| IRS990/AccountantCompileOrReviewInd | 0 | 0 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 544162 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | 0 |
| IRS990/ActivityOrMissionDesc | 0 | STUDENTS LEARN THE SKILLS NEEDED FOR POST-SECONDARY SUCCESS AND ARE ABLE TO PURSUE THEIR DREAMS. |
| IRS990/AdvertisingGrp/ManagementAndGeneralAmt | 0 | 17442 |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 17442 |
| IRS990/AllOtherContributionsAmt | 0 | 1123934 |
| IRS990/AllOtherExpensesGrp/ManagementAndGeneralAmt | 0 | 729 |
| IRS990/AllOtherExpensesGrp/ProgramServicesAmt | 0 | 25363 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 26092 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | 1 |
| IRS990/AuditCommitteeInd | 0 | 1 |
| IRS990/BooksInCareOfDetail/BusinessName/BusinessNameLine1Txt | 0 | THE ORGANIZATION |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 2158669000 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 5700 WAYNE AVENUE |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | PHILADELPHIA |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | PA |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 19144 |
| IRS990/BusinessRlnWithFamMemInd | 0 | 0 |
| IRS990/BusinessRlnWithOfficerEntInd | 0 | 0 |
| IRS990/BusinessRlnWithOrgMemInd | 0 | 0 |
| IRS990/ChangeToOrgDocumentsInd | 0 | 1 |
| IRS990/CntrctRcvdGreaterThan100KCnt | 0 | 2 |
| IRS990/CollectionsOfArtInd | 0 | 0 |
| IRS990/CompCurrentOfcrDirectorsGrp/ManagementAndGeneralAmt | 0 | 55769 |
| IRS990/CompCurrentOfcrDirectorsGrp/ProgramServicesAmt | 0 | 111552 |
| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 167321 |
| IRS990/CompensationFromOtherSrcsInd | 0 | 0 |
| IRS990/CompensationProcessCEOInd | 0 | 1 |
| IRS990/CompensationProcessOtherInd | 0 | 0 |
| IRS990/ConflictOfInterestPolicyInd | 0 | 1 |
| IRS990/ConservationEasementsInd | 0 | 0 |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | 0 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 0 | 150000 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 1 | 103948 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 0 | 5700 WAYNE AVENUE |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 1 | 5700 WAYNE AVENUE |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 0 | PHILADELPHIA |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 1 | PHILADELPHIA |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 0 | PA |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 1 | PA |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 0 | 19144 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 1 | 19144 |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 0 | MASTERY CHARTER SCHOOLS FOUNDATION |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 1 | MASTERY CHARTER HIGH SCHOOL |
| IRS990/ContractorCompensationGrp/ServicesDesc | 0 | RENT |
| IRS990/ContractorCompensationGrp/ServicesDesc | 1 | MANAGEMENT AND TECHNOLOGY SERVICES |
| IRS990/CreditCounselingInd | 0 | 0 |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 1380318 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/CYInvestmentIncomeAmt | 0 | 972 |
| IRS990/CYOtherExpensesAmt | 0 | 2204182 |
| IRS990/CYOtherRevenueAmt | 0 | 4695 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 2361959 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | -449003 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 1992765 |
| IRS990/CYTotalExpensesAmt | 0 | 4196947 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 0 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 3747944 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | 0 |
| IRS990/DeductibleArtContributionInd | 0 | 0 |
| IRS990/DeductibleNonCashContriInd | 0 | 0 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | 0 |
| IRS990/DepreciationDepletionGrp/ProgramServicesAmt | 0 | 54992 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 54992 |
| IRS990/Desc | 0 | MASTERY SCHOOLS INTEGRATES EDUCATIONAL BEST PRACTICES AND EFFECTIVE MANAGEMENT TO DRIVE STUDENT ACHIEVEMENT. OUR ACADEMIC STAFF IS OUTSTANDING AND RELENTLESSLY COMMITTED TO STUDENT ACHIEVEMENT AND CONTINUALLY IMPROVE THEIR CRAFT THROUGH HIGHLY-EFFECTIVE PROFESSIONAL DEVELOPMENT, COACHING, AND COLLABORATIVE SUPPORT. INSTRUCTION IS GROUNDED BY A COMMON PEDAGOGICAL VISION AND GUIDED BY RIGOROUS STANDARDS-BASED CURRICULA. WE ALIGN ASSESSMENTS TO CLEAR AND MEANINGFUL OBJECTIVES AND USE ASSESSMENT DATA TO TARGET AREAS OF NEED.MASTERY PREP ELEMENTARY CHARTER SCHOOL SERVES STUDENTS IN GRADES K-5. |
| IRS990/DescribedInSection501c3Ind | 0 | 1 |
| IRS990/DisregardedEntityInd | 0 | 0 |
| IRS990/DocumentRetentionPolicyInd | 0 | 1 |
| IRS990/DonorAdvisedFundInd | 0 | 0 |
| IRS990/ElectionOfBoardMembersInd | 0 | 0 |
| IRS990/EmployeeCnt | 0 | 35 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | 1 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | 0 |
| IRS990/ExpenseAmt | 0 | 3603598 |
| IRS990/FamilyOrBusinessRlnInd | 0 | 0 |
| IRS990/FederalGrantAuditRequiredInd | 0 | 0 |
| IRS990/FeesForServicesLegalGrp/ManagementAndGeneralAmt | 0 | 6678 |
| IRS990/FeesForServicesLegalGrp/ProgramServicesAmt | 0 | 8500 |
| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 15178 |
| IRS990/FeesForServicesManagementGrp/ManagementAndGeneralAmt | 0 | 232183 |
| IRS990/FeesForServicesManagementGrp/TotalAmt | 0 | 232183 |
| IRS990/FeesForServicesOtherGrp/ManagementAndGeneralAmt | 0 | 1455 |
| IRS990/FeesForServicesOtherGrp/ProgramServicesAmt | 0 | 436944 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 438399 |
| IRS990/ForeignActivitiesInd | 0 | 0 |
| IRS990/ForeignFinancialAccountInd | 0 | 0 |
| IRS990/ForeignOfficeInd | 0 | 0 |
| IRS990/Form8282PropertyDisposedOfInd | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 0 | 4.90 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 1 | 4.90 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 2 | 4.90 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 3 | 4.90 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 4 | 4.90 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 5 | 4.90 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 6 | 4.90 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 7 | 4.90 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 8 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 0.35 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 0.35 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 0.35 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 0.35 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 0.35 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 0.35 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 0.35 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 0.35 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 0 | X |
| 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/OfficerInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 0 | 0 |
| 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 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 8 | 6520 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | HOSEA HARVEY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | STACEY SELLERS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | JUDITH TSCHIRGI |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | SULAIMAN RAHMAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | SUZANNE BIEMILLER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | GRAHAM FINNEY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | DONALD KIMELMAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | ROBERT VICTOR |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | RAYMOND FIELDS |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 8 | 76725 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 8 | 69527 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | BOARD MEMBER-AS OF OCTOBER 2018 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | SECRETARY |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | TREASURER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | EX-OFFICIO CHAIR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | PRINCIPAL-TRANSFERRED IN JUNE 2018 |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | 1 |
| IRS990/FormationYr | 0 | 2015 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | 0 |
| IRS990/FSAuditedBasisGrp/SeparateBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | 1 |
| IRS990/FundraisingActivitiesInd | 0 | 0 |
| IRS990/GamingActivitiesInd | 0 | 0 |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 7 |
| IRS990/GovernmentGrantsAmt | 0 | 256384 |
| IRS990/GrantAmt | 0 | 0 |
| IRS990/GrantsToIndividualsInd | 0 | 0 |
| IRS990/GrantsToOrganizationsInd | 0 | 0 |
| IRS990/GrantToRelatedPersonInd | 0 | 0 |
| IRS990/GrossReceiptsAmt | 0 | 3747944 |
| IRS990/GroupReturnForAffiliatesInd | 0 | 0 |
| IRS990/IncludeFIN48FootnoteInd | 0 | 0 |
| IRS990/IndependentAuditFinclStmtInd | 0 | 1 |
| IRS990/IndependentVotingMemberCnt | 0 | 7 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/IndoorTanningServicesInd | 0 | 0 |
| IRS990/InfoInScheduleOPartIXInd | 0 | X |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InformationTechnologyGrp/ManagementAndGeneralAmt | 0 | 1070 |
| IRS990/InformationTechnologyGrp/ProgramServicesAmt | 0 | 76042 |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 77112 |
| IRS990/InitialReturnInd | 0 | X |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 37025 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 37025 |
| IRS990/InterestGrp/ManagementAndGeneralAmt | 0 | 4400 |
| IRS990/InterestGrp/TotalAmt | 0 | 4400 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 972 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 972 |
| IRS990/InvestmentInJointVentureInd | 0 | 0 |
| IRS990/IRPDocumentCnt | 0 | 15 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 54992 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 0 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 409889 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 464881 |
| IRS990/LegalDomicileStateCd | 0 | PA |
| IRS990/LoanOutstandingInd | 0 | 0 |
| IRS990/LobbyingActivitiesInd | 0 | 0 |
| IRS990/LocalChaptersInd | 0 | 0 |
| IRS990/MaterialDiversionOrMisuseInd | 0 | 0 |
| IRS990/MembersOrStockholdersInd | 0 | 0 |
| IRS990/MethodOfAccountingAccrualInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | 1 |
| IRS990/MinutesOfGoverningBodyInd | 0 | 1 |
| IRS990/MissionDesc | 0 | ALL STUDENTS LEARN THE ACADEMIC AND PERSONAL SKILLS THEY NEED TO BE TRULY PREPARED FOR POSTSECONDARY SUCCESS AND ABLE TO PURSUE THEIR DREAMS. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | 0 |
| IRS990/MoreThan5000KToOrgInd | 0 | 0 |
| IRS990/MortgNotesPyblScrdInvstPropGrp/EOYAmt | 0 | 64506 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | -449003 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
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| IRS990/OccupancyGrp/ProgramServicesAmt | 0 | 747737 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 747737 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 15829 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 126706 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 142535 |
| IRS990/OfficerMailingAddressInd | 0 | 0 |
| IRS990/OperateHospitalInd | 0 | 0 |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsSFAS117Ind | 0 | X |
| IRS990/OtherAssetsTotalGrp/BOYAmt | 0 | 0 |
| IRS990/OtherAssetsTotalGrp/EOYAmt | 0 | 128000 |
| IRS990/OtherChangesInNetAssetsAmt | 0 | 0 |
| IRS990/OtherEmployeeBenefitsGrp/ManagementAndGeneralAmt | 0 | 39868 |
| IRS990/OtherEmployeeBenefitsGrp/ProgramServicesAmt | 0 | 163457 |
| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 203325 |
| IRS990/OtherExpensesGrp/Desc | 0 | SPECIAL EDUCATION |
| IRS990/OtherExpensesGrp/Desc | 1 | BOOKS |
| IRS990/OtherExpensesGrp/Desc | 2 | MEALS AND REFRESHMENTS |
| IRS990/OtherExpensesGrp/Desc | 3 | PRINCIPAL DISCRETIONARY |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 1817 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 159001 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 106140 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 2 | 26414 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 3 | 14482 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 159001 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 106140 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 28231 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 14482 |
| IRS990/OtherLiabilitiesGrp/BOYAmt | 0 | 0 |
| IRS990/OtherLiabilitiesGrp/EOYAmt | 0 | 5508 |
| IRS990/OtherRevenueMiscGrp/BusinessCd | 0 | 900099 |
| IRS990/OtherRevenueMiscGrp/Desc | 0 | MISCELLANEOUS REVENUE |
| IRS990/OtherRevenueMiscGrp/ExclusionAmt | 0 | 4695 |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 0 | 4695 |
| IRS990/OtherRevenueTotalAmt | 0 | 4695 |
| IRS990/OtherSalariesAndWagesGrp/ManagementAndGeneralAmt | 0 | 156284 |
| IRS990/OtherSalariesAndWagesGrp/ProgramServicesAmt | 0 | 1274633 |
| IRS990/OtherSalariesAndWagesGrp/TotalAmt | 0 | 1430917 |
| IRS990/PartialLiquidationInd | 0 | 0 |
| IRS990/PayPremiumsPrsnlBnftCntrctInd | 0 | 0 |
| IRS990/PayrollTaxesGrp/ManagementAndGeneralAmt | 0 | 16347 |
| IRS990/PayrollTaxesGrp/ProgramServicesAmt | 0 | 107366 |
| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 123713 |
| IRS990/PensionPlanContributionsGrp/ManagementAndGeneralAmt | 0 | 6453 |
| IRS990/PensionPlanContributionsGrp/ProgramServicesAmt | 0 | 61036 |
| IRS990/PensionPlanContributionsGrp/TotalAmt | 0 | 67489 |
| IRS990/PledgesAndGrantsReceivableGrp/EOYAmt | 0 | 137974 |
| IRS990/PoliticalCampaignActyInd | 0 | 0 |
| IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt | 0 | 3531 |
| IRS990/PrincipalOfficerNm | 0 | SCOTT GORDON |
| IRS990/ProfessionalFundraisingInd | 0 | 0 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 0 | 611110 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 1 | 611110 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 2 | 611110 |
| IRS990/ProgramServiceRevenueGrp/Desc | 0 | DISTRICT SUBSIDIES |
| IRS990/ProgramServiceRevenueGrp/Desc | 1 | E-RATE |
| IRS990/ProgramServiceRevenueGrp/Desc | 2 | STUDENT ACTIVITIES |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 2321826 |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 1 | 36545 |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 2 | 3588 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 0 | 2321826 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 1 | 36545 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 2 | 3588 |
| IRS990/ProhibitedTaxShelterTransInd | 0 | 0 |
| IRS990/PYExcessBenefitTransInd | 0 | 0 |
| IRS990/QuidProQuoContributionsInd | 0 | 0 |
| IRS990/RcvFndsToPayPrsnlBnftCntrctInd | 0 | 0 |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | -449003 |
| IRS990/RegularMonitoringEnfrcInd | 0 | 1 |
| IRS990/RelatedEntityInd | 0 | 1 |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | 0 |
| IRS990/ReportInvestmentsOtherSecInd | 0 | 0 |
| IRS990/ReportLandBuildingEquipmentInd | 0 | 1 |
| IRS990/ReportOtherAssetsInd | 0 | 1 |
| IRS990/ReportOtherLiabilitiesInd | 0 | 1 |
| IRS990/ReportProgramRelatedInvstInd | 0 | 0 |
| IRS990/RevenueAmt | 0 | 2361959 |
| IRS990/SavingsAndTempCashInvstGrp/EOYAmt | 0 | 485779 |
| IRS990ScheduleA/SchoolInd | 0 | X |
| IRS990ScheduleB/ContributorInformationGrp/ContributorBusinessName/BusinessNameLine1 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorNum | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine1 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine2 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/City | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/State | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/ZIPCode | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/TotalContributionsAmt | 0 | RESTRICTED |
| IRS990/ScheduleBRequiredInd | 0 | 1 |
| IRS990ScheduleD/EquipmentGrp/BookValueAmt | 0 | 163411 |
| IRS990ScheduleD/EquipmentGrp/DepreciationAmt | 0 | 29741 |
| IRS990ScheduleD/EquipmentGrp/OtherCostOrOtherBasisAmt | 0 | 193152 |
| IRS990ScheduleD/ExpensesNotReportedAmt | 0 | 0 |
| IRS990ScheduleD/ExpensesNotRptFinclStmtAmt | 0 | 0 |
| IRS990ScheduleD/ExpensesSubtotalAmt | 0 | 4196947 |
| IRS990ScheduleD/LeaseholdImprovementsGrp/BookValueAmt | 0 | 74935 |
| IRS990ScheduleD/LeaseholdImprovementsGrp/DepreciationAmt | 0 | 2070 |
| IRS990ScheduleD/LeaseholdImprovementsGrp/OtherCostOrOtherBasisAmt | 0 | 77005 |
| IRS990ScheduleD/OtherAssetsOrgGrp/BookValueAmt | 0 | 125000 |
| IRS990ScheduleD/OtherAssetsOrgGrp/BookValueAmt | 1 | 3000 |
| IRS990ScheduleD/OtherAssetsOrgGrp/Desc | 0 | DUE FROM MASTERY CHARTER SCHOOL FOUNDATION |
| IRS990ScheduleD/OtherAssetsOrgGrp/Desc | 1 | DUE FROM OTHER GOVERNMENTAL ENTITIES |
| IRS990ScheduleD/OtherLandBuildingsGrp/BookValueAmt | 0 | 171543 |
| IRS990ScheduleD/OtherLandBuildingsGrp/DepreciationAmt | 0 | 23181 |
| IRS990ScheduleD/OtherLandBuildingsGrp/OtherCostOrOtherBasisAmt | 0 | 194724 |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Amt | 0 | 5508 |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Desc | 0 | DUE TO OTHER GOVERNMENTAL ENTITIES |
| IRS990ScheduleD/RevenueNotReportedAmt | 0 | 0 |
| IRS990ScheduleD/RevenueNotReportedFinclStmtAmt | 0 | 0 |
| IRS990ScheduleD/RevenueSubtotalAmt | 0 | 3747944 |
| IRS990ScheduleD/TotalBookValueLandBuildingsAmt | 0 | 409889 |
| IRS990ScheduleD/TotalBookValueOtherAssetsAmt | 0 | 128000 |
| IRS990ScheduleD/TotalExpensesPerForm990Amt | 0 | 4196947 |
| IRS990ScheduleD/TotalLiabilityAmt | 0 | 5508 |
| IRS990ScheduleD/TotalRevenuePerForm990Amt | 0 | 3747944 |
| IRS990ScheduleD/TotalRevEtcAuditedFinclStmtAmt | 0 | 3747944 |
| IRS990ScheduleD/TotExpnsEtcAuditedFinclStmtAmt | 0 | 4196947 |
| IRS990ScheduleE/ComplianceWithRevProc7550Ind | 0 | 1 |
| IRS990ScheduleE/DiscriminateRaceAdmissPlcyInd | 0 | 0 |
| IRS990ScheduleE/DiscriminateRaceAthltProgInd | 0 | 0 |
| IRS990ScheduleE/DiscriminateRaceEducPlcyInd | 0 | 0 |
| IRS990ScheduleE/DiscriminateRaceEmplmFcultyInd | 0 | 0 |
| IRS990ScheduleE/DiscriminateRaceOtherActyInd | 0 | 0 |
| IRS990ScheduleE/DiscriminateRaceSchsInd | 0 | 0 |
| IRS990ScheduleE/DiscriminateRaceStdntsRghtsInd | 0 | 0 |
| IRS990ScheduleE/DiscriminateRaceUseOfFcltsInd | 0 | 0 |
| IRS990ScheduleE/GovernmentFinancialAidRcvdInd | 0 | 1 |
| IRS990ScheduleE/GovernmentFinancialAidRvkdInd | 0 | 0 |
| IRS990ScheduleE/MaintainCpyOfAllSolInd | 0 | 1 |
| IRS990ScheduleE/MaintainCpyOfBrochuresEtcInd | 0 | 1 |
| IRS990ScheduleE/MaintainRacialCompRecsInd | 0 | 1 |
| IRS990ScheduleE/MaintainScholarshipsRecsInd | 0 | 1 |
| IRS990ScheduleE/NondiscriminatoryPolicyStmtInd | 0 | 1 |
| IRS990ScheduleE/PlcyPblczdViaBroadcastMediaInd | 0 | 1 |
| IRS990ScheduleE/PolicyStmtInBrochuresEtcInd | 0 | 1 |
| IRS990ScheduleE/SupplementalInformationDetail/ExplanationTxt | 0 | THE STUDENT/PARENT HANDBOOK IS DISTRIBUTED ANNUALLY TO ALL FAMILIES AND IS PUBLISHED ON OUR WEBSITE. |
| IRS990ScheduleE/SupplementalInformationDetail/ExplanationTxt | 1 | THE SCHOOL RECEIVES VARIOUS GRANTS FROM THE U.S. DEPARTMENT OF EDUCATION, PASSED THROUGH THE PENNSYLVANIA DEPARTMENT OF EDUCATION, AND ALSO PARTICIPATES IN VARIOUS REIMBURSEMENT PROGRAMS WITH THE PENNSYLVANIA DEPARTMENT OF EDUCATION. |
| IRS990ScheduleE/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | SCHEDULE E, PART I, LINE 3 |
| IRS990ScheduleE/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | SCHEDULE E, PART I, LINE 6 |
| IRS990ScheduleJ/AnyNonFixedPaymentsInd | 0 | 0 |
| IRS990ScheduleJ/BoardOrCommitteeApprovalInd | 0 | X |
| IRS990ScheduleJ/CompBasedOnRevenueOfFlngOrgInd | 0 | 0 |
| IRS990ScheduleJ/CompBsdNetEarnsFlngOrgInd | 0 | 0 |
| IRS990ScheduleJ/CompBsdNetEarnsRltdOrgsInd | 0 | 0 |
| IRS990ScheduleJ/CompBsdOnRevRelatedOrgsInd | 0 | 0 |
| IRS990ScheduleJ/CompensationCommitteeInd | 0 | X |
| IRS990ScheduleJ/CompensationSurveyInd | 0 | X |
| IRS990ScheduleJ/EquityBasedCompArrngmInd | 0 | 0 |
| IRS990ScheduleJ/Form990OfOtherOrganizationsInd | 0 | X |
| IRS990ScheduleJ/InitialContractExceptionInd | 0 | 0 |
| IRS990/ScheduleJRequiredInd | 0 | 1 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BaseCompensationFilingOrgAmt | 0 | 74225 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BonusFilingOrganizationAmount | 0 | 2500 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BonusRelatedOrganizationsAmt | 0 | 6000 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/CompensationBasedOnRltdOrgsAmt | 0 | 63527 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/CompReportPrior990FilingOrgAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/CompReportPrior990RltdOrgsAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/DeferredCompensationFlngOrgAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/DeferredCompRltdOrgsAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsFilingOrgAmt | 0 | 3104 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsRltdOrgsAmt | 0 | 3416 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/OtherCompensationFilingOrgAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/OtherCompensationRltdOrgsAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/PersonNm | 0 | RAYMOND FIELDS |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TitleTxt | 0 | PRINCIPAL-TRANSFERRED IN JUNE 2018 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TotalCompensationFilingOrgAmt | 0 | 79829 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TotalCompensationRltdOrgsAmt | 0 | 72943 |
| IRS990ScheduleJ/SeverancePaymentInd | 0 | 0 |
| IRS990ScheduleJ/SupplementalNonqualRtrPlanInd | 0 | 0 |
| IRS990/ScheduleORequiredInd | 0 | 1 |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 0 | MASTERY PREP ELEMENTARY CHARTER SCHOOL'S FINANCIAL STATEMENTS ARE PREPARED UNDER GOVERNMENTAL AUDITING STANDARDS, WHICH DO NOT REQUIRE DISCLOSURE OF MANAGEMENT'S EVALUATION OF UNCERTAIN TAX POSITIONS. MANAGEMENT HAS PERFORMED THIS EVALUATION AND IS NOT AWARE OF ANY ACTIVITIES THAT WOULD JEOPARDIZE THE SCHOOL'S TAX-EXEMPT STATUS. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 1 | UPDATED BYLAWS WERE ADOPTED ON DECEMBER 16, 2019, THAT INCLUDE THE FOLLOWING CHANGES: 1. BOARD MEMBERS CAN NOW ALSO BE ELECTED FROM PARENTS OF STUDENTS WHO GRADUATED FROM ANY MASTERY SCHOOL WITHIN THE PAST 4 YEARS AND WHO ARE NOMINATED BY THE MASTERY PARENT ACTION TEAM. 2. TERM LIMITS ON RE-ELECTION WERE REMOVED. 3. THE CHAIR OF THE BOARD OF TRUSTEES OF MASTERY CHARTER HIGH SCHOOL SERVES AS THE NON-VOTING, EX-OFFICIO CHAIR OF THE BOARD. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 2 | THE FORM 990 IS PREPARED BY AN INDEPENDENT ACCOUNTING FIRM. THE MASTERY CHARTER HIGH SCHOOL CEO (HEREIN CEO) AND BOARD OF DIRECTORS REVIEW THE FORM 990 BEFORE IT IS SUBMITTED TO THE INTERNAL REVENUE SERVICE. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 3 | EMPLOYEES AND COVERED PERSONS MUST ADHERE TO THE CONFLICT OF INTEREST POLICY. EMPLOYEES UNSURE AS TO WHETHER A CERTAIN TRANSACTION, ACTIVITY, OR RELATIONSHIP CONSTITUTES A CONFLICT OF INTEREST SHOULD DISCUSS IT WITH THEIR IMMEDIATE SUPERVISOR, OR HUMAN RESOURCES, FOR CLARIFICATION. ANY EXCEPTIONS TO THE POLICY MUST BE APPROVED IN WRITING BY THE CEO. FAILURE TO ADHERE TO THIS POLICY, INCLUDING FAILURE TO DISCLOSE ANY CONFLICTS OR TO SEEK AN EXCEPTION, MAY RESULT IN DISCIPLINARY ACTION, UP TO AND INCLUDING TERMINATION. COVERED PERSONS INCLUDE BOARD MEMBERS AND ADMINISTRATORS (DEFINED AS THOSE WHO (A) TAKE OR RECOMMEND OFFICIAL ACTION WHICH IS "NON-MINISTERIAL", THAT IS, THE ACTION IS DISCRETIONARY OR (B) WHO EXERCISE MANAGEMENT OR OPERATIONAL OVERSIGHT). ALL COVERED PERSONS SHALL FILE ANNUALLY A STATEMENT OF FINANCIAL INTEREST WITH THE SCHOOL AT WHICH THEY ARE EMPLOYED OR ON WHICH BOARD THEY SERVE. ANY COVERED PERSON WHO BELIEVES HIMSELF TO HAVE A CONFLICT SHOULD SEEK ADVICE OF COUNSEL AND, IF SO ADVISED, SHOULD RECUSE HIMSELF FROM PARTICIPATION IN THE ACTION CREATING THE POTENTIAL CONFLICT. IF THE COVERED PERSON IS A MEMBER OF THE BOARD AND, IF ADVISED BY COUNSEL, HE SHOULD ALSO DISCLOSE THE POTENTIAL CONFLICT AT THE MEETING OF THE BOARD. SUBJECT TO THE PROVISIONS OF THE PENNSYLVANIA PUBLIC OFFICIAL AND EMPLOYEE ETHICS ACT, CONTRACTS BETWEEN A MASTERY SCHOOL AND A BUSINESS IN WHICH THE COVERED PERSON OR HIS SPOUSE OR CHILD IS ASSOCIATED ARE PROHIBITED. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 4 | THE PRINCIPAL'S COMPENSATION IS REVIEWED AND APPROVED ANNUALLY BY THE BOARD OF DIRECTORS. THE COMPENSATION COMMITTEE USES SURVEY DATA AND INFORMATION FROM COMPARABLE ORGANIZATIONS' FORM 990 TO ANALYZE AND COMPARE COMPENSATION AND MAKE RECOMMENDATIONS TO THE BOARD FOR ITS APPROVAL. THE DELIBERATION BY THE COMPENSATION COMMITTEE AND APPROVAL BY THE BOARD IS DOCUMENTED IN EACH COMMITTEE'S MINUTES. FORM 990, PART VI, SECTION B, LINE 15B: THE SCHOOL DOES NOT HAVE ANY OTHER COMPENSATED INDIVIDUALS THAT MEET THE INTERNAL REVENUE SERVICE DEFINITION OF OFFICER OR KEY EMPLOYEE. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 5 | MASTERY PREP ELEMENTARY CHARTER SCHOOL MAKES ITS GOVERNING DOCUMENTS, CONFLICT OF INTEREST POLICY, AND FINANCIAL STATEMENTS AVAILABLE TO THE PUBLIC UPON REQUEST. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 6 | CONSULTANT SERVICES: PROGRAM SERVICE EXPENSES 112,901. MANAGEMENT AND GENERAL EXPENSES 1,455. TOTAL EXPENSES 114,356. SUBSTITUTE TEACHERS: PROGRAM SERVICE EXPENSES 32,073. TOTAL EXPENSES 32,073. K-7 ALTERNATIVE PUPIL SUPPORT SERVICES: PROGRAM SERVICE EXPENSES 12,760. TOTAL EXPENSES 12,760. PROFESSIONAL SERVICES, SPECIAL EDUCATION: PROGRAM SERVICE EXPENSES 76,332. TOTAL EXPENSES 76,332. PARAPROFESSIONALS/AIDES: PROGRAM SERVICE EXPENSES 129,493. TOTAL EXPENSES 129,493. OTHER PURCHASED SERVICES: PROGRAM SERVICE EXPENSES 73,285. TOTAL EXPENSES 73,285. PROFESSIONAL DEVELOPMENT-TRAINING: PROGRAM SERVICE EXPENSES 100. TOTAL EXPENSES 100. |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | FORM 990, PART IV, LINE 11F: |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | FORM 990, PART VI, SECTION A, LINE 4 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 2 | FORM 990, PART VI, SECTION B, LINE 11B |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 3 | FORM 990, PART VI, SECTION B, LINE 12C |