management is confident that the organization continues to satisfy all federal and state statutes in order to qualify for continued tax exemption status. Keystone may periodically receive unrelated business income requiring the organization to file separate tax returns under federal and state statutes. Under such conditions, Keystone calculates and accrues the applicable taxes payable.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleO documentId="IRS990ScheduleO" softwareId="23017517" softwareVersionNum="2023v5.1">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, Line 11b</FormAndLineReferenceDesc>
        <ExplanationTxt>Form 990 is prepared by an outside tax professional. The form is then reviewed by the organization's management. After a full review, the final version of the tax return is provided to all members of the organization's voting body. A representative of management authorizes the final form 990 which is then e-filed with the internal revenue service.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, Line 12c</FormAndLineReferenceDesc>
        <ExplanationTxt>Members of the Board of Directors review all potential conflicts of interest periodically. Top management and all Board members are required to disclose potential conflicts and any related party affiliations. The organization seeks full transparency on all relationships. Any potential conflicts (in fact or appearance) are discussed openly and resolved in accordance with the organization's policies and procedures.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, Line 15a</FormAndLineReferenceDesc>
        <ExplanationTxt>Members of the board of directors review the compensation of all high-level personnel periodically in accordance with IRS rules and regulations. Efforts are made to secure compensation data from industry sources in order to determine competitiveness and appropriateness of salaries. Every effort is made to ensure that the process is thorough and transparent in accordance with IRS guidelines and the organization's policies and procedures.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, Line 15b</FormAndLineReferenceDesc>
        <ExplanationTxt>Compensation of other personnel and highly compensated employees is reviewed periodically by members of management. Efforts are made to secure compensation data from industry sources in order to determine competitiveness and appropriateness of salaries and all related benefits. All decisions are then documented in personnel files.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section C, Line 18</FormAndLineReferenceDesc>
        <ExplanationTxt>Tax returns are available from the organization's office in Pleasanton, California.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section C, Line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>All of the organization's governing documents, financial statements, and other legal filings are maintained in a secure environment and held available for inspection by tax authorities and the general public. Tax returns are posted annually to our website and to www.guidestar.org (where they are available for viewing as electronic copies) and are also available by request from the organization's office.</ExplanationTxt>
      </SupplementalInformationDetail>
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</Return>