| IRS990/AccountantCompileOrReviewInd | 0 | 0 |
| IRS990/AccountsPayableAccrExpnssGrp/BOYAmt | 0 | 960546 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 953650 |
| IRS990/AccountsReceivableGrp/BOYAmt | 0 | 1215966 |
| IRS990/AccountsReceivableGrp/EOYAmt | 0 | 2455165 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | 0 |
| IRS990/ActivityOrMissionDesc | 0 | TO PROVIDE INDEPENDENT SCHOOL EDUCATION FOR CHILDREN IN GRADES K THROUGH 8. |
| IRS990/AdvertisingGrp/FundraisingAmt | 0 | 34683 |
| IRS990/AdvertisingGrp/ManagementAndGeneralAmt | 0 | 44903 |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 79586 |
| IRS990/AllOtherContributionsAmt | 0 | 881051 |
| IRS990/AllOtherExpensesGrp/FundraisingAmt | 0 | 3028 |
| IRS990/AllOtherExpensesGrp/ManagementAndGeneralAmt | 0 | 40548 |
| IRS990/AllOtherExpensesGrp/ProgramServicesAmt | 0 | 57843 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 101419 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | 1 |
| IRS990/AuditCommitteeInd | 0 | 1 |
| IRS990/BackupWthldComplianceInd | 0 | 1 |
| IRS990/BooksInCareOfDetail/BusinessName/BusinessNameLine1Txt | 0 | AMANDA PICETTI |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 5105340800 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 3245 SHEFFIELD AVENUE |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | OAKLAND |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | CA |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 94602 |
| IRS990/BusinessRlnWithFamMemInd | 0 | 0 |
| IRS990/BusinessRlnWithOfficerEntInd | 0 | 0 |
| IRS990/BusinessRlnWithOrgMemInd | 0 | 0 |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 4548500 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 4653016 |
| IRS990/ChangeToOrgDocumentsInd | 0 | 0 |
| IRS990/CntrctRcvdGreaterThan100KCnt | 0 | 1 |
| IRS990/CollectionsOfArtInd | 0 | 0 |
| IRS990/CompCurrentOfcrDirectorsGrp/FundraisingAmt | 0 | 79237 |
| IRS990/CompCurrentOfcrDirectorsGrp/ManagementAndGeneralAmt | 0 | 287301 |
| IRS990/CompCurrentOfcrDirectorsGrp/ProgramServicesAmt | 0 | 237712 |
| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 604250 |
| IRS990/CompensationFromOtherSrcsInd | 0 | 0 |
| IRS990/CompensationProcessCEOInd | 0 | 1 |
| IRS990/CompensationProcessOtherInd | 0 | 1 |
| IRS990/ConflictOfInterestPolicyInd | 0 | 1 |
| IRS990/ConservationEasementsInd | 0 | 0 |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | 0 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 0 | 114228 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 0 | 2272 BARROW ST |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 0 | SAN LEANDRO |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 0 | CA |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 0 | 94577 |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 0 | AN JANITORIAL SERVICES |
| IRS990/ContractorCompensationGrp/ServicesDesc | 0 | CUSTODIAL SERVICES |
| IRS990/CreditCounselingInd | 0 | 0 |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 881051 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 1707190 |
| IRS990/CYInvestmentIncomeAmt | 0 | -23 |
| IRS990/CYOtherExpensesAmt | 0 | 3046290 |
| IRS990/CYOtherRevenueAmt | 0 | 197511 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 11787820 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | 917082 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 7195797 |
| IRS990/CYTotalExpensesAmt | 0 | 11949277 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 475959 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 12866359 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | 0 |
| IRS990/DeductibleArtContributionInd | 0 | 0 |
| IRS990/DeductibleNonCashContriInd | 0 | 0 |
| IRS990/DeferredRevenueGrp/BOYAmt | 0 | 4137634 |
| IRS990/DeferredRevenueGrp/EOYAmt | 0 | 5435544 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | 0 |
| IRS990/DepreciationDepletionGrp/FundraisingAmt | 0 | 42070 |
| IRS990/DepreciationDepletionGrp/ManagementAndGeneralAmt | 0 | 102113 |
| IRS990/DepreciationDepletionGrp/ProgramServicesAmt | 0 | 827399 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 971582 |
| IRS990/Desc | 0 | REDWOOD DAY SCHOOL IS AN INDEPENDENT, DIVERSE KINDERGARTEN THROUGH EIGHTH GRADE CO-EDUCATIONAL SCHOOL THAT COMBINES CHALLENGING ACADEMICS, DIFFERENTIATED INSTRUCTION, AND A KEEN AWARENESS OF CHILDREN'S SOCIAL AND EMOTIONAL DEVELOPMENT. OUR INTIMATE LEARNING COMMUNITY OF APPROXIMATELY 400 STUDENTS SITS ON 3.5 ACRES IN THE HEART OF OAKLAND AND ENCOURAGES STUDENTS TO DISCOVER AND NURTURE THEIR STRENGTHS AS INDIVIDUAL LEARNERS WHO THRIVE ACADEMICALLY, CONTRIBUTE TO SOCIETY, AND LEAD HEALTHY, MEANINGFUL LIVES. THROUGH KEEN ATTENTION TO DIFFERENTIATED INSTRUCTION AND VARIED TEACHING METHODOLOGIES, OUR PROGRAM EFFECTIVELY SUPPORTS A WIDE RANGE OF STUDENTS. OUR PARENTS AND GUARDIANS ACTIVELY SUPPORT THE PROGRAM IN MYRIAD WAYS, FROM PARTICIPATING IN THE PARENT GUARDIAN ASSOCIATION, VARIOUS COMMITTEES, TO IN-CLASS AND AROUND SCHOOL VOLUNTEERING. RD IS TRULY A VILLAGE, A STRONG COMMUNITY OF COMMITTED EDUCATORS AND FAMILIES WHO BELIEVE IN THE SCHOOL'S MISSION TO NURTURE EVERY CHILD INTELLECTUALLY AND EMOTIONALLY. |
| IRS990/DescribedInSection501c3Ind | 0 | 1 |
| IRS990/DisregardedEntityInd | 0 | 0 |
| IRS990/DocumentRetentionPolicyInd | 0 | 1 |
| IRS990/DonorAdvisedFundInd | 0 | 0 |
| IRS990/ElectionOfBoardMembersInd | 0 | 0 |
| IRS990/EmployeeCnt | 0 | 107 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | 1 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | 0 |
| IRS990/EscrowAccountInd | 0 | 0 |
| IRS990/ExpenseAmt | 0 | 10193141 |
| IRS990/FamilyOrBusinessRlnInd | 0 | 0 |
| IRS990/FederalGrantAuditRequiredInd | 0 | 0 |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 28700 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 28700 |
| IRS990/FeesForServicesLegalGrp/ManagementAndGeneralAmt | 0 | 31346 |
| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 31346 |
| IRS990/FeesForServicesOtherGrp/FundraisingAmt | 0 | 1987 |
| IRS990/FeesForServicesOtherGrp/ManagementAndGeneralAmt | 0 | 47893 |
| IRS990/FeesForServicesOtherGrp/ProgramServicesAmt | 0 | 39087 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 88967 |
| IRS990/ForeignActivitiesInd | 0 | 0 |
| IRS990/ForeignFinancialAccountInd | 0 | 0 |
| IRS990/ForeignOfficeInd | 0 | 0 |
| IRS990/Form8282PropertyDisposedOfInd | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 9 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 10 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 11 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 12 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 13 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 14 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 15 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 16 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 17 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 18 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 19 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 20 | 50.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 21 | 50.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 22 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 23 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 24 | 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/IndividualTrusteeOrDirectorInd | 14 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 15 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 16 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 17 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 18 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 19 | 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 | 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 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 15 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 16 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 17 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 18 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 19 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 20 | 35837 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 21 | 48531 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 22 | 19777 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 23 | 16873 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 24 | 14644 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | MARY WALTER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | GALIA SZURLEY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | ALAN CHAMORRO |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | ALICIA FENRICK |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | ANDI OWEN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | AUDREY YAMAMOTO |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | BILL SCOTT |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | CHARLIE SOULIS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | CHRISTINE CHEN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | GARNER WENG |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | ISAVANE SAMANNA |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | JEFF FEARN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 12 | JOE HARVEY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 13 | JOHN KINNAMAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 14 | LINDSEY COLLINS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 15 | MAR BRANDT |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 16 | MONICA STEVENS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 17 | PHRED STARKWEATHER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 18 | STEVE BARRETTO |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 19 | SUZANNE SKIPPER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 20 | JOHN LOESER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 21 | MATTHEW DUKE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 22 | CHERYL TING |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 23 | DENISE BRELAND |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 24 | KELLY NELSON |
| 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 | 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 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 15 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 16 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 17 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 18 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 19 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 20 | 310000 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 21 | 153800 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 22 | 118183 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 23 | 110652 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 24 | 113294 |
| 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/ReportableCompFromRltdOrgAmt | 19 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 20 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 21 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 22 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 23 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 24 | 0 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | CHAIR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | VICE-CHAIR |
| 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 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 15 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 16 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 17 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 18 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 19 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 20 | HEAD OF SCHOOL |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 21 | CFO/COO (THRU 6/15/18) |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 22 | ASST. HEAD OF SCHOOL FOR ACADEMICS |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 23 | DEAN OF STUDENT LIFE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 24 | LOWER SCHOOL DIRECTOR |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | 0 |
| IRS990/FormationYr | 0 | 1975 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | 0 |
| IRS990/FSAuditedBasisGrp/SeparateBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | 1 |
| IRS990/FundraisingActivitiesInd | 0 | 1 |
| IRS990/FundraisingDirectExpensesAmt | 0 | 54524 |
| IRS990/FundraisingGrossIncomeAmt | 0 | 190024 |
| IRS990/GainOrLossGrp/SecuritiesAmt | 0 | -37 |
| IRS990/GamingActivitiesInd | 0 | 0 |
| IRS990/GamingDirectExpensesAmt | 0 | 0 |
| IRS990/GamingGrossIncomeAmt | 0 | 1755 |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 20 |
| IRS990/GrantAmt | 0 | 1707190 |
| IRS990/GrantsToDomesticIndividualsGrp/ProgramServicesAmt | 0 | 1707190 |
| IRS990/GrantsToDomesticIndividualsGrp/TotalAmt | 0 | 1707190 |
| IRS990/GrantsToIndividualsInd | 0 | 1 |
| IRS990/GrantsToOrganizationsInd | 0 | 0 |
| IRS990/GrantToRelatedPersonInd | 0 | 0 |
| IRS990/GrossAmountSalesAssetsGrp/SecuritiesAmt | 0 | 82897 |
| IRS990/GrossReceiptsAmt | 0 | 13003817 |
| IRS990/GrossRentsGrp/RealAmt | 0 | 58499 |
| IRS990/GroupReturnForAffiliatesInd | 0 | 0 |
| IRS990/IncludeFIN48FootnoteInd | 0 | 1 |
| IRS990/IndependentAuditFinclStmtInd | 0 | 1 |
| IRS990/IndependentVotingMemberCnt | 0 | 20 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 5 |
| IRS990/IndoorTanningServicesInd | 0 | 0 |
| IRS990/InfoInScheduleOPartIIIInd | 0 | X |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InformationTechnologyGrp/FundraisingAmt | 0 | 7538 |
| IRS990/InformationTechnologyGrp/ManagementAndGeneralAmt | 0 | 18297 |
| IRS990/InformationTechnologyGrp/ProgramServicesAmt | 0 | 148254 |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 174089 |
| IRS990/InsuranceGrp/FundraisingAmt | 0 | 2682 |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 6510 |
| IRS990/InsuranceGrp/ProgramServicesAmt | 0 | 52746 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 61938 |
| IRS990/InterestGrp/FundraisingAmt | 0 | 10506 |
| IRS990/InterestGrp/ManagementAndGeneralAmt | 0 | 25502 |
| IRS990/InterestGrp/ProgramServicesAmt | 0 | 206634 |
| IRS990/InterestGrp/TotalAmt | 0 | 242642 |
| IRS990/InventoriesForSaleOrUseGrp/BOYAmt | 0 | 5286 |
| IRS990/InventoriesForSaleOrUseGrp/EOYAmt | 0 | 2738 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 14 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 14 |
| IRS990/InvestmentInJointVentureInd | 0 | 0 |
| IRS990/InvestTaxExemptBondsInd | 0 | 0 |
| IRS990/IRPDocumentCnt | 0 | 59 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 7344849 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 19908597 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 20106908 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 27451757 |
| IRS990/LegalDomicileStateCd | 0 | CA |
| IRS990/LessCostOthBasisSalesExpnssGrp/SecuritiesAmt | 0 | 82934 |
| IRS990/LessRentalExpensesGrp/RealAmt | 0 | 0 |
| 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 | REDWOOD DAY INSPIRES STUDENTS TO REACH FOR THEIR NEXT CHALLENGE, EMBRACE DIFFERENCES AND DEVELOP THE INTELLECTUAL AND EMOTIONAL COURAGE TO BE READY FOR ANYTHING. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | 0 |
| IRS990/MoreThan5000KToOrgInd | 0 | 0 |
| IRS990/MortgNotesPyblScrdInvstPropGrp/BOYAmt | 0 | 120355 |
| IRS990/MortgNotesPyblScrdInvstPropGrp/EOYAmt | 0 | 0 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 13802653 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 14719735 |
| IRS990/NetGainOrLossInvestmentsGrp/ExclusionAmt | 0 | -37 |
| IRS990/NetGainOrLossInvestmentsGrp/TotalRevenueColumnAmt | 0 | -37 |
| IRS990/NetIncmFromFundraisingEvtGrp/ExclusionAmt | 0 | 135500 |
| IRS990/NetIncmFromFundraisingEvtGrp/TotalRevenueColumnAmt | 0 | 135500 |
| IRS990/NetIncomeFromGamingGrp/ExclusionAmt | 0 | 1755 |
| IRS990/NetIncomeFromGamingGrp/TotalRevenueColumnAmt | 0 | 1755 |
| IRS990/NetRentalIncomeOrLossGrp/ExclusionAmt | 0 | 58499 |
| IRS990/NetRentalIncomeOrLossGrp/TotalRevenueColumnAmt | 0 | 58499 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
| IRS990/NoncashContributionsAmt | 0 | 4040 |
| IRS990/NondeductibleContributionsInd | 0 | 0 |
| IRS990/OccupancyGrp/FundraisingAmt | 0 | 19768 |
| IRS990/OccupancyGrp/ManagementAndGeneralAmt | 0 | 47983 |
| IRS990/OccupancyGrp/ProgramServicesAmt | 0 | 388791 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 456542 |
| IRS990/OfficeExpensesGrp/FundraisingAmt | 0 | 13055 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 55986 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 69041 |
| IRS990/OfficerMailingAddressInd | 0 | 0 |
| IRS990/OnBehalfOfIssuerInd | 0 | 0 |
| IRS990/OperateHospitalInd | 0 | 0 |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsSFAS117Ind | 0 | X |
| IRS990/OtherChangesInNetAssetsAmt | 0 | 0 |
| IRS990/OtherEmployeeBenefitsGrp/FundraisingAmt | 0 | 39255 |
| IRS990/OtherEmployeeBenefitsGrp/ManagementAndGeneralAmt | 0 | 61480 |
| IRS990/OtherEmployeeBenefitsGrp/ProgramServicesAmt | 0 | 818552 |
| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 919287 |
| IRS990/OtherExpensesGrp/Desc | 0 | ACADEMIC EXPENSES |
| IRS990/OtherExpensesGrp/Desc | 1 | PGA ACTIVITIES |
| IRS990/OtherExpensesGrp/Desc | 2 | BAD DEBT |
| IRS990/OtherExpensesGrp/Desc | 3 | ASSET DISPOSAL |
| IRS990/OtherExpensesGrp/FundraisingAmt | 0 | 29623 |
| IRS990/OtherExpensesGrp/FundraisingAmt | 1 | 4712 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 71903 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 1 | 67 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 2 | 5043 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 3 | 179 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 582612 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 29983 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 684138 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 34762 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 5043 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 179 |
| IRS990/OtherLiabilitiesGrp/BOYAmt | 0 | 169450 |
| IRS990/OtherLiabilitiesGrp/EOYAmt | 0 | 81950 |
| IRS990/OtherRevenueMiscGrp/BusinessCd | 0 | 900099 |
| IRS990/OtherRevenueMiscGrp/Desc | 0 | MERCHANT REBATE |
| IRS990/OtherRevenueMiscGrp/RelatedOrExemptFuncIncomeAmt | 0 | 1757 |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 0 | 1757 |
| IRS990/OtherRevenueTotalAmt | 0 | 1757 |
| IRS990/OtherSalariesAndWagesGrp/FundraisingAmt | 0 | 159716 |
| IRS990/OtherSalariesAndWagesGrp/ManagementAndGeneralAmt | 0 | 340871 |