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| IRS990/ActivityOrMissionDesc | 0 | Strong communities build stronger schools. We believe every child deserves a high-quality education. The Potrero Residents Education Fund (PREFund) is an all-volunteer 501(c)(3) that supports public schools and helps build community in Potrero Hill. |
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| IRS990/AdvertisingGrp/ProgramServicesAmt | 0 | 239 |
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| IRS990/CYOtherRevenueAmt | 0 | 13911 |
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| IRS990/Desc | 0 | PREFund operates Potrero Kids Preschool, a year round, full-time, dual-campus Spanish bilingual preschool. Serving 98 children, approximately 25% of whom are subsidized, Potrero Kids provides high quality preschool services while encouraging support for our neighborhood public schools.Our funding comes from individual community members and families as well as local merchants, corporations and foundations who recognize that state money is not enough to provide the educational excellence we want for the children in our community. All the funds we raise go back into our community to underwrite enrichment and academic programs. |
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| IRS990/FamilyOrBusinessRlnInd | 0 | false |
| IRS990/FederalGrantAuditRequiredInd | 0 | false |
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| IRS990/FeesForServicesLegalGrp/ManagementAndGeneralAmt | 0 | 600 |
| IRS990/FeesForServicesLegalGrp/ProgramServicesAmt | 0 | 791 |
| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 1397 |
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| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 6 | 0.00 |
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| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 10 | 0.00 |
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| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 10.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 10.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 10.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 10.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 10.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 10.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 40.00 |
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| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 11 | 10.00 |
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| 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/IndividualTrusteeOrDirectorInd | 10 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 11 | X |
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| IRS990/Form990PartVIISectionAGrp/OfficerInd | 2 | X |
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| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | Jason Barton |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | Jennifer Betti |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | Stacey Delo |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | Debra Grassgreen |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | Galateia Kazakia |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | Sarah King |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | Mimi Kawakami Kloster |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | Erin Loback |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | Carla McDermott |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | Nik Tan |
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| IRS990/InsuranceGrp/ProgramServicesAmt | 0 | 8127 |
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| IRS990/MinutesOfCommitteesInd | 0 | true |
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| IRS990/MissionDesc | 0 | By underwriting local education initiatives and operating a community-focused preschool, we keep families in Potrero Hill, strengthening our community and improving our schools. |
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| IRS990/OtherExpensesGrp/Desc | 0 | In-Kind Rent Expense |
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| IRS990/OtherExpensesGrp/Desc | 2 | Substitute Teachers |
| IRS990/OtherExpensesGrp/Desc | 3 | Training & Professional Dvlpmt |
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| IRS990/OtherExpensesGrp/FundraisingAmt | 1 | 7 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 414 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 1 | 712 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 267600 |
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| IRS990/OtherExpensesGrp/ProgramServicesAmt | 2 | 33940 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 3 | 17599 |
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| IRS990/OtherExpensesGrp/TotalAmt | 2 | 34359 |
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| IRS990/PrincipalOfficerNm | 0 | Sarah King |
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| IRS990/RelatedEntityInd | 0 | false |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | false |
| IRS990/ReportInvestmentsOtherSecInd | 0 | false |
| IRS990/ReportLandBuildingEquipmentInd | 0 | false |
| IRS990/ReportOtherAssetsInd | 0 | false |
| IRS990/ReportOtherLiabilitiesInd | 0 | true |
| IRS990/ReportProgramRelatedInvstInd | 0 | false |
| IRS990/RevenueAmt | 0 | 1872436 |
| IRS990/RoyaltiesGrp/TotalAmt | 0 | 0 |
| IRS990/RoyaltiesRevenueGrp/TotalRevenueColumnAmt | 0 | 0 |
| IRS990/SavingsAndTempCashInvstGrp/EOYAmt | 0 | 0 |
| IRS990ScheduleA/AmountsRcvdDsqlfyPersonGrp/TotalAmt | 0 | 0 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearAmt | 0 | 134243 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus1YearAmt | 0 | 132038 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus2YearsAmt | 0 | 109951 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus3YearsAmt | 0 | 197713 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus4YearsAmt | 0 | 67274 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/TotalAmt | 0 | 641219 |
| IRS990ScheduleA/GovtFurnSrvcFcltsVl509Grp/TotalAmt | 0 | 0 |
| IRS990ScheduleA/GrossInvestmentIncome509Grp/TotalAmt | 0 | 0 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearAmt | 0 | 1859977 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearMinus1YearAmt | 0 | 1771821 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearMinus2YearsAmt | 0 | 1581647 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearMinus3YearsAmt | 0 | 668037 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearMinus4YearsAmt | 0 | 416814 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/TotalAmt | 0 | 6298296 |
| IRS990ScheduleA/GrossReceiptsNonUnrltBusGrp/TotalAmt | 0 | 0 |
| IRS990ScheduleA/InvestmentIncomeCYPct | 0 | 0.00000 |
| IRS990ScheduleA/NetIncomeFromOtherUBIGrp/TotalAmt | 0 | 0 |
| IRS990ScheduleA/OtherIncome509Grp/CurrentTaxYearAmt | 0 | 13911 |
| IRS990ScheduleA/OtherIncome509Grp/CurrentTaxYearMinus1YearAmt | 0 | 2385 |
| IRS990ScheduleA/OtherIncome509Grp/TotalAmt | 0 | 16296 |
| IRS990ScheduleA/Post1975UBTIGrp/TotalAmt | 0 | 0 |
| IRS990ScheduleA/PubliclySupportedOrg509a2Ind | 0 | X |
| IRS990ScheduleA/PublicSupportCY509Pct | 0 | 0.99770 |
| IRS990ScheduleA/PublicSupportPY509Pct | 0 | 0.98130 |
| IRS990ScheduleA/PublicSupportTotal509Amt | 0 | 6939515 |
| IRS990ScheduleA/SubstantialContributorsAmtGrp/TotalAmt | 0 | 0 |
| IRS990ScheduleA/TaxRevLeviedOrgnztnlBnft509Grp/TotalAmt | 0 | 0 |
| IRS990ScheduleA/ThirtyThrPctSuprtTestsCY509Ind | 0 | X |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearAmt | 0 | 1994220 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus1YearAmt | 0 | 1903859 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus2YearsAmt | 0 | 1691598 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus3YearsAmt | 0 | 865750 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus4YearsAmt | 0 | 484088 |
| IRS990ScheduleA/Total509Grp/TotalAmt | 0 | 6939515 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearAmt | 0 | 2008131 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus1YearAmt | 0 | 1906244 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus2YearsAmt | 0 | 1691598 |