| IRS990/AccountantCompileOrReviewInd | 0 | 0 |
| IRS990/AccountsPayableAccrExpnssGrp/BOYAmt | 0 | 210415 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 344777 |
| IRS990/AccountsReceivableGrp/BOYAmt | 0 | 8789 |
| IRS990/AccountsReceivableGrp/EOYAmt | 0 | 0 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | 0 |
| IRS990/ActivityOrMissionDesc | 0 | INDEPENDENT NONPROFIT DAY SCHOOL FOR CHILDREN IN GRADES K-6. |
| IRS990/AdvertisingGrp/ManagementAndGeneralAmt | 0 | 7285 |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 7285 |
| IRS990/AllOtherContributionsAmt | 0 | 2084594 |
| IRS990/AllOtherExpensesGrp/FundraisingAmt | 0 | 21601 |
| IRS990/AllOtherExpensesGrp/ManagementAndGeneralAmt | 0 | 23801 |
| IRS990/AllOtherExpensesGrp/ProgramServicesAmt | 0 | 98779 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 144181 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | 1 |
| IRS990/AuditCommitteeInd | 0 | 1 |
| IRS990/BooksInCareOfDetail/BusinessName/BusinessNameLine1Txt | 0 | KEN PARR |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 3104511332 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 438 SAN VICENTE BLVD |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | SANTA MONICA |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | CA |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 90402 |
| IRS990/BusinessRlnWithFamMemInd | 0 | 0 |
| IRS990/BusinessRlnWithOfficerEntInd | 0 | 0 |
| IRS990/BusinessRlnWithOrgMemInd | 0 | 0 |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 330162 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 255635 |
| IRS990/ChangeToOrgDocumentsInd | 0 | 0 |
| IRS990/CntrctRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/CollectionsOfArtInd | 0 | 0 |
| IRS990/CompCurrentOfcrDirectorsGrp/FundraisingAmt | 0 | 224099 |
| IRS990/CompCurrentOfcrDirectorsGrp/ManagementAndGeneralAmt | 0 | 321026 |
| IRS990/CompCurrentOfcrDirectorsGrp/ProgramServicesAmt | 0 | 336694 |
| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 881819 |
| IRS990/CompensationFromOtherSrcsInd | 0 | 0 |
| IRS990/CompensationProcessCEOInd | 0 | 1 |
| IRS990/CompensationProcessOtherInd | 0 | 0 |
| IRS990/ConferencesMeetingsGrp/ManagementAndGeneralAmt | 0 | 1790 |
| IRS990/ConferencesMeetingsGrp/ProgramServicesAmt | 0 | 38886 |
| IRS990/ConferencesMeetingsGrp/TotalAmt | 0 | 40676 |
| IRS990/ConflictOfInterestPolicyInd | 0 | 1 |
| IRS990/ConservationEasementsInd | 0 | 0 |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | 0 |
| IRS990/ContriRptFundraisingEventAmt | 0 | 169249 |
| IRS990/CreditCounselingInd | 0 | 0 |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 2253843 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 618594 |
| IRS990/CYInvestmentIncomeAmt | 0 | 380619 |
| IRS990/CYOtherExpensesAmt | 0 | 2196680 |
| IRS990/CYOtherRevenueAmt | 0 | 137744 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 7554646 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | 607240 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 6904338 |
| IRS990/CYTotalExpensesAmt | 0 | 9719612 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 441169 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 10326852 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | 0 |
| IRS990/DeductibleArtContributionInd | 0 | 0 |
| IRS990/DeductibleNonCashContriInd | 0 | 1 |
| IRS990/DeferredRevenueGrp/BOYAmt | 0 | 5765404 |
| IRS990/DeferredRevenueGrp/EOYAmt | 0 | 5679579 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | 0 |
| IRS990/DepreciationDepletionGrp/ManagementAndGeneralAmt | 0 | 36033 |
| IRS990/DepreciationDepletionGrp/ProgramServicesAmt | 0 | 324298 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 360331 |
| IRS990/Desc | 0 | CARLTHORP SCHOOL IS ACCREDITED BY THE NATIONAL ASSOCIATION OF INDEPENDENT SCHOOLS, THE CALIFORNIA ASSOCIATION OF INDEPENDENT SCHOOLS AND THE WESTERN ASSOCIATION OF SCHOOLS AND COLLEGES. CARLTHORP SCHOOL RECEIVED THE "NO CHILD LEFT BEHIND" NATIONAL BLUE RIBBON OF EXCELLENCE AWARD. 100% OF CARLTHORP SCHOOL'S 2016 GRADUATING CLASSES ATTEND THE SECONDARY SCHOOL OF THEIR FIRST CHOICE.THE SCHOOL IS TRADITIONALLY AND ACADEMICALLY ORIENTED. THE CURRICULUM IS WELL-ROUNDED AND A SOLID ACADEMIC FOUNDATION IN MATH, READING, AND ENGLISH IS STRESSED. TEACHERES UTILIZE DIVERSE TEACHING MODALITIES AND STRATEGIES. WITH TWO CLASSES AT EACH GRADE LEVEL LIMITED TO 20 STUDENTS IN EACH CLASS, EACH STUDENT FROM KINDERGARTEN THROUGH SIXTH GRADE RECEIVED INDIVIDUAL ATTENTION. THOROUGHNESS, ACCURACY AND RESPONSIBILITY ARE STRESSED IN ALL SCHOOLWORK, AND SPECIAL ATTENTION IS GIVEN TO NECESSARY PREPARATION FOR ENTRANCE TO PUBLIC AND PRIVATE SECONDARY SCHOOLS. DURING THE 2015-16 SCHOOL YEAR, THE SCHOOL SERVED APPROXIMATELY 280 STUDENTS. |
| IRS990/DescribedInSection501c3Ind | 0 | 1 |
| IRS990/DisregardedEntityInd | 0 | 0 |
| IRS990/DocumentRetentionPolicyInd | 0 | 1 |
| IRS990/DonorAdvisedFundInd | 0 | 0 |
| IRS990/ElectionOfBoardMembersInd | 0 | 0 |
| IRS990/EmployeeCnt | 0 | 91 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | 1 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | 0 |
| IRS990/ExpenseAmt | 0 | 7758061 |
| IRS990/FamilyOrBusinessRlnInd | 0 | 1 |
| IRS990/FederalGrantAuditRequiredInd | 0 | 0 |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 25500 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 25500 |
| IRS990/FeesForServicesLegalGrp/ManagementAndGeneralAmt | 0 | 29198 |
| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 29198 |
| IRS990/FeesForServicesOtherGrp/ManagementAndGeneralAmt | 0 | 72470 |
| IRS990/FeesForServicesOtherGrp/ProgramServicesAmt | 0 | 12175 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 84645 |
| IRS990/ForeignActivitiesInd | 0 | 0 |
| IRS990/ForeignFinancialAccountInd | 0 | 0 |
| IRS990/ForeignOfficeInd | 0 | 0 |
| IRS990/Form8282PropertyDisposedOfInd | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 1.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 1.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 1.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 1.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 1.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 1.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 1.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 1.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 9 | 1.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 10 | 1.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 11 | 1.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 12 | 1.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 13 | 1.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 14 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 15 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 16 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 17 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 18 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 2 | X |
| 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/IndividualTrusteeOrDirectorInd | 7 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 8 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 9 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 10 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 11 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 12 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 13 | X |
| IRS990/Form990PartVIISectionAGrp/KeyEmployeeInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 0 | 51102 |
| 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 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 13 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 14 | 60208 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 15 | 74774 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 16 | 32400 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 17 | 39494 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 18 | 32654 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | DOROTHY MENZIES |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | PETE ADAMSON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | MIMI BAE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | STEPHEN CONTOPULOS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | ART COPPOLA |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | ALONZO E HILL |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | TIMOTHY JACKMAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | GLYN MILBURN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | SHANNON ROTENBERG |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | STEPHEN KAPLAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | NAVID MAHMOODZADEGAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | PETER SHEEHY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 12 | DAVID HOU |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 13 | LILI F ZANUCK |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 14 | KENNETH PARR |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 15 | TIMOTHY KUSSEROW |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 16 | ROBERT MORIARITY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 17 | LYNN WAGMEISTER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 18 | JASON ANKLOWITZ |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 322341 |
| 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 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 13 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 14 | 176940 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 15 | 234107 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 16 | 123208 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 17 | 119833 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 18 | 109833 |
| 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 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 13 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 14 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 15 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 16 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 17 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 18 | 0 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | HEAD OF SCHOOL |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 10 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 11 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 12 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 13 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 14 | DIRECTOR OF FINANCE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 15 | PRINCIPAL |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 16 | DIRECTOR OF INFORMATION TE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 17 | DIRECTOR OF ADMISSIONS |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 18 | ASSISTANT PRINCIPAL |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | 0 |
| IRS990/FormationYr | 0 | 1939 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | 0 |
| IRS990/FSAuditedBasisGrp/SeparateBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | 1 |
| IRS990/FundraisingActivitiesInd | 0 | 1 |
| IRS990/FundraisingAmt | 0 | 169249 |
| IRS990/FundraisingDirectExpensesAmt | 0 | 110731 |
| IRS990/FundraisingGrossIncomeAmt | 0 | 242810 |
| IRS990/GamingActivitiesInd | 0 | 0 |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 14 |
| IRS990/GrantAmt | 0 | 618594 |
| IRS990/GrantsToDomesticIndividualsGrp/ProgramServicesAmt | 0 | 618594 |
| IRS990/GrantsToDomesticIndividualsGrp/TotalAmt | 0 | 618594 |
| IRS990/GrantsToIndividualsInd | 0 | 1 |
| IRS990/GrantsToOrganizationsInd | 0 | 0 |
| IRS990/GrantToRelatedPersonInd | 0 | 1 |
| IRS990/GrossReceiptsAmt | 0 | 10437583 |
| IRS990/GroupReturnForAffiliatesInd | 0 | 0 |
| IRS990/IncludeFIN48FootnoteInd | 0 | 1 |
| IRS990/IndependentAuditFinclStmtInd | 0 | 1 |
| IRS990/IndependentVotingMemberCnt | 0 | 13 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 6 |
| IRS990/IndoorTanningServicesInd | 0 | 0 |
| IRS990/InfoInScheduleOPartIIIInd | 0 | X |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InfoInScheduleOPartXIInd | 0 | X |
| IRS990/InformationTechnologyGrp/ManagementAndGeneralAmt | 0 | 21146 |
| IRS990/InformationTechnologyGrp/ProgramServicesAmt | 0 | 190311 |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 211457 |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 14497 |
| IRS990/InsuranceGrp/ProgramServicesAmt | 0 | 130474 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 144971 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 380619 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 380619 |
| IRS990/InvestmentInJointVentureInd | 0 | 0 |
| IRS990/InvestmentsPubTradedSecGrp/BOYAmt | 0 | 14220133 |
| IRS990/InvestmentsPubTradedSecGrp/EOYAmt | 0 | 16312737 |
| IRS990/IRPDocumentCnt | 0 | 28 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 4018966 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 5843601 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 5858277 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 9877243 |
| IRS990/LegalDomicileStateCd | 0 | CA |
| IRS990/LoanOutstandingInd | 0 | 1 |
| 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 | CARLTHORP SCHOOL IS AN INDEPENDENT, NONPROFIT DAY SCHOOL FOR CHILDREN IN GRADES K-6. CARLTHORP SCHOOL PROVIDES A STRONG ACADEMIC FOUNDATION IN A DIVERSE AND NURTURING SCHOOL COMMUNITY THAT EMPHASIZES TRADITIONAL VALUES, DISCIPLINED WORK HABITS, AND EXCELLENCE IN ORDER TO PREPARE OUR STUDENTS TO ACHIEVE THEIR HIGHEST POTENTIAL IN EDUCATION AND LIFE.CARLTHORP SCHOOL, ESTABLISHED IN 1939, IS THE OLDEST INDEPENDENT SCHOOL IN SANTA MONICA. THOUGH THE BREADTH OF OUR CURRICULUM HAS RADICALLY EXPANDED IN THE LAST 75 YEARS, OUR BASIC PHILOSOPHY REMAINS THE SAME. WE FOCUS ON THE CHILD AS A WHOLE, HELPING HIM OR HER TO GROW ACADEMICALLY, SOCIALLY, AND ETHICALLY - ALL WITHIN THE FRAMEWORK OF A TRADITIONALLY ACADEMIC SCHOOL. THE SCHOOL'S TRADITIONAL APPROACH TO EDUCATION, COUPLED WITH POSITIVE REINFORCEMENT IN A CARING WHOLESOME ENVIRONMENT PREPARES CHILDREN TO EXCEL IN TODAY'S COMPETITIVE SOCIETY. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | 0 |
| IRS990/MoreThan5000KToOrgInd | 0 | 0 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 28097761 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 30015374 |
| IRS990/NetIncmFromFundraisingEvtGrp/ExclusionAmt | 0 | 132079 |
| IRS990/NetIncmFromFundraisingEvtGrp/TotalRevenueColumnAmt | 0 | 132079 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
| IRS990/NetUnrlzdGainsLossesInvstAmt | 0 | 1411948 |
| IRS990/NoncashContributionsAmt | 0 | 176202 |
| IRS990/NondeductibleContributionsInd | 0 | 0 |
| IRS990/OccupancyGrp/FundraisingAmt | 0 | 7456 |
| IRS990/OccupancyGrp/ManagementAndGeneralAmt | 0 | 26050 |
| IRS990/OccupancyGrp/ProgramServicesAmt | 0 | 3977 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 37483 |
| IRS990/OfficeExpensesGrp/FundraisingAmt | 0 | 2807 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 44513 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 26290 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 73610 |
| IRS990/OfficerMailingAddressInd | 0 | 0 |
| IRS990/OperateHospitalInd | 0 | 0 |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsSFAS117Ind | 0 | X |
| IRS990/OtherChangesInNetAssetsAmt | 0 | -101575 |
| IRS990/OtherEmployeeBenefitsGrp/FundraisingAmt | 0 | 16733 |
| IRS990/OtherEmployeeBenefitsGrp/ManagementAndGeneralAmt | 0 | 86276 |
| IRS990/OtherEmployeeBenefitsGrp/ProgramServicesAmt | 0 | 529124 |
| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 632133 |
| IRS990/OtherExpensesGrp/Desc | 0 | STUDENT ACTIVITIES & ME |
| IRS990/OtherExpensesGrp/Desc | 1 | REPAIRS AND MAINTENANCE |
| IRS990/OtherExpensesGrp/Desc | 2 | PROGRAM SERVICE ACTIVIT |
| IRS990/OtherExpensesGrp/Desc | 3 | CLASSROOM SUPPLIES |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 20835 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 513314 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 187519 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 2 | 168707 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 3 | 127237 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 513314 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 208354 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 168707 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 127237 |
| IRS990/OtherRevenueMiscGrp/BusinessCd | 0 | 900099 |
| IRS990/OtherRevenueMiscGrp/Desc | 0 | MISCELLANEOUS INCOME |
| IRS990/OtherRevenueMiscGrp/ExclusionAmt | 0 | 5665 |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 0 | 5665 |
| IRS990/OtherRevenueTotalAmt | 0 | 5665 |
| IRS990/OtherSalariesAndWagesGrp/FundraisingAmt | 0 | 128739 |
| IRS990/OtherSalariesAndWagesGrp/ManagementAndGeneralAmt | 0 | 657650 |
| IRS990/OtherSalariesAndWagesGrp/ProgramServicesAmt | 0 | 3941756 |
| IRS990/OtherSalariesAndWagesGrp/TotalAmt | 0 | 4728145 |
| IRS990/PartialLiquidationInd | 0 | 0 |
| IRS990/PayPremiumsPrsnlBnftCntrctInd | 0 | 0 |
| IRS990/PayrollTaxesGrp/FundraisingAmt | 0 | 24138 |
| IRS990/PayrollTaxesGrp/ManagementAndGeneralAmt | 0 | 68391 |
| IRS990/PayrollTaxesGrp/ProgramServicesAmt | 0 | 309771 |
| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 402300 |
| IRS990/PensionPlanContributionsGrp/FundraisingAmt | 0 | 15596 |
| IRS990/PensionPlanContributionsGrp/ManagementAndGeneralAmt | 0 | 44190 |
| IRS990/PensionPlanContributionsGrp/ProgramServicesAmt | 0 | 200155 |
| IRS990/PensionPlanContributionsGrp/TotalAmt | 0 | 259941 |
| IRS990/PermanentlyRstrNetAssetsGrp/BOYAmt | 0 | 882113 |
| IRS990/PermanentlyRstrNetAssetsGrp/EOYAmt | 0 | 878113 |
| IRS990/PledgesAndGrantsReceivableGrp/BOYAmt | 0 | 132025 |
| IRS990/PoliticalCampaignActyInd | 0 | 0 |
| IRS990/PrepaidExpensesDefrdChargesGrp/BOYAmt | 0 | 146853 |
| IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt | 0 | 186627 |
| IRS990/PrincipalOfficerNm | 0 | TIMOTHY KUSSEROW |
| IRS990/ProfessionalFundraisingInd | 0 | 0 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 0 | 611600 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 1 | 611710 |
| IRS990/ProgramServiceRevenueGrp/Desc | 0 | TUITION/TUTORING FEES |
| IRS990/ProgramServiceRevenueGrp/Desc | 1 | WORKSHOPS AND ACTIVITIES |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 7331475 |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 1 | 223171 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 0 | 7331475 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 1 | 223171 |
| IRS990/ProhibitedTaxShelterTransInd | 0 | 0 |
| IRS990/PYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/PYContributionsGrantsAmt | 0 | 1427852 |
| IRS990/PYExcessBenefitTransInd | 0 | 0 |
| IRS990/PYGrantsAndSimilarPaidAmt | 0 | 520260 |
| IRS990/PYInvestmentIncomeAmt | 0 | 355746 |
| IRS990/PYOtherExpensesAmt | 0 | 1799273 |
| IRS990/PYOtherRevenueAmt | 0 | -49452 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 7189858 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | 192581 |
| IRS990/PYSalariesCompEmpBnftPaidAmt | 0 | 6411890 |
| IRS990/PYTotalExpensesAmt | 0 | 8731423 |
| IRS990/PYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/PYTotalRevenueAmt | 0 | 8924004 |
| IRS990/QuidProQuoContributionsInd | 0 | 1 |
| IRS990/QuidProQuoContriDisclInd | 0 | 1 |
| IRS990/RcvFndsToPayPrsnlBnftCntrctInd | 0 | 0 |
| IRS990/ReceivablesFromOfficersEtcGrp/BOYAmt | 0 | 111144 |
| IRS990/ReceivablesFromOfficersEtcGrp/EOYAmt | 0 | 114094 |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | 607240 |
| IRS990/RegularMonitoringEnfrcInd | 0 | 1 |
| IRS990/RelatedEntityInd | 0 | 0 |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | 0 |
| IRS990/ReportInvestmentsOtherSecInd | 0 | 0 |
| IRS990/ReportLandBuildingEquipmentInd | 0 | 1 |
| IRS990/ReportOtherAssetsInd | 0 | 0 |
| IRS990/ReportOtherLiabilitiesInd | 0 | 0 |
| IRS990/ReportProgramRelatedInvstInd | 0 | 0 |
| IRS990/RevenueAmt | 0 | 7554646 |
| IRS990/SavingsAndTempCashInvstGrp/BOYAmt | 0 | 13280873 |
| IRS990/SavingsAndTempCashInvstGrp/EOYAmt | 0 | 13312360 |
| 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/BoardDesignatedBalanceEOYPct | 0 | 0.94410 |
| IRS990ScheduleD/BuildingsGrp/BookValueAmt | 0 | 2793159 |
| IRS990ScheduleD/BuildingsGrp/DepreciationAmt | 0 | 3735719 |
| IRS990ScheduleD/BuildingsGrp/OtherCostOrOtherBasisAmt | 0 | 6528878 |
| IRS990ScheduleD/CYEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 18066813 |
| IRS990ScheduleD/CYEndwmtFundGrp/ContributionsAmt | 0 | 250000 |