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| IRS990/ActivityOrMissionDesc | 0 | AN INDEPENDENT DAY SCHOOL PROVIDING EDUCATION FOR STUDENTS FROM K-8 GRADES. |
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| IRS990/Desc | 0 | WESTSIDE NEIGHBORHOOD SCHOOL (THE SCHOOL) IS ACCREDITED BY THE CALIFORNIA ASSOCIATION OF INDEPENDENT SCHOOLS AND THE WESTERN ASSOCIATION OF SCHOOLS AND COLLEGES. THE SCHOOL OPERATES A PRIVATE ELEMENTARY AND MIDDLE SCHOOL, WHICH OFFERS A WELL-ROUNDED ACADEMIC CURRICULUM, INCLUDING LANGUAGE ARTS, MATHEMATICS, SCIENCE, SOCIAL STUDIES, PHYSICAL EDUCATION, ART, MUSIC, TECHNOLOGY AND FOREIGN LANGUAGE. THE SCHOOL'S TOTAL ENROLLMENT IN FISCAL YEAR 2017-18 WAS 525.THE SCHOOL EMBRACES A POSITIVE, CHILD-CENTERED APPROACH TO EDUCATION THAT STRIVES TO FULLY DEVELOP THE POTENTIAL OF EACH STUDENT, INTELLECTUALLY, SOCIALLY, EMOTIONALLY, AND PHYSICALLY. OUR HIGH ACADEMIC AND ETHICAL STANDARDS ENCOURAGE STUDENTS TO TAKE RESPONSIBILITY FOR THEIR LEARNING AND THEIR BEHAVIOR. OUR CURRICULUM IS DESIGNED TO ENGAGE STUDENTS IN A HIGHLY DIFFERENTIATED, PROJECT-BASED, ACTIVE LEARNING CURRICULUM THAT CHALLENGES ALL STUDENTS TO GROW. WE PROVIDE AN ENVIRONMENT WHERE EACH CHILD IS ABLE TO EXPERIENCE SUCCESS, IS CONFIDENT IN TAKING INTELLECTUAL RISKS, WHERE INDIVIDUALS FEEL VALUED IN THEIR DIFFERENCES AND VALUE THE DIFFERENCES IN OTHERS.OUR GOAL IS TO INSTILL IN OUR STUDENTS A LOVE OF LEARNING AND AN UNDERSTANDING OF OUR WORLD, AND TO PROVIDE FOR OUR TEACHERS AND STAFF AN ENVIRONMENT OF COLLEGIALITY AND PROFESSIONAL GROWTH. THE SCHOOL RECOGNIZES THAT CHILDREN HAVE DIFFERENT LEARNING STYLES AND LEARN AT DIFFERENT RATES. OUR PROGRAM IS BUILT FROM THE BEST PRACTICES DERIVED FROM THE PROGRESSIVE, DEVELOPMENTAL AND TRADITIONAL EDUCATIONAL PHILOSOPHIES, AND EMPLOYS A VARIETY OF EXPERIENTIAL AGE-APPROPRIATE ACTIVITIES DESIGNED TO ACCOMMODATE STUDENTS' NEEDS, INVITE THEIR CREATIVITY AND CHALLENGE THEIR GROWTH. WE STRIVE TO BE A COMMUNITY OF LIFELONG LEARNERS, WHERE ACADEMIC EXCELLENCE, CREATIVITY, SENSE OF HUMOR, INDEPENDENCE, SELF-DISCIPLINE AND HIGH MORAL STANDARDS ARE VALUED. |
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| IRS990/Form990PartVIISectionAGrp/TitleTxt | 22 | HEAD OF SCHOOL |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 23 | DIRECTOR OF FINANCE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 24 | DIRECTOR OF ADVANCEMENT |
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| IRS990/Form990ProvidedToGvrnBodyInd | 0 | 0 |
| IRS990/FormationYr | 0 | 1980 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | 0 |
| IRS990/FSAuditedBasisGrp/SeparateBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | 1 |
| IRS990/FundraisingActivitiesInd | 0 | 1 |
| IRS990/FundraisingAmt | 0 | 132844 |
| IRS990/FundraisingDirectExpensesAmt | 0 | 122391 |
| IRS990/FundraisingGrossIncomeAmt | 0 | 263171 |
| IRS990/GamingActivitiesInd | 0 | 0 |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 22 |
| IRS990/GrantAmt | 0 | 1867153 |
| IRS990/GrantsToDomesticIndividualsGrp/ProgramServicesAmt | 0 | 1867153 |
| IRS990/GrantsToDomesticIndividualsGrp/TotalAmt | 0 | 1867153 |
| IRS990/GrantsToIndividualsInd | 0 | 1 |
| IRS990/GrantsToOrganizationsInd | 0 | 0 |
| IRS990/GrantToRelatedPersonInd | 0 | 0 |
| IRS990/GrossReceiptsAmt | 0 | 18569116 |
| IRS990/GrossRentsGrp/RealAmt | 0 | 87540 |
| IRS990/GroupReturnForAffiliatesInd | 0 | 0 |
| IRS990/IncludeFIN48FootnoteInd | 0 | 1 |
| IRS990/IndependentAuditFinclStmtInd | 0 | 1 |
| IRS990/IndependentVotingMemberCnt | 0 | 22 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 6 |
| IRS990/IndoorTanningServicesInd | 0 | 0 |
| IRS990/InfoInScheduleOPartIIIInd | 0 | X |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InformationTechnologyGrp/ManagementAndGeneralAmt | 0 | 102988 |
| IRS990/InformationTechnologyGrp/ProgramServicesAmt | 0 | 242 |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 103230 |
| IRS990/InsuranceGrp/FundraisingAmt | 0 | 4102 |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 12306 |
| IRS990/InsuranceGrp/ProgramServicesAmt | 0 | 65634 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 82042 |
| IRS990/InterestGrp/ManagementAndGeneralAmt | 0 | 140891 |
| IRS990/InterestGrp/ProgramServicesAmt | 0 | 11432 |
| IRS990/InterestGrp/TotalAmt | 0 | 152323 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 5069 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 5069 |
| IRS990/InvestmentInJointVentureInd | 0 | 0 |
| IRS990/InvestmentsPubTradedSecGrp/BOYAmt | 0 | 935499 |
| IRS990/InvestmentsPubTradedSecGrp/EOYAmt | 0 | 1446737 |
| IRS990/IRPDocumentCnt | 0 | 87 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 4676820 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 11160076 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 11165036 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 15841856 |
| IRS990/LegalDomicileStateCd | 0 | CA |
| 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 | TO CREATE A COMMUNITY OF LIFELONG LEARNERS THAT NURTURES STUDENTS FROM DIVERSE BACKGROUNDS TO REACH THEIR FULL POTENTIAL AND INSPIRE THEM TO CONTRIBUTE TO THE WORLD WITH CONFIDENCE, CREATIVITY, CURIOSITY, CONSCIENCE AND COMPASSION. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | 0 |
| IRS990/MoreThan5000KToOrgInd | 0 | 0 |
| IRS990/MortgNotesPyblScrdInvstPropGrp/BOYAmt | 0 | 1687500 |
| IRS990/MortgNotesPyblScrdInvstPropGrp/EOYAmt | 0 | 3656250 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 3327901 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 3366670 |
| IRS990/NetIncmFromFundraisingEvtGrp/ExclusionAmt | 0 | 140780 |
| IRS990/NetIncmFromFundraisingEvtGrp/TotalRevenueColumnAmt | 0 | 140780 |
| IRS990/NetRentalIncomeOrLossGrp/ExclusionAmt | 0 | 87540 |
| IRS990/NetRentalIncomeOrLossGrp/TotalRevenueColumnAmt | 0 | 87540 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
| IRS990/NetUnrlzdGainsLossesInvstAmt | 0 | 65773 |
| IRS990/NondeductibleContributionsInd | 0 | 0 |
| IRS990/OccupancyGrp/FundraisingAmt | 0 | 153760 |
| IRS990/OccupancyGrp/ManagementAndGeneralAmt | 0 | 479003 |
| IRS990/OccupancyGrp/ProgramServicesAmt | 0 | 2460164 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 3092927 |
| IRS990/OfficeExpensesGrp/FundraisingAmt | 0 | 9468 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 151292 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 16777 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 177537 |
| IRS990/OfficerMailingAddressInd | 0 | 0 |
| IRS990/OperateHospitalInd | 0 | 0 |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsSFAS117Ind | 0 | X |
| IRS990/OtherAssetsTotalGrp/BOYAmt | 0 | 469218 |
| IRS990/OtherAssetsTotalGrp/EOYAmt | 0 | 472166 |
| IRS990/OtherChangesInNetAssetsAmt | 0 | 0 |
| IRS990/OtherEmployeeBenefitsGrp/FundraisingAmt | 0 | 43794 |
| IRS990/OtherEmployeeBenefitsGrp/ManagementAndGeneralAmt | 0 | 110452 |
| IRS990/OtherEmployeeBenefitsGrp/ProgramServicesAmt | 0 | 775583 |
| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 929829 |
| IRS990/OtherExpensesGrp/Desc | 0 | BOOKS AND CLASSROOM EXP |
| IRS990/OtherExpensesGrp/Desc | 1 | CURRICULUM EXPENSES |
| IRS990/OtherExpensesGrp/Desc | 2 | AFTER SCHOOL AND SUMMER |
| IRS990/OtherExpensesGrp/Desc | 3 | BAD DEBT EXPENSE |
| IRS990/OtherExpensesGrp/FundraisingAmt | 0 | 3119 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 25258 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 1 | -135999 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 377757 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 350747 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 2 | 252253 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 406134 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 350747 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 252253 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | -135999 |
| IRS990/OtherLiabilitiesGrp/BOYAmt | 0 | 2452434 |