Liabilities / Assets
35th percentile
Higher debt load relative to assets than 35% of similar nonprofits.
EIN 33-0358815 • 501(c)3 • Corona del Mar, CA
Profile
Support Harbor Day School
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
35th percentile
Higher debt load relative to assets than 35% of similar nonprofits.
Liabilities / Revenue
71st percentile
Higher debt load relative to revenue than 71% of similar nonprofits.
Net Margin
72nd percentile
Higher net margin than 72% of similar nonprofits.
Top Officer Pay
Score unavailable
No filing with officer rows is available for this organization yet.
Asset Growth
35th percentile
Faster asset growth than 35% of similar nonprofits.
Revenue Growth
7th percentile
Faster revenue growth than 7% of similar nonprofits.
Assets
Up$23,141,205
Up $352,356 (+1.5%) from 2022
Liabilities
Up$1,757,796
Up $1,231,762 (+234%) from 2022
Net Assets
Down$21,383,409
Down $879,406 (-4.0%) from 2022
Revenue
Down$3,178,686
Down $4,820,990 (-60%) from 2022
Expenses
Down$2,596,780
Down $11,686,636 (-82%) from 2022
Net Income
Up$581,906
Up $6,865,646 (+109%) from 2022
Most recent year
2024 • Form 990Facts available. Structured filing facts are available, but richer extracted sections are limited.
Support Harbor Day School
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Investments in Publicly Traded Securities | $8,770,115 | $9,993,297 | ▲ $1,223,182 |
| Pledges and Grants Receivable | $10,798,171 | $8,229,065 | ▼ $2,569,106 |
| Savings and Temporary Cash Investments | $1,577,643 | $3,255,084 | ▲ $1,677,441 |
| Land, Buildings, and Equipment, Net | $1,484,799 | $1,469,419 | ▼ $15,380 |
| Cash and Non-Interest-Bearing Accounts | $8,974 | $33,461 | ▲ $24,487 |
| Prepaid Expenses and Deferred Charges | $2,700 | $2,700 | → $0 |
| Accounts Receivable | - | $0 | - |
| Other Notes and Loans Receivable, Net | - | $0 | - |
| Receivable From Disqualified Prsn | - | $0 | - |
| Receivables From Officers Etc | - | $0 | - |
| Investments Other Securities | - | $0 | - |
| Investments Program Related | - | $0 | - |
| Intangible Assets | - | $0 | - |
| Inventories for Sale or Use | - | $0 | - |
| Total Assets | $22,642,402 | $23,141,205 | ▲ $498,803 |
| Other Assets Total | - | $158,179 | - |
| Liabilities | |||
| Other Liabilities | $1,400,977 | $1,400,972 | ▼ $5 |
| Mortgage Notes Payable Secured by Investment Property | $428,939 | $340,434 | ▼ $88,505 |
| Accounts Payable and Accrued Expenses | $10,983 | $16,390 | ▲ $5,407 |
| Total Liabilities | $1,840,899 | $1,757,796 | ▼ $83,103 |
| Net Assets / Fund Balance | |||
| Net Assets Without Donor Restrictions | $9,537,860 | $11,110,594 | ▲ $1,572,734 |
| Net Assets With Donor Restrictions | $11,263,643 | $10,272,815 | ▼ $990,828 |
| Total Net Assets Fund Balance | $20,801,503 | $21,383,409 | ▲ $581,906 |
| Total Liabilities and Net Assets / Fund Balance | $22,642,402 | $23,141,205 | ▲ $498,803 |
| Asset | Book Value | Depreciation | Basis |
|---|---|---|---|
| Other Land Buildings | $1,469,419 | $176,446 | $1,645,865 |
| Period | Beginning | Contrib. | Gain/Loss | Other Uses | End |
|---|---|---|---|---|---|
| 2023 | $6,811,974 | $1,164,918 | ▲ $538,181 | $3,066,974 | $5,448,099 |
| 2022 | $9,111,200 | $375,533 | ▲ $651,602 | $3,326,361 | $6,811,974 |
| 2021 | $13,292,563 | $1,307,497 | ▼ $1,287,067 | $4,201,793 | $9,111,200 |
| 2020 | $25,276,884 | $930,838 | ▲ $2,900,690 | $15,815,849 | $13,292,563 |
| 2019 | $23,148,461 | $1,279,477 | ▲ $848,946 | - | $25,276,884 |
| Name | Title |
|---|---|
| Rich Taketa | President |
| David Royal | Director of Finance |
| Chris Lal | Trustee |
| Kevin Gray | Trustee |
| Micah Jindal | Trustee |
| Steven Wang | Trustee |
| Angela Evans | Head of School |
| Nicole Townes | Secretary |
| Brian Gooding | Treasurer |
| Contribution Type | Contribution Count | Reported Amount |
|---|---|---|
| Securities Publicly Traded | 2 | $121,404 |
| Total Noncash Contributions | 2 | $121,404 |
| Line Item | Amount |
|---|---|
| Other Expenses | $2,589,780 |
| Total Fundraising Expense | $342,734 |
| Salaries, Compensation, and Employee Benefits | $7,000 |
| Grants and Similar Amounts Paid | $0 |
| Professional Fundraising Fees | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Payments to Affiliates | $2,196,246 | - | - | $2,196,246 |
| Advertising | - | - | $268,195 | $268,195 |
| Office Expenses | - | - | $13,578 | $13,578 |
| Interest | - | $12,009 | - | $12,009 |
| Fees for Services Accounting | - | $8,000 | - | $8,000 |
| Other Salaries and Wages | - | - | $7,000 | $7,000 |
| Other Expenses | - | $800 | $53,961 | $800 |
| Total Functional Expenses | $2,196,246 | $57,800 | $342,734 | $2,596,780 |
| Line Item | Amount |
|---|---|
| Expenses per Audited Statements | $2,596,780 |
| Total Expenses per Audited Statements | $2,596,780 |
| Total Expenses per Form 990 | $2,596,780 |
| Line Item | Amount |
|---|---|
| Fundraising Gross Income | $408,348 |
| Fundraising Direct Expenses | $95,706 |
| Professional Fundraising Fees | $0 |
| Event | Gross Receipts | Gross Revenue | Direct Expenses | Net Income |
|---|---|---|---|---|
| Fall Benefit | $408,348 | $408,348 | $95,706 | $312,642 |
| Total Events | $408,348 | $408,348 | $95,706 | $312,642 |
| Line Item | Beginning | End | Change |
|---|---|---|---|
| Receivables from Disqualified Persons | - | $0 | - |
| Receivables from Officers, Directors, Trustees, and Key Employees | - | $0 | - |
| Liability | Amount |
|---|---|
| Due to Related Entity - HDS | $1,400,972 |
“Form 990 was provided to the Board Chair for review prior to filing.”
“Completion of a questionnaire is required, and is reviewed by Board chair who either approves or resolves any issues.”
“Governing documents, policies and financial statements are available upon request.”
“Harbor Day Endowment will utilize its earnings to supplement the board designated quasi-endowment as well as to fund the scholarships and programs for Harbor Day School, a related organization.”
This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.
| Path | # | Value |
|---|---|---|
| IRS990/AccountantCompileOrReviewInd | 0 | false |
| IRS990/AccountsPayableAccrExpnssGrp/BOYAmt | 0 | 10983 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 16390 |
| IRS990/AccountsReceivableGrp/EOYAmt | 0 | 0 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | false |
| IRS990/ActivityOrMissionDesc | 0 | Support Harbor Day School |
| IRS990/AdvertisingGrp/FundraisingAmt | 0 | 268195 |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 268195 |
| IRS990/AllOtherContributionsAmt | 0 | 1892131 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 0 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | true |
| IRS990/AuditCommitteeInd | 0 | true |
| IRS990/BackupWthldComplianceInd | 0 | false |
| IRS990/BenefitsToMembersGrp/TotalAmt | 0 | 0 |
| IRS990/BooksInCareOfDetail/PersonNm | 0 | David Royal |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 9496401410 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 3443 Pacific View Drive |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | Corona del Mar |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | CA |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 92625 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | false |
| IRS990/BusinessRlnWithFamMemInd | 0 | false |
| IRS990/BusinessRlnWithOrgMemInd | 0 | false |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 8974 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 33461 |
| IRS990/ChangeToOrgDocumentsInd | 0 | false |
| IRS990/CntrctRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/CollectionsOfArtInd | 0 | false |
| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 0 |
| IRS990/CompDisqualPersonsGrp/TotalAmt | 0 | 0 |
| IRS990/CompensationFromOtherSrcsInd | 0 | false |
| IRS990/CompensationProcessCEOInd | 0 | false |
| IRS990/CompensationProcessOtherInd | 0 | false |
| IRS990/ConferencesMeetingsGrp/TotalAmt | 0 | 0 |
| IRS990/ConflictOfInterestPolicyInd | 0 | true |
| IRS990/ConservationEasementsInd | 0 | false |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | true |
| IRS990/CreditCounselingInd | 0 | false |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 1892131 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/CYInvestmentIncomeAmt | 0 | 973913 |
| IRS990/CYOtherExpensesAmt | 0 | 2589780 |
| IRS990/CYOtherRevenueAmt | 0 | 312642 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 0 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | 581906 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 7000 |
| IRS990/CYTotalExpensesAmt | 0 | 2596780 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 342734 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 3178686 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | false |
| IRS990/DeductibleArtContributionInd | 0 | false |
| IRS990/DeductibleNonCashContriInd | 0 | true |
| IRS990/DelegationOfMgmtDutiesInd | 0 | false |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 0 |
| IRS990/Desc | 0 | To provide financial support to Harbor Day School. |
| IRS990/DescribedInSection501c3Ind | 0 | true |
| IRS990/DisregardedEntityInd | 0 | true |
| IRS990/DocumentRetentionPolicyInd | 0 | true |
| IRS990/DonorAdvisedFundInd | 0 | false |
| IRS990/DonorRestrictionNetAssetsGrp/BOYAmt | 0 | 11263643 |
| IRS990/DonorRestrictionNetAssetsGrp/EOYAmt | 0 | 10272815 |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | true |
| IRS990/ElectionOfBoardMembersInd | 0 | false |
| IRS990/EmployeeCnt | 0 | 0 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | false |
| IRS990/ExpenseAmt | 0 | 2196246 |
| IRS990/FamilyOrBusinessRlnInd | 0 | false |
| IRS990/FederalGrantAuditRequiredInd | 0 | false |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 8000 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 8000 |
| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 0 |
| IRS990/FeesForServicesLobbyingGrp/TotalAmt | 0 | 0 |
| IRS990/FeesForServicesManagementGrp/TotalAmt | 0 | 0 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 0 |
| IRS990/FeesForServicesProfFundraising/TotalAmt | 0 | 0 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/TotalAmt | 0 | 0 |
| IRS990/ForeignActivitiesInd | 0 | false |
| IRS990/ForeignFinancialAccountInd | 0 | false |
| IRS990/ForeignGrantsGrp/TotalAmt | 0 | 0 |
| IRS990/ForeignOfficeInd | 0 | false |
| IRS990/Form1098CFiledInd | 0 | false |
| IRS990/Form8282FiledCnt | 0 | 0 |
| IRS990/Form8282PropertyDisposedOfInd | 0 | false |
| IRS990/Form8899Filedind | 0 | false |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 0 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 1 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 2 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 3 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 4 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 5 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 6 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 7 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 8 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 1.00 |
| 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/OfficerInd | 4 | X |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 0 | 50320 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 1 | 11800 |
| 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/PersonNm | 0 | Angela Evans |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | David Royal |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | Rich Taketa |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | Brian Gooding |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | Nicole Townes |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | Chris Lal |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | Kevin Gray |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | Micah Jindal |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | Steven Wang |
| 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/ReportableCompFromRltdOrgAmt | 0 | 404500 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 1 | 236000 |
| 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/TitleTxt | 0 | Head of School |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | Dir of Finance |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | President |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | Treasurer |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | Secretary |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | Trustee |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | false |
| IRS990/FormationYr | 0 | 1989 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | false |
| IRS990/FSAuditedBasisGrp/ConsolAndSepBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | true |
| IRS990/FundraisingActivitiesInd | 0 | true |
| IRS990/FundraisingDirectExpensesAmt | 0 | 95706 |
| IRS990/FundraisingGrossIncomeAmt | 0 | 408348 |
| IRS990/GainOrLossGrp/SecuritiesAmt | 0 | -177193 |
| IRS990/GamingActivitiesInd | 0 | false |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 7 |
| IRS990/GrantAmt | 0 | 2196246 |
| IRS990/GrantsToDomesticIndividualsGrp/TotalAmt | 0 | 0 |
| IRS990/GrantsToDomesticOrgsGrp/TotalAmt | 0 | 0 |
| IRS990/GrantsToIndividualsInd | 0 | false |
| IRS990/GrantsToOrganizationsInd | 0 | false |
| IRS990/GrantToRelatedPersonInd | 0 | false |
| IRS990/GrossAmountSalesAssetsGrp/SecuritiesAmt | 0 | 2766698 |
| IRS990/GrossReceiptsAmt | 0 | 6218283 |
| IRS990/GroupReturnForAffiliatesInd | 0 | false |
| IRS990/IncludeFIN48FootnoteInd | 0 | false |
| IRS990/IncmFromInvestBondProceedsGrp/TotalRevenueColumnAmt | 0 | 0 |
| IRS990/IndependentAuditFinclStmtInd | 0 | true |
| IRS990/IndependentVotingMemberCnt | 0 | 7 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/IndoorTanningServicesInd | 0 | false |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 0 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 0 |
| IRS990/IntangibleAssetsGrp/EOYAmt | 0 | 0 |
| IRS990/InterestGrp/ManagementAndGeneralAmt | 0 | 12009 |
| IRS990/InterestGrp/TotalAmt | 0 | 12009 |
| IRS990/InventoriesForSaleOrUseGrp/EOYAmt | 0 | 0 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 1151106 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 1151106 |
| IRS990/InvestmentInJointVentureInd | 0 | false |
| IRS990/InvestmentsOtherSecuritiesGrp/EOYAmt | 0 | 0 |
| IRS990/InvestmentsProgramRelatedGrp/EOYAmt | 0 | 0 |
| IRS990/InvestmentsPubTradedSecGrp/BOYAmt | 0 | 8770115 |
| IRS990/InvestmentsPubTradedSecGrp/EOYAmt | 0 | 9993297 |
| IRS990/IRPDocumentCnt | 0 | 0 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 176446 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 1484799 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 1469419 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 1645865 |
| IRS990/LegalDomicileStateCd | 0 | CA |
| IRS990/LessCostOthBasisSalesExpnssGrp/SecuritiesAmt | 0 | 2943891 |
| IRS990/LoanOutstandingInd | 0 | false |
| IRS990/LobbyingActivitiesInd | 0 | false |
| IRS990/LocalChaptersInd | 0 | false |
| IRS990/MaterialDiversionOrMisuseInd | 0 | false |
| IRS990/MembersOrStockholdersInd | 0 | false |
| IRS990/MethodOfAccountingAccrualInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | false |
| IRS990/MinutesOfGoverningBodyInd | 0 | true |
| IRS990/MissionDesc | 0 | Support Harbor Day School |
| IRS990/MoreThan5000KToIndividualsInd | 0 | false |
| IRS990/MoreThan5000KToOrgInd | 0 | false |
| IRS990/MortgNotesPyblScrdInvstPropGrp/BOYAmt | 0 | 428939 |
| IRS990/MortgNotesPyblScrdInvstPropGrp/EOYAmt | 0 | 340434 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 20801503 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 21383409 |
| IRS990/NetGainOrLossInvestmentsGrp/RelatedOrExemptFuncIncomeAmt | 0 | -177193 |
| IRS990/NetGainOrLossInvestmentsGrp/TotalRevenueColumnAmt | 0 | -177193 |
| IRS990/NetIncmFromFundraisingEvtGrp/ExclusionAmt | 0 | 312642 |
| IRS990/NetIncmFromFundraisingEvtGrp/TotalRevenueColumnAmt | 0 | 312642 |
| IRS990/NetIncomeFromGamingGrp/TotalRevenueColumnAmt | 0 | 0 |
| IRS990/NetIncomeOrLossGrp/TotalRevenueColumnAmt | 0 | 0 |
| IRS990/NetRentalIncomeOrLossGrp/TotalRevenueColumnAmt | 0 | 0 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 9537860 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 11110594 |
| IRS990/NoncashContributionsAmt | 0 | 121404 |
| IRS990/NondeductibleContributionsInd | 0 | false |
| IRS990/OccupancyGrp/TotalAmt | 0 | 0 |
| IRS990/OfficeExpensesGrp/FundraisingAmt | 0 | 13578 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 13578 |
| IRS990/OfficerMailingAddressInd | 0 | false |
| IRS990/OperateHospitalInd | 0 | false |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherAssetsTotalGrp/EOYAmt | 0 | 158179 |
| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 0 |
| IRS990/OtherExpensesGrp/Desc | 0 | Credit Card Processing Fees |
| IRS990/OtherExpensesGrp/Desc | 1 | Property Taxes |
| IRS990/OtherExpensesGrp/Desc | 2 | Depreciation |
| IRS990/OtherExpensesGrp/Desc | 3 | Taxes and Licenses |
| IRS990/OtherExpensesGrp/FundraisingAmt | 0 | 53961 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 21616 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 1 | 15375 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 2 | 800 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 53961 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 21616 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 15375 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 800 |
| IRS990/OtherLiabilitiesGrp/BOYAmt | 0 | 1400977 |
| IRS990/OtherLiabilitiesGrp/EOYAmt | 0 | 1400972 |
| IRS990/OtherRevenueTotalAmt | 0 | 0 |
| IRS990/OtherSalariesAndWagesGrp/FundraisingAmt | 0 | 7000 |
| IRS990/OtherSalariesAndWagesGrp/TotalAmt | 0 | 7000 |
| IRS990/OthNotesLoansReceivableNetGrp/EOYAmt | 0 | 0 |
| IRS990/PartialLiquidationInd | 0 | false |
| IRS990/PaymentsToAffiliatesGrp/ProgramServicesAmt | 0 | 2196246 |
| IRS990/PaymentsToAffiliatesGrp/TotalAmt | 0 | 2196246 |
| IRS990/PayPremiumsPrsnlBnftCntrctInd | 0 | false |
| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 0 |
| IRS990/PensionPlanContributionsGrp/TotalAmt | 0 | 0 |
| IRS990/PledgesAndGrantsReceivableGrp/BOYAmt | 0 | 10798171 |
| IRS990/PledgesAndGrantsReceivableGrp/EOYAmt | 0 | 8229065 |
| IRS990/PoliticalCampaignActyInd | 0 | false |
| IRS990/PrepaidExpensesDefrdChargesGrp/BOYAmt | 0 | 2700 |
| IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt | 0 | 2700 |
| IRS990/ProfessionalFundraisingInd | 0 | false |
| IRS990/ProhibitedTaxShelterTransInd | 0 | false |
| IRS990/PYContributionsGrantsAmt | 0 | 9733948 |
| IRS990/PYExcessBenefitTransInd | 0 | false |
| IRS990/PYInvestmentIncomeAmt | 0 | 798311 |
| IRS990/PymtTravelEntrtnmntPubOfclGrp/TotalAmt | 0 | 0 |
| IRS990/PYOtherExpensesAmt | 0 | 11958406 |
| IRS990/PYOtherRevenueAmt | 0 | 221138 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | -1461312 |
| IRS990/PYSalariesCompEmpBnftPaidAmt | 0 | 256303 |
| IRS990/PYTotalExpensesAmt | 0 | 12214709 |
| IRS990/PYTotalRevenueAmt | 0 | 10753397 |
| IRS990/QuidProQuoContributionsInd | 0 | false |
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| IRS990/RcvFndsToPayPrsnlBnftCntrctInd | 0 | false |
| IRS990/ReceivablesFromOfficersEtcGrp/EOYAmt | 0 | 0 |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | 581906 |
| IRS990/RegularMonitoringEnfrcInd | 0 | true |
| IRS990/RelatedEntityInd | 0 | true |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | false |
| IRS990/ReportInvestmentsOtherSecInd | 0 | false |
| IRS990/ReportLandBuildingEquipmentInd | 0 | true |
| IRS990/ReportOtherAssetsInd | 0 | false |
| IRS990/ReportOtherLiabilitiesInd | 0 | true |
| IRS990/ReportProgramRelatedInvstInd | 0 | false |
| IRS990/RoyaltiesGrp/TotalAmt | 0 | 0 |
| IRS990/RoyaltiesRevenueGrp/TotalRevenueColumnAmt | 0 | 0 |
| IRS990/SavingsAndTempCashInvstGrp/BOYAmt | 0 | 1577643 |
| IRS990/SavingsAndTempCashInvstGrp/EOYAmt | 0 | 3255084 |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/Contribution35ControlledInd | 0 | false |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/ContributionControllerInd | 0 | false |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/ContributionFamilyInd | 0 | false |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/ControlledDisqualifiedPrsnInd | 0 | false |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/DisqualifiedPrsnControllIntInd | 0 | false |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/DisqualifiedPrsnOwnrIntInd | 0 | false |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/ExcessBusinessHoldingsRulesInd | 0 | false |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/ListedByNameGoverningDocInd | 0 | true |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/LoanDisqualifiedPersonInd | 0 | false |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/OrganizationChangeSuprtOrgInd | 0 | false |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/PaymentSubstantialContribtrInd | 0 | false |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/SupportedOrgNotOrganizedUSInd | 0 | false |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/SupportedOrgSectionC456Ind | 0 | false |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/SupportNonSupportedOrgInd | 0 | false |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/SuprtOrgNoIRSDeterminationInd | 0 | false |
| IRS990ScheduleA/Form990ScheduleAPartVIGrp/ExplanationTxt | 0 | The President of Harbor Day School serves on the Harbor Day Endowment Corporation board, and the Chair of the Harbor Day School Investment Committee serves as the President of Harbor Day Endowment Corporation board. While the remaining four trustees are independent of the Harbor Day School Board, they are parents of students enrolled at Harbor Day School and are committed to the mission of Harbor Day Endowment Corporation to support Harbor Day School. |
| IRS990ScheduleA/Form990ScheduleAPartVIGrp/FormAndLineReferenceDesc | 0 | Part IV, Section C, Line 1: Control Or Management Of Supported Orgs. |
| IRS990ScheduleA/MajorityDirTrstSupportedOrgInd | 0 | false |
| IRS990ScheduleA/OtherSupportSumAmt | 0 | 0 |
| IRS990ScheduleA/SupportedOrganizationsCnt | 0 | 1 |
| IRS990ScheduleA/SupportedOrganizationsTotalCnt | 0 | 1 |
| IRS990ScheduleA/SupportedOrgInformationGrp/EIN | 0 | 952285957 |
| IRS990ScheduleA/SupportedOrgInformationGrp/GoverningDocumentListedInd | 0 | true |
| IRS990ScheduleA/SupportedOrgInformationGrp/OrganizationTypeCd | 0 | 2 |
| IRS990ScheduleA/SupportedOrgInformationGrp/OtherSupportAmt | 0 | 0 |
| IRS990ScheduleA/SupportedOrgInformationGrp/SupportAmt | 0 | 2196246 |
| IRS990ScheduleA/SupportedOrgInformationGrp/SupportedOrganizationName/BusinessNameLine1Txt | 0 | Harbor Day School |
| IRS990ScheduleA/SupportingOrganization509a3Ind | 0 | X |
| IRS990ScheduleA/SupportingOrgType2Ind | 0 | X |
| IRS990ScheduleA/SupportSumAmt | 0 | 2196246 |
| 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 | true |
| IRS990ScheduleD/BoardDesignatedBalanceEOYPct | 0 | 0.70000 |
| IRS990ScheduleD/CYEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 6811974 |
| IRS990ScheduleD/CYEndwmtFundGrp/ContributionsAmt | 0 | 1164918 |
| IRS990ScheduleD/CYEndwmtFundGrp/EndYearBalanceAmt | 0 | 5448099 |
| IRS990ScheduleD/CYEndwmtFundGrp/InvestmentEarningsOrLossesAmt | 0 | 538181 |
| IRS990ScheduleD/CYEndwmtFundGrp/OtherExpendituresAmt | 0 | 3066974 |
| IRS990ScheduleD/CYMinus1YrEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 9111200 |
| IRS990ScheduleD/CYMinus1YrEndwmtFundGrp/ContributionsAmt | 0 | 375533 |
| IRS990ScheduleD/CYMinus1YrEndwmtFundGrp/EndYearBalanceAmt | 0 | 6811974 |
| IRS990ScheduleD/CYMinus1YrEndwmtFundGrp/InvestmentEarningsOrLossesAmt | 0 | 651602 |
| IRS990ScheduleD/CYMinus1YrEndwmtFundGrp/OtherExpendituresAmt | 0 | 3326361 |
| IRS990ScheduleD/CYMinus2YrEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 13292563 |
| IRS990ScheduleD/CYMinus2YrEndwmtFundGrp/ContributionsAmt | 0 | 1307497 |
| IRS990ScheduleD/CYMinus2YrEndwmtFundGrp/EndYearBalanceAmt | 0 | 9111200 |
| IRS990ScheduleD/CYMinus2YrEndwmtFundGrp/InvestmentEarningsOrLossesAmt | 0 | -1287067 |
| IRS990ScheduleD/CYMinus2YrEndwmtFundGrp/OtherExpendituresAmt | 0 | 4201793 |
| IRS990ScheduleD/CYMinus3YrEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 25276884 |
| IRS990ScheduleD/CYMinus3YrEndwmtFundGrp/ContributionsAmt | 0 | 930838 |
| IRS990ScheduleD/CYMinus3YrEndwmtFundGrp/EndYearBalanceAmt | 0 | 13292563 |
| IRS990ScheduleD/CYMinus3YrEndwmtFundGrp/InvestmentEarningsOrLossesAmt | 0 | 2900690 |
| IRS990ScheduleD/CYMinus3YrEndwmtFundGrp/OtherExpendituresAmt | 0 | 15815849 |
| IRS990ScheduleD/CYMinus4YrEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 23148461 |
| IRS990ScheduleD/CYMinus4YrEndwmtFundGrp/ContributionsAmt | 0 | 1279477 |
| IRS990ScheduleD/CYMinus4YrEndwmtFundGrp/EndYearBalanceAmt | 0 | 25276884 |
| IRS990ScheduleD/CYMinus4YrEndwmtFundGrp/InvestmentEarningsOrLossesAmt | 0 | 848946 |
| IRS990ScheduleD/EndowmentsHeldRelatedOrgInd | 0 | false |
| IRS990ScheduleD/EndowmentsHeldUnrelatedOrgInd | 0 | false |
| IRS990ScheduleD/ExpensesSubtotalAmt | 0 | 2596780 |
| IRS990ScheduleD/OtherLandBuildingsGrp/BookValueAmt | 0 | 1469419 |
| IRS990ScheduleD/OtherLandBuildingsGrp/DepreciationAmt | 0 | 176446 |
| IRS990ScheduleD/OtherLandBuildingsGrp/OtherCostOrOtherBasisAmt | 0 | 1645865 |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Amt | 0 | 1400972 |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Desc | 0 | Due to Related Entity - HDS |
| IRS990ScheduleD/PrmnntEndowmentBalanceEOYPct | 0 | 0.17000 |
| IRS990ScheduleD/RelatedOrgListSchRInd | 0 | false |
| IRS990ScheduleD/RevenueSubtotalAmt | 0 | 3178686 |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 0 | Harbor Day Endowment will utilize its earnings to supplement the board designated quasi-endowment as well as to fund the scholarships and programs for Harbor Day School, a related organization. |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | Part V, Line 4: Intended uses of the endowment fund. |
| IRS990ScheduleD/TermEndowmentBalanceEOYPct | 0 | 0.13000 |
| IRS990ScheduleD/TotalBookValueLandBuildingsAmt | 0 | 1469419 |
| IRS990ScheduleD/TotalExpensesPerForm990Amt | 0 | 2596780 |
| IRS990ScheduleD/TotalLiabilityAmt | 0 | 1400972 |
| IRS990ScheduleD/TotalRevenuePerForm990Amt | 0 | 3178686 |
| IRS990ScheduleD/TotalRevEtcAuditedFinclStmtAmt | 0 | 3178686 |
| IRS990ScheduleD/TotExpnsEtcAuditedFinclStmtAmt | 0 | 2596780 |
| IRS990ScheduleG/AgrmtProfFundraisingActyInd | 0 | false |
| IRS990ScheduleG/EmailSolicitationsInd | 0 | X |
| IRS990ScheduleG/FundraisingEventInformationGrp/DirectExpenseSummaryEventsAmt | 0 | 95706 |
| IRS990ScheduleG/FundraisingEventInformationGrp/Event1Nm | 0 | Fall Benefit |
| IRS990ScheduleG/FundraisingEventInformationGrp/GrossReceiptsEvent1Amt | 0 | 408348 |
| IRS990ScheduleG/FundraisingEventInformationGrp/GrossReceiptsTotalAmt | 0 | 408348 |
| IRS990ScheduleG/FundraisingEventInformationGrp/GrossRevenueEvent1Amt | 0 | 408348 |
| IRS990ScheduleG/FundraisingEventInformationGrp/GrossRevenueTotalEventsAmt | 0 | 408348 |
| IRS990ScheduleG/FundraisingEventInformationGrp/NetIncomeSummaryAmt | 0 | 312642 |
| IRS990ScheduleG/FundraisingEventInformationGrp/OthDirectExpnssTotalEventsAmt | 0 | 95706 |
| IRS990ScheduleG/FundraisingEventInformationGrp/OtherDirectExpensesEvent1Amt | 0 | 95706 |
| IRS990ScheduleG/InPersonSolicitationsInd | 0 | X |
| IRS990ScheduleG/MailSolicitationsInd | 0 | X |
| IRS990ScheduleG/PhoneSolicitationsInd | 0 | X |
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