Liabilities / Assets
69th percentile
Higher debt load relative to assets than 69% of similar nonprofits.
EIN 52-1173307 • 501(c)3 • Annapolis, MD
Profile
To keep the Harbour School a safe place where children with learning disabilities become successful learners.
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
69th percentile
Higher debt load relative to assets than 69% of similar nonprofits.
Liabilities / Revenue
68th percentile
Higher debt load relative to revenue than 68% of similar nonprofits.
Net Margin
49th percentile
Higher net margin than 49% of similar nonprofits.
Top Officer Pay
33rd percentile
Higher top officer pay than 33% of similar nonprofits.
Top officer pay equals 0.8% of source-year revenue.
Asset Growth
92nd percentile
Faster asset growth than 92% of similar nonprofits.
Revenue Growth
58th percentile
Faster revenue growth than 58% of similar nonprofits.
Assets
Up$23,024,063
Up $291,830 (+1.3%) from 2024
Liabilities
Down$6,706,032
Down $956,473 (-12%) from 2024
Net Assets
Up$16,318,031
Up $1,248,303 (+8.3%) from 2024
Revenue
Up$19,489,904
Up $862,998 (+4.6%) from 2024
Expenses
Up$18,672,358
Up $1,079,985 (+6.1%) from 2024
Net Income
Down$817,546
Down $216,987 (-21%) from 2024
Most recent year
2025 • Form 990Detailed filing. Detailed filing data is available for this year.
Our purpose is to keep the harbour school a safe place where children with learning disabilities become successful learners.
To keep the Harbour School a safe place where children with learning disabilities become successful learners.
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Investments in Publicly Traded Securities | $9,605,837 | $10,495,974 | ▲ $890,137 |
| Land, Buildings, and Equipment, Net | $2,643,273 | $3,805,080 | ▲ $1,161,807 |
| Accounts Receivable | $1,461,863 | $2,716,756 | ▲ $1,254,893 |
| Cash and Non-Interest-Bearing Accounts | $2,593,427 | $868,750 | ▼ $1,724,677 |
| Prepaid Expenses and Deferred Charges | $156,827 | $150,964 | ▼ $5,863 |
| Receivable From Disqualified Prsn | $77,412 | $44,906 | ▼ $32,506 |
| Total Assets | $22,732,233 | $23,024,063 | ▲ $291,830 |
| Other Assets Total | $6,193,594 | $4,941,633 | ▼ $1,251,961 |
| Liabilities | |||
| Other Liabilities | $6,548,800 | $5,217,719 | ▼ $1,331,081 |
| Accounts Payable and Accrued Expenses | $761,105 | $1,077,619 | ▲ $316,514 |
| Deferred Revenue | $352,600 | $410,694 | ▲ $58,094 |
| Total Liabilities | $7,662,505 | $6,706,032 | ▼ $956,473 |
| Net Assets / Fund Balance | |||
| Net Assets Without Donor Restrictions | $15,014,758 | $16,256,081 | ▲ $1,241,323 |
| Net Assets With Donor Restrictions | $54,970 | $61,950 | ▲ $6,980 |
| Total Net Assets Fund Balance | $15,069,728 | $16,318,031 | ▲ $1,248,303 |
| Total Liabilities and Net Assets / Fund Balance | $22,732,233 | $23,024,063 | ▲ $291,830 |
| Asset | Book Value | Depreciation | Basis |
|---|---|---|---|
| Leasehold Improvements | $3,554,382 | $699,748 | $4,254,130 |
| Equipment | $250,698 | $2,322,375 | $2,573,073 |
| Other Assets Org | $754,820 | - | - |
| Name | Title | Full / Part Time | Base | Other | Total |
|---|---|---|---|---|---|
| Martha D Schneider | Vice President | FT | $131,070 | $28,114 | $159,184 |
| Linda Jacobs | President and Executive Director | FT | $90,797 | $23,753 | $114,550 |
| Name | Title |
|---|---|
| Jill Berie | Board Member |
| Kathleen Fitch | Board Member |
| Renee Catlin | Board Member |
| Robin Vaughn | Board Member |
| Sandra Liotta | Board Member |
| Sen Shelly Hettleman | Board Member |
| Yvonne B Callaway | SecretaryTreasurer |
| Line Item | Amount |
|---|---|
| Salaries, Compensation, and Employee Benefits | $15,439,089 |
| Other Expenses | $3,233,269 |
| Total Fundraising Expense | $830,794 |
| Grants and Similar Amounts Paid | $0 |
| Professional Fundraising Fees | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Other Salaries and Wages | $9,301,343 | $1,560,532 | $571,677 | $11,433,552 |
| Other Employee Benefits | $1,822,868 | $305,831 | $112,037 | $2,240,736 |
| Occupancy | $1,551,155 | $355,582 | - | $1,906,737 |
| Payroll Taxes | $761,468 | $127,755 | $46,802 | $936,025 |
| Pension Plan Contributions | $493,728 | $82,836 | $30,345 | $606,909 |
| Office Expenses | $494,322 | $98,769 | - | $593,091 |
| Depreciation Depletion | $224,403 | $51,441 | - | $275,844 |
| Current Officers, Directors, Trustees, and Key Employees | $180,492 | $30,282 | $11,093 | $221,867 |
| Conferences and Meetings | $40,385 | - | $50,417 | $90,802 |
| Travel | $69,968 | - | - | $69,968 |
| Advertising | - | $60,021 | - | $60,021 |
| Other Expenses | - | $45,581 | $8,423 | $54,004 |
| Fees for Services Other | $25,763 | $23,532 | - | $49,295 |
| Fees for Services Accounting | - | $48,870 | - | $48,870 |
| Fees for Service Investment Mgmnt Fees | - | $47,005 | - | $47,005 |
| Fees for Services Legal | - | $13,599 | - | $13,599 |
| Total Functional Expenses | $14,965,895 | $2,875,669 | $830,794 | $18,672,358 |
| Line Item | Amount |
|---|---|
| Total Expenses per Form 990 | $18,672,358 |
| Expenses per Audited Statements | $18,625,353 |
| Total Expenses per Audited Statements | $18,625,353 |
| Expenses Not Reported on Financial Statements | $47,005 |
| Line Item | Amount |
|---|---|
| Professional Fundraising Fees | $0 |
| Line Item | Beginning | End | Change |
|---|---|---|---|
| Receivables from Disqualified Persons | $77,412 | $44,906 | ▼ $32,506 |
| Liability | Amount |
|---|---|
| Lease Liability | $5,217,719 |
“The Executive Director reviews the Form 990 pior to signature and filing.”
“The Executive Directors salary is approved annually by the Maryland State Department of Education.”
“All documents required to be available for public inspection are provided upon written request to the Organization.”
“The School follows the Financial Accounting Standards Board Accounting Standards Codification (FASB ASC), which provides guidance on accounting for uncertainty in income taxes recognized in Schools financial statements. At fiscal year-end, The School had no unrecognized tax benefits related to uncertain tax positions in its tax return that would qualify for either recognition or disclosure in its financial statements.The Schools policy would be to recognize interest and penalties on tax positions related to its unrecognized tax benefits in income tax expense in the financial statements. Through the fiscal year-end, there have been no matters that would have resulted in an accrual for interest and/or penalties.”
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 | 761105 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 1077619 |
| IRS990/AccountsReceivableGrp/BOYAmt | 0 | 1461863 |
| IRS990/AccountsReceivableGrp/EOYAmt | 0 | 2716756 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | false |
| IRS990/ActivityOrMissionDesc | 0 | To keep the Harbour School a safe place where children with learning disabilities become successful learners. |
| IRS990/AdvertisingGrp/ManagementAndGeneralAmt | 0 | 60021 |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 60021 |
| IRS990/AllOtherContributionsAmt | 0 | 843751 |
| IRS990/AuditCommitteeInd | 0 | true |
| IRS990/BackupWthldComplianceInd | 0 | true |
| IRS990/BooksInCareOfDetail/PersonNm | 0 | Linda Jacobs |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 4109744248 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 1277 Green Holly Drive |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | Annapolis |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | MD |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 21409 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | false |
| IRS990/BusinessRlnWithFamMemInd | 0 | false |
| IRS990/BusinessRlnWithOrgMemInd | 0 | false |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 2593427 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 868750 |
| IRS990/ChangeToOrgDocumentsInd | 0 | false |
| IRS990/CollectionsOfArtInd | 0 | false |
| IRS990/CompCurrentOfcrDirectorsGrp/FundraisingAmt | 0 | 11093 |
| IRS990/CompCurrentOfcrDirectorsGrp/ManagementAndGeneralAmt | 0 | 30282 |
| IRS990/CompCurrentOfcrDirectorsGrp/ProgramServicesAmt | 0 | 180492 |
| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 221867 |
| IRS990/CompensationFromOtherSrcsInd | 0 | false |
| IRS990/CompensationProcessCEOInd | 0 | true |
| IRS990/CompensationProcessOtherInd | 0 | false |
| IRS990/ConferencesMeetingsGrp/FundraisingAmt | 0 | 50417 |
| IRS990/ConferencesMeetingsGrp/ProgramServicesAmt | 0 | 40385 |
| IRS990/ConferencesMeetingsGrp/TotalAmt | 0 | 90802 |
| IRS990/ConflictOfInterestPolicyInd | 0 | false |
| IRS990/ConservationEasementsInd | 0 | false |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | false |
| IRS990/CreditCounselingInd | 0 | false |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 843751 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/CYInvestmentIncomeAmt | 0 | 377030 |
| IRS990/CYOtherExpensesAmt | 0 | 3233269 |
| IRS990/CYOtherRevenueAmt | 0 | 8698 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 18260425 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | 817546 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 15439089 |
| IRS990/CYTotalExpensesAmt | 0 | 18672358 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 830794 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 19489904 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | false |
| IRS990/DeductibleArtContributionInd | 0 | false |
| IRS990/DeductibleNonCashContriInd | 0 | false |
| IRS990/DeferredRevenueGrp/BOYAmt | 0 | 352600 |
| IRS990/DeferredRevenueGrp/EOYAmt | 0 | 410694 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | false |
| IRS990/DepreciationDepletionGrp/ManagementAndGeneralAmt | 0 | 51441 |
| IRS990/DepreciationDepletionGrp/ProgramServicesAmt | 0 | 224403 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 275844 |
| IRS990/Desc | 0 | Innovative Learning, Inc. (the School) provides students with learning disabilities and multiple disabilities with education, social skills training, job training and college preparation. |
| IRS990/DescribedInSection501c3Ind | 0 | true |
| IRS990/DisregardedEntityInd | 0 | false |
| IRS990/DocumentRetentionPolicyInd | 0 | false |
| IRS990/DonorAdvisedFundInd | 0 | false |
| IRS990/DonorRestrictionNetAssetsGrp/BOYAmt | 0 | 54970 |
| IRS990/DonorRestrictionNetAssetsGrp/EOYAmt | 0 | 61950 |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | false |
| IRS990/ElectionOfBoardMembersInd | 0 | false |
| IRS990/EmployeeCnt | 0 | 234 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | true |
| IRS990/EngagedInExcessBenefitTransInd | 0 | false |
| IRS990/ExpenseAmt | 0 | 14965895 |
| IRS990/FamilyOrBusinessRlnInd | 0 | false |
| IRS990/FederalGrantAuditRequiredInd | 0 | false |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 48870 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 48870 |
| IRS990/FeesForServicesLegalGrp/ManagementAndGeneralAmt | 0 | 13599 |
| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 13599 |
| IRS990/FeesForServicesOtherGrp/ManagementAndGeneralAmt | 0 | 23532 |
| IRS990/FeesForServicesOtherGrp/ProgramServicesAmt | 0 | 25763 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 49295 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/ManagementAndGeneralAmt | 0 | 47005 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/TotalAmt | 0 | 47005 |
| IRS990/ForeignActivitiesInd | 0 | false |
| IRS990/ForeignFinancialAccountInd | 0 | false |
| IRS990/ForeignOfficeInd | 0 | false |
| IRS990/Form8282PropertyDisposedOfInd | 0 | false |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 0 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 1 | 0.00 |
| 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 | 50.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 50.00 |
| 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 | 10.00 |
| 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/IndividualTrusteeOrDirectorInd | 7 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 8 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 0 | 28114 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 1 | 23753 |
| 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 | Martha D Schneider |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | Linda Jacobs |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | Sandra Liotta |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | Kathleen Fitch |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | Robin Vaughn |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | Sen Shelly Hettleman |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | Jill Berie |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | Renee Catlin |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | Yvonne B Callaway |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 131070 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 1 | 90797 |
| 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 | 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/TitleTxt | 0 | Vice President |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | President and Executive Director |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | Board Member |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | Board Member |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | Board Member |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | Board Member |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | Board Member |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | Board Member |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | SecretaryTreasurer |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | true |
| IRS990/FormationYr | 0 | 1979 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | false |
| IRS990/FSAuditedBasisGrp/SeparateBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | true |
| IRS990/FundraisingActivitiesInd | 0 | false |
| IRS990/GainOrLossGrp/OtherAmt | 0 | -41345 |
| IRS990/GainOrLossGrp/SecuritiesAmt | 0 | -23483 |
| IRS990/GamingActivitiesInd | 0 | false |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 9 |
| IRS990/GrantsToIndividualsInd | 0 | false |
| IRS990/GrantsToOrganizationsInd | 0 | false |
| IRS990/GrantToRelatedPersonInd | 0 | false |
| IRS990/GrossAmountSalesAssetsGrp/OtherAmt | 0 | 80421 |
| IRS990/GrossAmountSalesAssetsGrp/SecuritiesAmt | 0 | 443000 |
| IRS990/GrossReceiptsAmt | 0 | 20078153 |
| IRS990/GroupReturnForAffiliatesInd | 0 | false |
| IRS990/IncludeFIN48FootnoteInd | 0 | true |
| IRS990/IndependentAuditFinclStmtInd | 0 | true |
| IRS990/IndependentVotingMemberCnt | 0 | 7 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 1 |
| IRS990/IndoorTanningServicesInd | 0 | false |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 441858 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 441858 |
| IRS990/InvestmentInJointVentureInd | 0 | false |
| IRS990/InvestmentsPubTradedSecGrp/BOYAmt | 0 | 9605837 |
| IRS990/InvestmentsPubTradedSecGrp/EOYAmt | 0 | 10495974 |
| IRS990/IRPDocumentCnt | 0 | 4 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 3022123 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 2643273 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 3805080 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 6827203 |
| IRS990/LegalDomicileStateCd | 0 | MD |
| IRS990/LessCostOthBasisSalesExpnssGrp/OtherAmt | 0 | 121766 |
| IRS990/LessCostOthBasisSalesExpnssGrp/SecuritiesAmt | 0 | 466483 |
| IRS990/LoanOutstandingInd | 0 | true |
| IRS990/LobbyingActivitiesInd | 0 | false |
| IRS990/LocalChaptersInd | 0 | false |
| IRS990/MaterialDiversionOrMisuseInd | 0 | false |
| IRS990/MembersOrStockholdersInd | 0 | false |
| IRS990/MethodOfAccountingAccrualInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | true |
| IRS990/MinutesOfGoverningBodyInd | 0 | true |
| IRS990/MissionDesc | 0 | To keep the Harbour School a safe place where children with learning disabilities become successful learners. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | false |
| IRS990/MoreThan5000KToOrgInd | 0 | false |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 15069728 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 16318031 |
| IRS990/NetGainOrLossInvestmentsGrp/ExclusionAmt | 0 | -64828 |
| IRS990/NetGainOrLossInvestmentsGrp/TotalRevenueColumnAmt | 0 | -64828 |
| IRS990/NetIncmFromFundraisingEvtGrp/TotalRevenueColumnAmt | 0 | 0 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
| IRS990/NetUnrlzdGainsLossesInvstAmt | 0 | 430757 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 15014758 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 16256081 |
| IRS990/NondeductibleContributionsInd | 0 | false |
| IRS990/OccupancyGrp/ManagementAndGeneralAmt | 0 | 355582 |
| IRS990/OccupancyGrp/ProgramServicesAmt | 0 | 1551155 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 1906737 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 98769 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 494322 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 593091 |
| IRS990/OfficerMailingAddressInd | 0 | false |
| IRS990/OperateHospitalInd | 0 | false |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherAssetsTotalGrp/BOYAmt | 0 | 6193594 |
| IRS990/OtherAssetsTotalGrp/EOYAmt | 0 | 4941633 |
| IRS990/OtherChangesInNetAssetsAmt | 0 | 0 |
| IRS990/OtherEmployeeBenefitsGrp/FundraisingAmt | 0 | 112037 |
| IRS990/OtherEmployeeBenefitsGrp/ManagementAndGeneralAmt | 0 | 305831 |
| IRS990/OtherEmployeeBenefitsGrp/ProgramServicesAmt | 0 | 1822868 |
| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 2240736 |
| IRS990/OtherExpensesGrp/Desc | 0 | Dues and Subscriptions |
| IRS990/OtherExpensesGrp/Desc | 1 | Other |
| IRS990/OtherExpensesGrp/FundraisingAmt | 0 | 8423 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 24033 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 1 | 45581 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 24033 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 54004 |
| IRS990/OtherLiabilitiesGrp/BOYAmt | 0 | 6548800 |
| IRS990/OtherLiabilitiesGrp/EOYAmt | 0 | 5217719 |
| IRS990/OtherRevenueMiscGrp/BusinessCd | 0 | 900099 |
| IRS990/OtherRevenueMiscGrp/Desc | 0 | Other |
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| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 0 | 8698 |
| IRS990/OtherRevenueTotalAmt | 0 | 8698 |
| IRS990/OtherSalariesAndWagesGrp/FundraisingAmt | 0 | 571677 |
| IRS990/OtherSalariesAndWagesGrp/ManagementAndGeneralAmt | 0 | 1560532 |
| IRS990/OtherSalariesAndWagesGrp/ProgramServicesAmt | 0 | 9301343 |
| IRS990/OtherSalariesAndWagesGrp/TotalAmt | 0 | 11433552 |
| IRS990/PartialLiquidationInd | 0 | false |
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| IRS990/PayrollTaxesGrp/ManagementAndGeneralAmt | 0 | 127755 |
| IRS990/PayrollTaxesGrp/ProgramServicesAmt | 0 | 761468 |
| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 936025 |
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| IRS990/PensionPlanContributionsGrp/ManagementAndGeneralAmt | 0 | 82836 |
| IRS990/PensionPlanContributionsGrp/ProgramServicesAmt | 0 | 493728 |
| IRS990/PensionPlanContributionsGrp/TotalAmt | 0 | 606909 |
| IRS990/PoliticalCampaignActyInd | 0 | false |
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| IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt | 0 | 150964 |
| IRS990/PrincipalOfficerNm | 0 | Linda Jacobs |
| IRS990/ProfessionalFundraisingInd | 0 | false |
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| IRS990/ProgramServiceRevenueGrp/Desc | 0 | Tuition |
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| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 1 | 147194 |
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| IRS990/PYExcessBenefitTransInd | 0 | false |
| IRS990/PYInvestmentIncomeAmt | 0 | 326004 |
| IRS990/PYOtherExpensesAmt | 0 | 3226004 |
| IRS990/PYOtherRevenueAmt | 0 | 9931 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 17655972 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | 1034533 |
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| IRS990/PYTotalExpensesAmt | 0 | 17592373 |
| IRS990/PYTotalRevenueAmt | 0 | 18626906 |
| IRS990/QuidProQuoContributionsInd | 0 | false |
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| IRS990/RcvFndsToPayPrsnlBnftCntrctInd | 0 | false |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | 817546 |
| IRS990/RelatedEntityInd | 0 | true |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | true |
| IRS990/ReportInvestmentsOtherSecInd | 0 | false |
| IRS990/ReportLandBuildingEquipmentInd | 0 | true |
| IRS990/ReportOtherAssetsInd | 0 | true |
| IRS990/ReportOtherLiabilitiesInd | 0 | true |
| IRS990/ReportProgramRelatedInvstInd | 0 | false |
| IRS990/RevenueAmt | 0 | 18260425 |
| 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 | true |
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| IRS990ScheduleD/ExpensesNotRptFinclStmtAmt | 0 | 47005 |
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| IRS990ScheduleD/FootnoteTextInd | 0 | X |
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| IRS990ScheduleD/LeaseholdImprovementsGrp/OtherCostOrOtherBasisAmt | 0 | 4254130 |
| IRS990ScheduleD/NetUnrealizedGainsInvstAmt | 0 | 430757 |
| IRS990ScheduleD/OtherAssetsOrgGrp/BookValueAmt | 0 | 12500 |
| IRS990ScheduleD/OtherAssetsOrgGrp/BookValueAmt | 1 | 4174313 |
| IRS990ScheduleD/OtherAssetsOrgGrp/BookValueAmt | 2 | 754820 |
| IRS990ScheduleD/OtherAssetsOrgGrp/Desc | 0 | Deposits |
| IRS990ScheduleD/OtherAssetsOrgGrp/Desc | 1 | Right of Use Asset |
| IRS990ScheduleD/OtherAssetsOrgGrp/Desc | 2 | Due from Affiliates |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Amt | 0 | 5217719 |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Desc | 0 | Lease Liability |
| IRS990ScheduleD/RevenueNotReportedAmt | 0 | 430757 |
| IRS990ScheduleD/RevenueNotReportedFinclStmtAmt | 0 | 47005 |
| IRS990ScheduleD/RevenueSubtotalAmt | 0 | 19442899 |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 0 | The School follows the Financial Accounting Standards Board Accounting Standards Codification (FASB ASC), which provides guidance on accounting for uncertainty in income taxes recognized in Schools financial statements. At fiscal year-end, The School had no unrecognized tax benefits related to uncertain tax positions in its tax return that would qualify for either recognition or disclosure in its financial statements.The Schools policy would be to recognize interest and penalties on tax positions related to its unrecognized tax benefits in income tax expense in the financial statements. Through the fiscal year-end, there have been no matters that would have resulted in an accrual for interest and/or penalties. |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | Part X, Line 2-Text in footnote regarding FIN 48 (ASC 740) |
| IRS990ScheduleD/TotalBookValueLandBuildingsAmt | 0 | 3805080 |
| IRS990ScheduleD/TotalBookValueOtherAssetsAmt | 0 | 4941633 |
| IRS990ScheduleD/TotalExpensesPerForm990Amt | 0 | 18672358 |
| IRS990ScheduleD/TotalLiabilityAmt | 0 | 5217719 |
| IRS990ScheduleD/TotalRevenuePerForm990Amt | 0 | 19489904 |
| IRS990ScheduleD/TotalRevEtcAuditedFinclStmtAmt | 0 | 19873656 |
| IRS990ScheduleD/TotExpnsEtcAuditedFinclStmtAmt | 0 | 18625353 |
| IRS990ScheduleE/ComplianceWithRevProc7550Ind | 0 | true |
| IRS990ScheduleE/DiscriminateRaceAdmissPlcyInd | 0 | false |
| IRS990ScheduleE/DiscriminateRaceAthltProgInd | 0 | false |
| IRS990ScheduleE/DiscriminateRaceEducPlcyInd | 0 | false |
| IRS990ScheduleE/DiscriminateRaceEmplmFcultyInd | 0 | false |
| IRS990ScheduleE/DiscriminateRaceOtherActyInd | 0 | false |
| IRS990ScheduleE/DiscriminateRaceSchsInd | 0 | false |
| IRS990ScheduleE/DiscriminateRaceStdntsRghtsInd | 0 | false |
| IRS990ScheduleE/DiscriminateRaceUseOfFcltsInd | 0 | false |
| IRS990ScheduleE/GovernmentFinancialAidRcvdInd | 0 | false |
| IRS990ScheduleE/GovernmentFinancialAidRvkdInd | 0 | false |
| IRS990ScheduleE/MaintainCpyOfAllSolInd | 0 | true |
| IRS990ScheduleE/MaintainCpyOfBrochuresEtcInd | 0 | true |
| IRS990ScheduleE/MaintainRacialCompRecsInd | 0 | true |
| IRS990ScheduleE/MaintainScholarshipsRecsInd | 0 | true |
| IRS990ScheduleE/NondiscriminatoryPolicyStmtInd | 0 | true |
| IRS990ScheduleE/PlcyPblczdViaBroadcastMediaInd | 0 | true |
| IRS990ScheduleE/PolicyStmtInBrochuresEtcInd | 0 | true |
| IRS990ScheduleJ/AnyNonFixedPaymentsInd | 0 | false |
| IRS990ScheduleJ/CompBasedOnRevenueOfFlngOrgInd | 0 | false |
| IRS990ScheduleJ/CompBsdNetEarnsFlngOrgInd | 0 | false |
| IRS990ScheduleJ/CompBsdNetEarnsRltdOrgsInd | 0 | false |
| IRS990ScheduleJ/CompBsdOnRevRelatedOrgsInd | 0 | false |
| IRS990ScheduleJ/EquityBasedCompArrngmInd | 0 | false |
| IRS990ScheduleJ/InitialContractExceptionInd | 0 | false |
| IRS990/ScheduleJRequiredInd | 0 | true |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BaseCompensationFilingOrgAmt | 0 | 131070 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/DeferredCompensationFlngOrgAmt | 0 | 15459 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsFilingOrgAmt | 0 | 12655 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/PersonNm | 0 | Martha D Schneider |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TitleTxt | 0 | Vice President |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TotalCompensationFilingOrgAmt | 0 | 159184 |
| IRS990ScheduleJ/SeverancePaymentInd | 0 | false |
| IRS990ScheduleJ/SupplementalNonqualRtrPlanInd | 0 | false |
| IRS990ScheduleL/LoansBtwnOrgInterestedPrsnGrp/BalanceDueAmt | 0 | 44906 |
| IRS990ScheduleL/LoansBtwnOrgInterestedPrsnGrp/BoardOrCommitteeApprovalInd | 0 | true |
| IRS990ScheduleL/LoansBtwnOrgInterestedPrsnGrp/DefaultInd | 0 | false |
| IRS990ScheduleL/LoansBtwnOrgInterestedPrsnGrp/LoanFromOrganizationInd | 0 | X |
| IRS990ScheduleL/LoansBtwnOrgInterestedPrsnGrp/LoanPurposeTxt | 0 | Other |
| IRS990ScheduleL/LoansBtwnOrgInterestedPrsnGrp/OriginalPrincipalAmt | 0 | 85196 |
| IRS990ScheduleL/LoansBtwnOrgInterestedPrsnGrp/PersonNm | 0 | Various |
| IRS990ScheduleL/LoansBtwnOrgInterestedPrsnGrp/RelationshipWithOrgTxt | 0 | Employees |
| IRS990ScheduleL/LoansBtwnOrgInterestedPrsnGrp/WrittenAgreementInd | 0 | false |
| IRS990ScheduleL/TotalBalanceDueAmt | 0 | 44906 |
| IRS990/ScheduleORequiredInd | 0 | true |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 0 | The Executive Director reviews the Form 990 pior to signature and filing. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 1 | The Executive Directors salary is approved annually by the Maryland State Department of Education. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 2 | All documents required to be available for public inspection are provided upon written request to the Organization. |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | Form 990 governing body review Part VI line 11 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | CEO executive director top management comp Part VI line 15a |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 2 | Governing documents etc available to public Part VI line 19 |
| IRS990ScheduleR/AssetExchangeInd | 0 | false |
| IRS990ScheduleR/AssetPurchaseFromOtherOrgInd | 0 | false |
| IRS990ScheduleR/AssetSaleToOtherOrgInd | 0 | false |
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