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| IRS990/ActivityOrMissionDesc | 0 | Berkeley Athletic Fund provides financial support to the Berkeley High athletic department, sports teams, and coaches. |
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| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 0 |
| IRS990/BackupWthldComplianceInd | 0 | false |
| IRS990/BenefitsToMembersGrp/TotalAmt | 0 | 0 |
| IRS990/BooksInCareOfDetail/PersonNm | 0 | Judy Li |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 5109281757 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | PO Box 11525 |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | Berkeley |
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| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 82167 |
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| IRS990/CollectionsOfArtInd | 0 | false |
| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 0 |
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| IRS990/CompensationFromOtherSrcsInd | 0 | false |
| IRS990/CompensationProcessCEOInd | 0 | false |
| IRS990/CompensationProcessOtherInd | 0 | false |
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| IRS990/ConferencesMeetingsGrp/TotalAmt | 0 | 801 |
| IRS990/ConflictOfInterestPolicyInd | 0 | false |
| IRS990/ConservationEasementsInd | 0 | false |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | false |
| IRS990/ContriRptFundraisingEventAmt | 0 | 65361 |
| IRS990/CreditCounselingInd | 0 | false |
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| IRS990/CYContributionsGrantsAmt | 0 | 364337 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 0 |
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| IRS990/CYOtherExpensesAmt | 0 | 500901 |
| IRS990/CYOtherRevenueAmt | 0 | 52 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 115117 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | -8115 |
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| IRS990/CYTotalExpensesAmt | 0 | 500901 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 27969 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 492786 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | false |
| IRS990/DeductibleArtContributionInd | 0 | false |
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| IRS990/DelegationOfMgmtDutiesInd | 0 | false |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 0 |
| IRS990/Desc | 0 | Berkeley Athletic Fund (BAF) accepts donations and seeks funds to support Berkeley High School student athletes, coaches and athletic directors. Funding provided by the school district for the athletic teams and programs does not always cover the total costs of the things teams need to be safe, perform at the highest level and proudly represent Berkeley High. Each year BAF contributes to the success of our student athletes by providing financial support for athletic equipment, uniforms, tournament expenses, team building activities, and continuing education and professional development for coaches. |
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| IRS990/DonorRestrictionNetAssetsGrp/EOYAmt | 0 | 58404 |
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| IRS990/ElectionOfBoardMembersInd | 0 | false |
| IRS990/EmployeeCnt | 0 | 0 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | false |
| IRS990/ExpenseAmt | 0 | 447321 |
| IRS990/FamilyOrBusinessRlnInd | 0 | false |
| IRS990/FederalGrantAuditRequiredInd | 0 | false |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 19018 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 19018 |
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| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 33650 |
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| IRS990/FeesForSrvcInvstMgmntFeesGrp/TotalAmt | 0 | 0 |
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| IRS990/ForeignFinancialAccountInd | 0 | false |
| IRS990/ForeignGrantsGrp/TotalAmt | 0 | 0 |
| IRS990/ForeignOfficeInd | 0 | false |
| IRS990/Form1098CFiledInd | 0 | false |
| IRS990/Form8282FiledCnt | 0 | 0 |
| IRS990/Form8282PropertyDisposedOfInd | 0 | false |
| IRS990/Form8899Filedind | 0 | false |
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| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 6 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 7 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 8 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 9 | 0.00 |
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| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 2.00 |
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| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 9 | 2.00 |
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| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 4 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 5 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 6 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 7 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 8 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 9 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 3 | X |
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| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 7 | 0 |
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| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | Janel Wellborn |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | Nick Walsh |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | Mike Ely |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | Minera Tirado |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | Phil Polishuk |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | Karl Torke |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | Hillary Metz |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | Joshua Schnoll |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | Theo Niemeyer |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | Gracie Koch |
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| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | Director |
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| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | Director |
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| IRS990/GrantsToOrganizationsInd | 0 | false |
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| IRS990/MinutesOfCommitteesInd | 0 | true |
| IRS990/MinutesOfGoverningBodyInd | 0 | true |
| IRS990/MissionDesc | 0 | Berkeley Athletic Fund provides financial support to the Berkeley High athletic department, sports teams, and coaches. |
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| IRS990/MoreThan5000KToOrgInd | 0 | false |
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| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 1940 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 16654 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 24978 |
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| IRS990/OperateHospitalInd | 0 | false |
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| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
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| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 0 |
| IRS990/OtherExpensesGrp/Desc | 0 | Equipment, gear, & officials |
| IRS990/OtherExpensesGrp/Desc | 1 | Team building |
| IRS990/OtherExpensesGrp/Desc | 2 | Tournament fees |
| IRS990/OtherExpensesGrp/Desc | 3 | Fundraising & other expenses |
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| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 181392 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 57736 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 2 | 48270 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 181392 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 57736 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 48270 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 17765 |
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| IRS990/PoliticalCampaignActyInd | 0 | false |
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| IRS990/PrincipalOfficerNm | 0 | Janel Wellborn |
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| IRS990/ProfessionalFundraisingInd | 0 | false |
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| IRS990/ProgramServiceRevenueGrp/BusinessCd | 1 | 900099 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 2 | 900099 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 3 | 900099 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 4 | 900099 |
| IRS990/ProgramServiceRevenueGrp/Desc | 0 | Camp fees |
| IRS990/ProgramServiceRevenueGrp/Desc | 1 | Event & merchandise sales |
| IRS990/ProgramServiceRevenueGrp/Desc | 2 | Snack shack sales |
| IRS990/ProgramServiceRevenueGrp/Desc | 3 | Tournament fees |
| IRS990/ProgramServiceRevenueGrp/Desc | 4 | Ultimate reg. fees |
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| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 1 | 58830 |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 2 | 12977 |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 3 | 2120 |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 4 | 38040 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 0 | 3150 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 1 | 58830 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 2 | 12977 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 3 | 2120 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 4 | 38040 |
| IRS990/ProgSrvcAccomActy2Grp/Desc | 0 | Berkeley Athletic Fund fundraises to augment the meager wages paid to assistant and freshman coaches by the Berkeley Unified School District. These fund increase Berkeley High School's ability to recruit and retain quality coaches which enhances the student athlete experience. BAF sponsors one special fundraising event, a golf tournament. Other donations are collected in various ways throughout the year. See PSA#1. |
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| IRS990/PYTotalExpensesAmt | 0 | 540035 |
| IRS990/PYTotalRevenueAmt | 0 | 509215 |
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| IRS990/SavingsAndTempCashInvstGrp/EOYAmt | 0 | 421879 |
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| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus1YearAmt | 0 | 365248 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 358364 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 276848 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 141388 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/TotalAmt | 0 | 1515680 |
| IRS990ScheduleA/GovtFurnSrvcFcltsVl170Grp/TotalAmt | 0 | 0 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearAmt | 0 | 13280 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus1YearAmt | 0 | 1716 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 857 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/TotalAmt | 0 | 15853 |
| IRS990ScheduleA/GrossReceiptsRltdActivitiesAmt | 0 | 391909 |
| IRS990ScheduleA/OtherIncome170Grp/CurrentTaxYearMinus1YearAmt | 0 | 1000 |
| IRS990ScheduleA/OtherIncome170Grp/TotalAmt | 0 | 1000 |
| IRS990ScheduleA/PublicOrganization170Ind | 0 | X |
| IRS990ScheduleA/PublicSupportCY170Pct | 0 | 0.98900 |
| IRS990ScheduleA/PublicSupportPY170Pct | 0 | 0.99730 |
| IRS990ScheduleA/PublicSupportTotal170Amt | 0 | 1515680 |
| IRS990ScheduleA/SubstantialContributorsTotAmt | 0 | 0 |
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| IRS990ScheduleA/ThirtyThrPctSuprtTestsCY170Ind | 0 | X |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearAmt | 0 | 373832 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus1YearAmt | 0 | 365248 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 358364 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 276848 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 141388 |
| IRS990ScheduleA/TotalCalendarYear170Grp/TotalAmt | 0 | 1515680 |
| IRS990ScheduleA/TotalSupportAmt | 0 | 1532533 |
| IRS990ScheduleA/UnrelatedBusinessNetIncm170Grp/TotalAmt | 0 | 0 |
| IRS990/ScheduleBRequiredInd | 0 | false |
| IRS990ScheduleG/AgrmtProfFundraisingActyInd | 0 | false |
| IRS990ScheduleG/FundraisingEventInformationGrp/CharitableContributionsTotAmt | 0 | 65361 |
| IRS990ScheduleG/FundraisingEventInformationGrp/CharitableContriEvent1Amt | 0 | 65361 |
| IRS990ScheduleG/FundraisingEventInformationGrp/DirectExpenseSummaryEventsAmt | 0 | 9443 |
| IRS990ScheduleG/FundraisingEventInformationGrp/Event1Nm | 0 | Golf tournament |
| IRS990ScheduleG/FundraisingEventInformationGrp/FoodAndBeverageEvent1Amt | 0 | 2708 |
| IRS990ScheduleG/FundraisingEventInformationGrp/FoodAndBeverageTotalEventsAmt | 0 | 2708 |
| IRS990ScheduleG/FundraisingEventInformationGrp/GrossReceiptsEvent1Amt | 0 | 74661 |
| IRS990ScheduleG/FundraisingEventInformationGrp/GrossReceiptsTotalAmt | 0 | 74661 |
| IRS990ScheduleG/FundraisingEventInformationGrp/GrossRevenueEvent1Amt | 0 | 9300 |
| IRS990ScheduleG/FundraisingEventInformationGrp/GrossRevenueTotalEventsAmt | 0 | 9300 |
| IRS990ScheduleG/FundraisingEventInformationGrp/NetIncomeSummaryAmt | 0 | -143 |
| IRS990ScheduleG/FundraisingEventInformationGrp/NonCashPrizesEvent1Amt | 0 | 160 |
| IRS990ScheduleG/FundraisingEventInformationGrp/NonCashPrizesTotalEventsAmt | 0 | 160 |
| IRS990ScheduleG/FundraisingEventInformationGrp/OthDirectExpnssTotalEventsAmt | 0 | 175 |
| IRS990ScheduleG/FundraisingEventInformationGrp/OtherDirectExpensesEvent1Amt | 0 | 175 |
| IRS990ScheduleG/FundraisingEventInformationGrp/RentFacilityCostsEvent1Amt | 0 | 6400 |
| IRS990ScheduleG/FundraisingEventInformationGrp/RentFcltyCostsTotalEventsAmt | 0 | 6400 |
| IRS990/ScheduleJRequiredInd | 0 | false |
| IRS990/ScheduleORequiredInd | 0 | true |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 0 | The treasurer and bookkeeper work with CK to make sure the draft is accurate, The Treasurer shares the draft with the Board via email in advance of a vote to approve the filing. The Treasurer reviews the filing and comments on any changes to prior years either by email or in person at a meeting. Board members are asked to provide comments and a vote is taken to approve, either through email or in person at a meeting, depending on timing. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 1 | We would share this information on request. |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | Form 990, Part VI, Section B, Line 11b |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | Form 990, Part VI, Section C, Line 19 |
| IRS990/SchoolOperatingInd | 0 | false |
| IRS990/SignificantChangeInd | 0 | false |
| IRS990/SignificantNewProgramSrvcInd | 0 | false |
| IRS990/StatesWhereCopyOfReturnIsFldCd | 0 | CA |
| IRS990/SubjectToExcsTaxNetInvstIncInd | 0 | false |
| IRS990/SubjectToProxyTaxInd | 0 | false |
| IRS990/SubjToTaxRmnrtnExPrchtPymtInd | 0 | false |
| IRS990/TaxablePartyNotificationInd | 0 | false |
| IRS990/TaxExemptBondsInd | 0 | false |
| IRS990/TerminateOperationsInd | 0 | false |
| IRS990/TotalAssetsBOYAmt | 0 | 506135 |
| IRS990/TotalAssetsEOYAmt | 0 | 504046 |
| IRS990/TotalAssetsGrp/BOYAmt | 0 | 506135 |
| IRS990/TotalAssetsGrp/EOYAmt | 0 | 504046 |
| IRS990/TotalCompGreaterThan150KInd | 0 | false |
| IRS990/TotalContributionsAmt | 0 | 364337 |
| IRS990/TotalEmployeeCnt | 0 | 0 |
| IRS990/TotalFunctionalExpensesGrp/FundraisingAmt | 0 | 27969 |
| IRS990/TotalFunctionalExpensesGrp/ManagementAndGeneralAmt | 0 | 25611 |
| IRS990/TotalFunctionalExpensesGrp/ProgramServicesAmt | 0 | 447321 |
| IRS990/TotalFunctionalExpensesGrp/TotalAmt | 0 | 500901 |