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| IRS990/ActivityOrMissionDesc | 0 | The mission of the Brooklyn Charter School is to engage in a process of teaching and learning that inspires excellence in academic performance, encourages lifelong learning, builds self-respect and respect for others, and develops responsible leaders and citizenry. |
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| IRS990/BooksInCareOfDetail/PersonNm | 0 | Ariel Arnold |
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| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 545 Willoughby Avenue |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | Brooklyn |
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| IRS990/Desc | 0 | The School provides a full range of educational services appropriate for grade levels K,1,2,3,4 and 5. The School completed the 2017-2018 fiscal year with an average enrollment of approximately 195 students. |
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| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 1.00 |
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| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 4 | X |
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| IRS990/Form990PartVIISectionAGrp/OfficerInd | 3 | X |
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| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | Anthony Betaudier |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | Diane Lee |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | Colathur Janardhanan |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | Joanne Hunt |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | Mary Kate Boesch |
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| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | Business Mng. |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | Head of School |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | Asst. Principal |
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| IRS990/Form990TFiledInd | 0 | false |
| IRS990/FormationYr | 0 | 2001 |
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| IRS990/MinutesOfCommitteesInd | 0 | true |
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| IRS990/MissionDesc | 0 | The Brooklyn Charter School is committed to providing a nurturing and supportive community where all students feel secure, recognize their own potential, respect others regardless of race, religion or culture, and are instilled with the desire to learn and achieve. It is our aim to provide a rigorous academic program supported by the Arts & Technology that cultivates the whole child. Through achievement and creativity, and in partnership with our families, students will develop the necessary confidence, intellectual capacity and leadership skills to prepare them for an evolving global society. |
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| IRS990/OtherExpensesGrp/Desc | 0 | Supplies and materials |
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| IRS990/OtherExpensesGrp/Desc | 2 | Professional Development |
| IRS990/OtherExpensesGrp/Desc | 3 | Student & Staff Recruitment |
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| IRS990ScheduleD/CYMinus1YrEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 366667 |
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| IRS990ScheduleD/CYMinus2YrEndwmtFundGrp/EndYearBalanceAmt | 0 | 366667 |
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| IRS990ScheduleD/CYMinus3YrEndwmtFundGrp/EndYearBalanceAmt | 0 | 379133 |
| IRS990ScheduleD/CYMinus3YrEndwmtFundGrp/InvestmentEarningsOrLossesAmt | 0 | 1790 |
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| IRS990ScheduleD/ExpensesNotReportedAmt | 0 | 876100 |
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| IRS990ScheduleD/FootnoteTextInd | 0 | X |
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| IRS990ScheduleD/OtherLandBuildingsGrp/OtherCostOrOtherBasisAmt | 0 | 176519 |
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| IRS990ScheduleD/PrmnntEndowmentBalanceEOYPct | 0 | 0.89000 |
| IRS990ScheduleD/RelatedOrgListSchRInd | 0 | false |
| IRS990ScheduleD/RevenueNotReportedAmt | 0 | 837740 |
| IRS990ScheduleD/RevenueSubtotalAmt | 0 | 3410418 |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 0 | The School does not believe its financial statements include any material, uncertain tax positions. Tax returns for periods ending June 30, 2015 and later are subject to examination by applicable taxing authorities. |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | Part X : FIN48 Footnote |
| IRS990ScheduleD/TermEndowmentBalanceEOYPct | 0 | 0.11000 |
| IRS990ScheduleD/TotalBookValueLandBuildingsAmt | 0 | 68686 |
| IRS990ScheduleD/TotalExpensesPerForm990Amt | 0 | 4169187 |
| IRS990ScheduleD/TotalRevenuePerForm990Amt | 0 | 3410418 |
| IRS990ScheduleD/TotalRevEtcAuditedFinclStmtAmt | 0 | 4248158 |
| IRS990ScheduleD/TotExpnsEtcAuditedFinclStmtAmt | 0 | 5045287 |
| IRS990ScheduleE/ComplianceWithRevProc7550Ind | 0 | true |
| IRS990ScheduleE/DiscriminateRaceAdmissPlcyInd | 0 | false |
| IRS990ScheduleE/DiscriminateRaceAthltProgInd | 0 | false |
| IRS990ScheduleE/DiscriminateRaceEducPlcyInd | 0 | false |
| IRS990ScheduleE/DiscriminateRaceEmplmFcultyInd | 0 | false |
| IRS990ScheduleE/DiscriminateRaceOtherActyInd | 0 | false |
| IRS990ScheduleE/DiscriminateRaceSchsInd | 0 | false |
| IRS990ScheduleE/DiscriminateRaceStdntsRghtsInd | 0 | false |
| IRS990ScheduleE/DiscriminateRaceUseOfFcltsInd | 0 | false |
| IRS990ScheduleE/GovernmentFinancialAidRcvdInd | 0 | true |
| IRS990ScheduleE/GovernmentFinancialAidRvkdInd | 0 | false |
| IRS990ScheduleE/MaintainCpyOfAllSolInd | 0 | true |
| IRS990ScheduleE/MaintainCpyOfBrochuresEtcInd | 0 | true |
| IRS990ScheduleE/MaintainRacialCompRecsInd | 0 | true |
| IRS990ScheduleE/MaintainScholarshipsRecsInd | 0 | true |
| IRS990ScheduleE/NondiscriminatoryPolicyStmtInd | 0 | true |
| IRS990ScheduleE/PlcyPblczdViaBroadcastMediaInd | 0 | true |
| IRS990ScheduleE/PolicyStmtInBrochuresEtcInd | 0 | true |
| IRS990ScheduleE/SupplementalInformationDetail/ExplanationTxt | 0 | The racially nondiscriminatory policy is publicized in recruitment for staff and teachers. |
| IRS990ScheduleE/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | Schedule E, Line 3 - Racially Nondiscriminatory Policy Publicized |
| IRS990ScheduleE/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | Schedule E, Line 4 - Explanation of Records and Materials Not Maintained |
| IRS990ScheduleE/SupplementalInformationDetail/FormAndLineReferenceDesc | 2 | Schedule E, Line 5 - Explanation of Organization Discrimination by Race |
| IRS990ScheduleJ/AnyNonFixedPaymentsInd | 0 | false |
| IRS990ScheduleJ/BoardOrCommitteeApprovalInd | 0 | X |
| IRS990ScheduleJ/CompBasedOnRevenueOfFlngOrgInd | 0 | false |
| IRS990ScheduleJ/CompBsdNetEarnsFlngOrgInd | 0 | false |
| IRS990ScheduleJ/CompBsdNetEarnsRltdOrgsInd | 0 | false |
| IRS990ScheduleJ/CompBsdOnRevRelatedOrgsInd | 0 | false |
| IRS990ScheduleJ/EquityBasedCompArrngmInd | 0 | false |
| IRS990ScheduleJ/InitialContractExceptionInd | 0 | false |
| IRS990ScheduleJ/RebuttablePresumptionProcInd | 0 | false |
| IRS990/ScheduleJRequiredInd | 0 | true |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BaseCompensationFilingOrgAmt | 0 | 178274 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsFilingOrgAmt | 0 | 16175 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/PersonNm | 0 | Joanne Hunt |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TitleTxt | 0 | Head of School |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TotalCompensationFilingOrgAmt | 0 | 194449 |
| IRS990ScheduleJ/SeverancePaymentInd | 0 | false |
| IRS990ScheduleJ/SupplementalNonqualRtrPlanInd | 0 | false |