Liabilities / Assets
20th percentile
Higher debt load relative to assets than 20% of similar nonprofits.
EIN 81-5374114 • 501(c)3 • North Haven, CT
Profile
The slate school, inc. Is designed to cultivate student creativity, foster ingenuity, and inspire a deep passion for lifelong learning and discovery. The organizations mission and priority is that each child's innate and natural love for learning be nurtured and enabled to grow and flourish.
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
20th percentile
Higher debt load relative to assets than 20% of similar nonprofits.
Liabilities / Revenue
24th percentile
Higher debt load relative to revenue than 24% of similar nonprofits.
Net Margin
97th percentile
Higher net margin than 97% of similar nonprofits.
Top Officer Pay
22nd percentile
Higher top officer pay than 22% of similar nonprofits.
Top officer pay equals 1.4% of source-year revenue.
Asset Growth
90th percentile
Faster asset growth than 90% of similar nonprofits.
Revenue Growth
22nd percentile
Faster revenue growth than 22% of similar nonprofits.
Assets
Up$38,225,402
Up $8,710,824 (+30%) from 2023
Liabilities
Down$1,031,776
Down $427,991 (-29%) from 2023
Net Assets
Up$37,193,626
Up $9,138,815 (+33%) from 2023
Revenue
Down$10,953,370
Down $690,397 (-5.9%) from 2023
Expenses
Up$1,814,555
Up $376,826 (+26%) from 2023
Net Income
Down$9,138,815
Down $1,067,223 (-10%) from 2023
Most recent year
2024 • Form 990Detailed filing. Detailed filing data is available for this year.
The slate school, inc. Is designed to cultivate student creativity, foster ingenuity, and inspire a deep passion for lifelong learning and discovery. The organizations mission and priority is that each child's innate and natural love for learning be nurtures and enables to grow and flourish.
At slate school, inc., education is focused on cultivating creativity, fostering ingenuity, and inspiring a deep passion for lifelong learning. The organization is committed to changing the landscape of education to inspire and nurture children as creative thinkers and curious learners.
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Land, Buildings, and Equipment, Net | $20,254,166 | $35,392,294 | ▲ $15,138,128 |
| Cash and Non-Interest-Bearing Accounts | $9,259,052 | $2,831,613 | ▼ $6,427,439 |
| Prepaid Expenses and Deferred Charges | $1,360 | $1,495 | ▲ $135 |
| Total Assets | $29,514,578 | $38,225,402 | ▲ $8,710,824 |
| Liabilities | |||
| Accounts Payable and Accrued Expenses | $1,409,817 | $971,436 | ▼ $438,381 |
| Deferred Revenue | $49,950 | $60,340 | ▲ $10,390 |
| Total Liabilities | $1,459,767 | $1,031,776 | ▼ $427,991 |
| Net Assets / Fund Balance | |||
| Net Assets Without Donor Restrictions | $28,054,811 | $37,193,626 | ▲ $9,138,815 |
| Total Net Assets Fund Balance | $28,054,811 | $37,193,626 | ▲ $9,138,815 |
| Total Liabilities and Net Assets / Fund Balance | $29,514,578 | $38,225,402 | ▲ $8,710,824 |
| Asset | Book Value | Depreciation | Basis |
|---|---|---|---|
| Other Land Buildings | $19,117,339 | - | $19,117,339 |
| Buildings | $10,170,563 | $1,690,517 | $11,861,080 |
| Land | $6,067,471 | - | $6,067,471 |
| Equipment | $36,921 | $114,495 | $151,416 |
| Name | Title | Full / Part Time | Base | Other | Total |
|---|---|---|---|---|---|
| Julie Mountcastle | Head of School | FT | $151,032 | $5,077 | $156,109 |
| Name | Title |
|---|---|
| Jennifer Staple-clark | President |
| Paul Ellingstad | Director |
| Wendy Ostroff | Director |
| Alexander Clark | Treasurer/secretary |
| Contractor | Services | Location | Compensation |
|---|---|---|---|
| Gilbane Building Company | Construction Of Slate "upper" | 7 JACKSON WAY, Providence, RI 02903 | $5,793,556 |
| Patriquin Architects | Architect Services For Construction Of S | 2 GRAND AVENUE, New Haven, CT 06513 | $569,164 |
| Line Item | Amount |
|---|---|
| Other Expenses | $985,637 |
| Salaries, Compensation, and Employee Benefits | $828,918 |
| Grants and Similar Amounts Paid | $0 |
| Professional Fundraising Fees | $0 |
| Total Fundraising Expense | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Other Salaries and Wages | $605,885 | - | - | $605,885 |
| Depreciation Depletion | $330,850 | - | - | $330,850 |
| Insurance | $99,590 | $66,990 | - | $166,580 |
| Current Officers, Directors, Trustees, and Key Employees | $151,032 | - | - | $151,032 |
| Payroll Taxes | $56,255 | - | - | $56,255 |
| Fees for Services Other | $37,520 | $965 | - | $38,485 |
| Other Expenses | $27,657 | - | - | $27,657 |
| Office Expenses | - | $18,099 | - | $18,099 |
| Pension Plan Contributions | $15,746 | - | - | $15,746 |
| Fees for Services Accounting | - | $8,225 | - | $8,225 |
| Advertising | - | $5,496 | - | $5,496 |
| Fees for Services Legal | - | $2,287 | - | $2,287 |
| Total Functional Expenses | $1,712,493 | $102,062 | $0 | $1,814,555 |
| Line Item | Amount |
|---|---|
| Total Expenses per Audited Statements | $1,837,955 |
| Expenses per Audited Statements | $1,814,555 |
| Total Expenses per Form 990 | $1,814,555 |
| Expenses Not Reported on Form 990 | $23,400 |
| Expenses Not Reported on Financial Statements | $0 |
| Line Item | Amount |
|---|---|
| Fundraising Gross Income | $2,462 |
| Fundraising Direct Expenses | $0 |
| Professional Fundraising Fees | $0 |
“Two board members are married (alexander clark and jennifer staple clark)”
“The board of directors was initially created by the organizations founders.”
“A draft copy of the 990 is distributed to the board for review prior to filing.”
“The organization requires officers, directors and key employees to review its conflict of interest policy and sign off that there are no conflicts they are aware of.”
“The organizations top management official, the president, elects not to receive any compensation.”
“The organization makes these documents available to the public upon request.”
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 | 0 |
| IRS990/AccountsPayableAccrExpnssGrp/BOYAmt | 0 | 1409817 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 971436 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | 0 |
| IRS990/ActivityOrMissionDesc | 0 | AT SLATE SCHOOL, INC., EDUCATION IS FOCUSED ON CULTIVATING CREATIVITY, FOSTERING INGENUITY, AND INSPIRING A DEEP PASSION FOR LIFELONG LEARNING. THE ORGANIZATION IS COMMITTED TO CHANGING THE LANDSCAPE OF EDUCATION TO INSPIRE AND NURTURE CHILDREN AS CREATIVE THINKERS AND CURIOUS LEARNERS. |
| IRS990/AdvertisingGrp/ManagementAndGeneralAmt | 0 | 5496 |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 5496 |
| IRS990/AllOtherContributionsAmt | 0 | 10125709 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | 1 |
| IRS990/AuditCommitteeInd | 0 | 1 |
| IRS990/BooksInCareOfDetail/BusinessName/BusinessNameLine1Txt | 0 | MARYANN ROSE |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 2034044900 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 124 MANSFIELD ROAD |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | NORTH HAVEN |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | CT |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 06473 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | 0 |
| IRS990/BusinessRlnWithFamMemInd | 0 | 0 |
| IRS990/BusinessRlnWithOrgMemInd | 0 | 0 |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 9259052 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 2831613 |
| IRS990/ChangeToOrgDocumentsInd | 0 | 0 |
| IRS990/CntrctRcvdGreaterThan100KCnt | 0 | 2 |
| IRS990/CollectionsOfArtInd | 0 | 0 |
| IRS990/CompCurrentOfcrDirectorsGrp/ProgramServicesAmt | 0 | 151032 |
| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 151032 |
| 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 | 5793556 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 1 | 569164 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 0 | 7 JACKSON WAY |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 1 | 2 GRAND AVENUE |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 0 | PROVIDENCE |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 1 | NEW HAVEN |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 0 | RI |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 1 | CT |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 0 | 02903 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 1 | 06513 |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 0 | GILBANE BUILDING COMPANY |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 1 | PATRIQUIN ARCHITECTS |
| IRS990/ContractorCompensationGrp/ServicesDesc | 0 | CONSTRUCTION OF SLATE "UPPER" |
| IRS990/ContractorCompensationGrp/ServicesDesc | 1 | ARCHITECT SERVICES FOR CONSTRUCTION OF S |
| IRS990/CreditCounselingInd | 0 | 0 |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 10125709 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/CYInvestmentIncomeAmt | 0 | 0 |
| IRS990/CYOtherExpensesAmt | 0 | 985637 |
| IRS990/CYOtherRevenueAmt | 0 | 3494 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 824167 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | 9138815 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 828918 |
| IRS990/CYTotalExpensesAmt | 0 | 1814555 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 0 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 10953370 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | 0 |
| IRS990/DeductibleArtContributionInd | 0 | 0 |
| IRS990/DeductibleNonCashContriInd | 0 | 0 |
| IRS990/DeferredRevenueGrp/BOYAmt | 0 | 49950 |
| IRS990/DeferredRevenueGrp/EOYAmt | 0 | 60340 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | 0 |
| IRS990/DepreciationDepletionGrp/ProgramServicesAmt | 0 | 330850 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 330850 |
| IRS990/Desc | 0 | K-12 ELEMENTARY SCHOOL |
| IRS990/DescribedInSection501c3Ind | 0 | 1 |
| IRS990/DisregardedEntityInd | 0 | 0 |
| IRS990/DocumentRetentionPolicyInd | 0 | 1 |
| IRS990/DonorAdvisedFundInd | 0 | 0 |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | 0 |
| IRS990/ElectionOfBoardMembersInd | 0 | 1 |
| IRS990/EmployeeCnt | 0 | 13 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | 1 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | 0 |
| IRS990/ExpenseAmt | 0 | 1712493 |
| IRS990/FamilyOrBusinessRlnInd | 0 | 1 |
| IRS990/FederalGrantAuditRequiredInd | 0 | 0 |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 8225 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 8225 |
| IRS990/FeesForServicesLegalGrp/ManagementAndGeneralAmt | 0 | 2287 |
| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 2287 |
| IRS990/FeesForServicesOtherGrp/ManagementAndGeneralAmt | 0 | 965 |
| IRS990/FeesForServicesOtherGrp/ProgramServicesAmt | 0 | 37520 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 38485 |
| IRS990/ForeignActivitiesInd | 0 | 0 |
| IRS990/ForeignFinancialAccountInd | 0 | 0 |
| IRS990/ForeignOfficeInd | 0 | 0 |
| IRS990/Form8282PropertyDisposedOfInd | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 50.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 60.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 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/OfficerInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 3 | 5077 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | ALEXANDER CLARK |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | JENNIFER STAPLE-CLARK |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | PAUL ELLINGSTAD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | JULIE MOUNTCASTLE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | WENDY OSTROFF |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 3 | 151032 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 4 | 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/TitleTxt | 0 | TREASURER/SECRETARY |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | HEAD OF SCHOOL |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | DIRECTOR |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | 1 |
| IRS990/FormationYr | 0 | 2017 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | 0 |
| IRS990/FSAuditedBasisGrp/SeparateBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | 1 |
| IRS990/FundraisingActivitiesInd | 0 | 0 |
| IRS990/FundraisingDirectExpensesAmt | 0 | 0 |
| IRS990/FundraisingGrossIncomeAmt | 0 | 2462 |
| IRS990/GamingActivitiesInd | 0 | 0 |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 5 |
| IRS990/GrantsToIndividualsInd | 0 | 0 |
| IRS990/GrantsToOrganizationsInd | 0 | 0 |
| IRS990/GrantToRelatedPersonInd | 0 | 0 |
| IRS990/GrossReceiptsAmt | 0 | 10953370 |
| IRS990/GroupReturnForAffiliatesInd | 0 | 0 |
| IRS990/IncludeFIN48FootnoteInd | 0 | 0 |
| IRS990/IndependentAuditFinclStmtInd | 0 | 1 |
| IRS990/IndependentVotingMemberCnt | 0 | 3 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 1 |
| IRS990/IndoorTanningServicesInd | 0 | 0 |
| IRS990/InfoInScheduleOPartIIIInd | 0 | X |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 66990 |
| IRS990/InsuranceGrp/ProgramServicesAmt | 0 | 99590 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 166580 |
| IRS990/InvestmentInJointVentureInd | 0 | 0 |
| IRS990/IRPDocumentCnt | 0 | 14 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 1805012 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 20254166 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 35392294 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 37197306 |
| IRS990/LegalDomicileStateCd | 0 | CT |
| 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 | THE SLATE SCHOOL, INC. IS DESIGNED TO CULTIVATE STUDENT CREATIVITY, FOSTER INGENUITY, AND INSPIRE A DEEP PASSION FOR LIFELONG LEARNING AND DISCOVERY. THE ORGANIZATIONS MISSION AND PRIORITY IS THAT EACH CHILD'S INNATE AND NATURAL LOVE FOR LEARNING BE NURTURED AND ENABLED TO GROW AND FLOURISH. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | 0 |
| IRS990/MoreThan5000KToOrgInd | 0 | 0 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 28054811 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 37193626 |
| IRS990/NetIncmFromFundraisingEvtGrp/ExclusionAmt | 0 | 2462 |
| IRS990/NetIncmFromFundraisingEvtGrp/TotalRevenueColumnAmt | 0 | 2462 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 28054811 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 37193626 |
| IRS990/NondeductibleContributionsInd | 0 | 0 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 18099 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 18099 |
| IRS990/OfficerMailingAddressInd | 0 | 0 |
| IRS990/OperateHospitalInd | 0 | 0 |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherChangesInNetAssetsAmt | 0 | 0 |
| IRS990/OtherExpensesGrp/Desc | 0 | FACILITIES AND EQUIPMEN |
| IRS990/OtherExpensesGrp/Desc | 1 | REAL ESTATE TAXES |
| IRS990/OtherExpensesGrp/Desc | 2 | UTILITIES |
| IRS990/OtherExpensesGrp/Desc | 3 | SCHOOL SUPPLIES |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 168835 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 136140 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 2 | 82983 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 3 | 27657 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 168835 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 136140 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 82983 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 27657 |
| IRS990/OtherRevenueMiscGrp/BusinessCd | 0 | 900099 |
| IRS990/OtherRevenueMiscGrp/Desc | 0 | MISCELLANEOUS REVENUE |
| IRS990/OtherRevenueMiscGrp/RelatedOrExemptFuncIncomeAmt | 0 | 1032 |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 0 | 1032 |
| IRS990/OtherRevenueTotalAmt | 0 | 1032 |
| IRS990/OtherSalariesAndWagesGrp/ProgramServicesAmt | 0 | 605885 |
| IRS990/OtherSalariesAndWagesGrp/TotalAmt | 0 | 605885 |
| IRS990/PartialLiquidationInd | 0 | 0 |
| IRS990/PayrollTaxesGrp/ProgramServicesAmt | 0 | 56255 |
| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 56255 |
| IRS990/PensionPlanContributionsGrp/ProgramServicesAmt | 0 | 15746 |
| IRS990/PensionPlanContributionsGrp/TotalAmt | 0 | 15746 |
| IRS990/PoliticalCampaignActyInd | 0 | 0 |
| IRS990/PrepaidExpensesDefrdChargesGrp/BOYAmt | 0 | 1360 |
| IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt | 0 | 1495 |
| IRS990/PrincipalOfficerNm | 0 | JENNIFER STAPLE CLARK |
| IRS990/ProfessionalFundraisingInd | 0 | 0 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 0 | 611110 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 1 | 611110 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 2 | 611110 |
| IRS990/ProgramServiceRevenueGrp/Desc | 0 | TUITION |
| IRS990/ProgramServiceRevenueGrp/Desc | 1 | PROGRAM INCOME |
| IRS990/ProgramServiceRevenueGrp/Desc | 2 | APPLICATION FEES |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 790239 |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 1 | 31034 |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 2 | 2894 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 0 | 790239 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 1 | 31034 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 2 | 2894 |
| IRS990/ProgSrvcAccomActy2Grp/Desc | 0 | UPPER SCHOOL DEVELOPMENT AND CONSTRUCTION. DURING THE FISCAL YEAR $15,468,978 OF COSTS RELATING TO SLATE UPPER SCHOOL WERE EXPENDED AND CAPITALIZED AS CONSTRUCTION IN PROCESS. |
| IRS990/ProhibitedTaxShelterTransInd | 0 | 0 |
| IRS990/PYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/PYContributionsGrantsAmt | 0 | 11003340 |
| IRS990/PYExcessBenefitTransInd | 0 | 0 |
| IRS990/PYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/PYInvestmentIncomeAmt | 0 | 0 |
| IRS990/PYOtherExpensesAmt | 0 | 680144 |
| IRS990/PYOtherRevenueAmt | 0 | 20752 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 619675 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | 10206038 |
| IRS990/PYSalariesCompEmpBnftPaidAmt | 0 | 757585 |
| IRS990/PYTotalExpensesAmt | 0 | 1437729 |
| IRS990/PYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/PYTotalRevenueAmt | 0 | 11643767 |
| IRS990/QuidProQuoContributionsInd | 0 | 0 |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | 9138815 |
| IRS990/RegularMonitoringEnfrcInd | 0 | 1 |
| IRS990/RelatedEntityInd | 0 | 0 |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | 0 |
| IRS990/ReportInvestmentsOtherSecInd | 0 | 0 |
| IRS990/ReportLandBuildingEquipmentInd | 0 | 1 |
| IRS990/ReportOtherAssetsInd | 0 | 0 |
| IRS990/ReportOtherLiabilitiesInd | 0 | 0 |
| IRS990/ReportProgramRelatedInvstInd | 0 | 0 |
| IRS990ScheduleA/SchoolInd | 0 | X |
| IRS990ScheduleB/ContributorInformationGrp/ContributorBusinessName/BusinessNameLine1 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorNum | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine1 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine2 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/City | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/State | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/ZIPCode | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/TotalContributionsAmt | 0 | RESTRICTED |
| IRS990/ScheduleBRequiredInd | 0 | 1 |
| IRS990ScheduleD/BuildingsGrp/BookValueAmt | 0 | 10170563 |
| IRS990ScheduleD/BuildingsGrp/DepreciationAmt | 0 | 1690517 |
| IRS990ScheduleD/BuildingsGrp/OtherCostOrOtherBasisAmt | 0 | 11861080 |
| IRS990ScheduleD/DonatedServicesAndUseFcltsAmt | 0 | 23400 |
| IRS990ScheduleD/DonatedServicesUseFcltsAmt | 0 | 23400 |
| IRS990ScheduleD/EquipmentGrp/BookValueAmt | 0 | 36921 |
| IRS990ScheduleD/EquipmentGrp/DepreciationAmt | 0 | 114495 |
| IRS990ScheduleD/EquipmentGrp/OtherCostOrOtherBasisAmt | 0 | 151416 |
| IRS990ScheduleD/ExpensesNotReportedAmt | 0 | 23400 |
| IRS990ScheduleD/ExpensesNotRptFinclStmtAmt | 0 | 0 |
| IRS990ScheduleD/ExpensesSubtotalAmt | 0 | 1814555 |
| IRS990ScheduleD/LandGrp/BookValueAmt | 0 | 6067471 |
| IRS990ScheduleD/LandGrp/OtherCostOrOtherBasisAmt | 0 | 6067471 |
| IRS990ScheduleD/OtherLandBuildingsGrp/BookValueAmt | 0 | 19117339 |
| IRS990ScheduleD/OtherLandBuildingsGrp/OtherCostOrOtherBasisAmt | 0 | 19117339 |
| IRS990ScheduleD/RevenueNotReportedAmt | 0 | 23400 |
| IRS990ScheduleD/RevenueNotReportedFinclStmtAmt | 0 | 0 |
| IRS990ScheduleD/RevenueSubtotalAmt | 0 | 10953370 |
| IRS990ScheduleD/TotalBookValueLandBuildingsAmt | 0 | 35392294 |
| IRS990ScheduleD/TotalExpensesPerForm990Amt | 0 | 1814555 |
| IRS990ScheduleD/TotalRevenuePerForm990Amt | 0 | 10953370 |
| IRS990ScheduleD/TotalRevEtcAuditedFinclStmtAmt | 0 | 10976770 |
| IRS990ScheduleD/TotExpnsEtcAuditedFinclStmtAmt | 0 | 1837955 |
| IRS990ScheduleE/ComplianceWithRevProc7550Ind | 0 | 1 |
| IRS990ScheduleE/DiscriminateRaceAdmissPlcyInd | 0 | 0 |
| IRS990ScheduleE/DiscriminateRaceAthltProgInd | 0 | 0 |
| IRS990ScheduleE/DiscriminateRaceEducPlcyInd | 0 | 0 |
| IRS990ScheduleE/DiscriminateRaceEmplmFcultyInd | 0 | 0 |
| IRS990ScheduleE/DiscriminateRaceOtherActyInd | 0 | 0 |
| IRS990ScheduleE/DiscriminateRaceSchsInd | 0 | 0 |
| IRS990ScheduleE/DiscriminateRaceStdntsRghtsInd | 0 | 0 |
| IRS990ScheduleE/DiscriminateRaceUseOfFcltsInd | 0 | 0 |
| IRS990ScheduleE/GovernmentFinancialAidRcvdInd | 0 | 0 |
| IRS990ScheduleE/GovernmentFinancialAidRvkdInd | 0 | 0 |
| IRS990ScheduleE/MaintainCpyOfAllSolInd | 0 | 1 |
| IRS990ScheduleE/MaintainCpyOfBrochuresEtcInd | 0 | 1 |
| IRS990ScheduleE/MaintainRacialCompRecsInd | 0 | 1 |
| IRS990ScheduleE/MaintainScholarshipsRecsInd | 0 | 1 |
| IRS990ScheduleE/NondiscriminatoryPolicyStmtInd | 0 | 1 |
| IRS990ScheduleE/PlcyPblczdViaBroadcastMediaInd | 0 | 1 |
| IRS990ScheduleE/PolicyStmtInBrochuresEtcInd | 0 | 1 |
| IRS990ScheduleJ/AnyNonFixedPaymentsInd | 0 | 0 |
| IRS990ScheduleJ/CompBasedOnRevenueOfFlngOrgInd | 0 | 0 |
| IRS990ScheduleJ/CompBsdNetEarnsFlngOrgInd | 0 | 0 |
| IRS990ScheduleJ/CompBsdNetEarnsRltdOrgsInd | 0 | 0 |
| IRS990ScheduleJ/CompBsdOnRevRelatedOrgsInd | 0 | 0 |
| IRS990ScheduleJ/EquityBasedCompArrngmInd | 0 | 0 |
| IRS990ScheduleJ/InitialContractExceptionInd | 0 | 0 |
| IRS990/ScheduleJRequiredInd | 0 | 1 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BaseCompensationFilingOrgAmt | 0 | 151032 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BonusFilingOrganizationAmount | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BonusRelatedOrganizationsAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/CompensationBasedOnRltdOrgsAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/CompReportPrior990FilingOrgAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/CompReportPrior990RltdOrgsAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/DeferredCompensationFlngOrgAmt | 0 | 5077 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/DeferredCompRltdOrgsAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsFilingOrgAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsRltdOrgsAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/OtherCompensationFilingOrgAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/OtherCompensationRltdOrgsAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/PersonNm | 0 | JULIE MOUNTCASTLE |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TitleTxt | 0 | HEAD OF SCHOOL |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TotalCompensationFilingOrgAmt | 0 | 156109 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TotalCompensationRltdOrgsAmt | 0 | 0 |
| IRS990ScheduleJ/SeverancePaymentInd | 0 | 0 |
| IRS990ScheduleJ/SupplementalNonqualRtrPlanInd | 0 | 0 |
| IRS990/ScheduleORequiredInd | 0 | 1 |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 0 | TWO BOARD MEMBERS ARE MARRIED (ALEXANDER CLARK AND JENNIFER STAPLE CLARK) |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 1 | THE BOARD OF DIRECTORS WAS INITIALLY CREATED BY THE ORGANIZATIONS FOUNDERS. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 2 | A DRAFT COPY OF THE 990 IS DISTRIBUTED TO THE BOARD FOR REVIEW PRIOR TO FILING. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 3 | THE ORGANIZATION REQUIRES OFFICERS, DIRECTORS AND KEY EMPLOYEES TO REVIEW ITS CONFLICT OF INTEREST POLICY AND SIGN OFF THAT THERE ARE NO CONFLICTS THEY ARE AWARE OF. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 4 | THE ORGANIZATIONS TOP MANAGEMENT OFFICIAL, THE PRESIDENT, ELECTS NOT TO RECEIVE ANY COMPENSATION. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 5 | THE ORGANIZATION MAKES THESE DOCUMENTS AVAILABLE TO THE PUBLIC UPON REQUEST. |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | FORM 990, PART VI, SECTION A, LINE 2 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | FORM 990, PART VI, SECTION A, LINE 7A |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 2 | FORM 990, PART VI, SECTION B, LINE 11B |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 3 | FORM 990, PART VI, SECTION B, LINE 12C |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 4 | FORM 990, PART VI, SECTION B, LINE 15 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 5 | FORM 990, PART VI, SECTION C, LINE 19 |
| IRS990/SchoolOperatingInd | 0 | 1 |
| IRS990/SignificantChangeInd | 0 | 0 |
| IRS990/SignificantNewProgramSrvcInd | 0 | 0 |
| IRS990/StatesWhereCopyOfReturnIsFldCd | 0 | CT |
| IRS990/SubjectToExcsTaxNetInvstIncInd | 0 | 0 |
| IRS990/SubjectToProxyTaxInd | 0 | 0 |
| IRS990/SubjToTaxRmnrtnExPrchtPymtInd | 0 | 0 |
| IRS990/TaxablePartyNotificationInd | 0 | 0 |
| IRS990/TaxExemptBondsInd | 0 | 0 |
| IRS990/TerminateOperationsInd | 0 | 0 |
| IRS990/TotalAssetsBOYAmt | 0 | 29514578 |
| IRS990/TotalAssetsEOYAmt | 0 | 38225402 |
| IRS990/TotalAssetsGrp/BOYAmt | 0 | 29514578 |
| IRS990/TotalAssetsGrp/EOYAmt | 0 | 38225402 |
| IRS990/TotalCompGreaterThan150KInd | 0 | 1 |
| IRS990/TotalContributionsAmt | 0 | 10125709 |
| IRS990/TotalEmployeeCnt | 0 | 13 |
| IRS990/TotalFunctionalExpensesGrp/FundraisingAmt | 0 | 0 |
| IRS990/TotalFunctionalExpensesGrp/ManagementAndGeneralAmt | 0 | 102062 |
| IRS990/TotalFunctionalExpensesGrp/ProgramServicesAmt | 0 | 1712493 |
| IRS990/TotalFunctionalExpensesGrp/TotalAmt | 0 | 1814555 |
| IRS990/TotalGrossUBIAmt | 0 | 0 |
| IRS990/TotalLiabilitiesBOYAmt | 0 | 1459767 |
| IRS990/TotalLiabilitiesEOYAmt | 0 | 1031776 |
| IRS990/TotalLiabilitiesGrp/BOYAmt | 0 | 1459767 |
| IRS990/TotalLiabilitiesGrp/EOYAmt | 0 | 1031776 |
| IRS990/TotalNetAssetsFundBalanceGrp/BOYAmt | 0 | 28054811 |
| IRS990/TotalNetAssetsFundBalanceGrp/EOYAmt | 0 | 37193626 |
| IRS990/TotalOtherCompensationAmt | 0 | 5077 |
| IRS990/TotalProgramServiceExpensesAmt | 0 | 1712493 |
| IRS990/TotalProgramServiceRevenueAmt | 0 | 824167 |
| IRS990/TotalReportableCompFromOrgAmt | 0 | 151032 |
| IRS990/TotalRevenueGrp/ExclusionAmt | 0 | 2462 |
| IRS990/TotalRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 825199 |
| IRS990/TotalRevenueGrp/TotalRevenueColumnAmt | 0 | 10953370 |
| IRS990/TotalRevenueGrp/UnrelatedBusinessRevenueAmt | 0 | 0 |
| IRS990/TotalVolunteersCnt | 0 | 10 |
| IRS990/TotLiabNetAssetsFundBalanceGrp/BOYAmt | 0 | 29514578 |
| IRS990/TotLiabNetAssetsFundBalanceGrp/EOYAmt | 0 | 38225402 |
| IRS990/TotReportableCompRltdOrgAmt | 0 | 0 |
| IRS990/TrnsfrExmptNonChrtblRltdOrgInd | 0 | 0 |
| IRS990/TypeOfOrganizationCorpInd | 0 | X |
| IRS990/UnrelatedBusIncmOverLimitInd | 0 | 0 |
| IRS990/UponRequestInd | 0 | X |
| IRS990/USAddress/AddressLine1Txt | 0 | 124 MANSFIELD ROAD |
| IRS990/USAddress/CityNm | 0 | NORTH HAVEN |
| IRS990/USAddress/StateAbbreviationCd | 0 | CT |
| IRS990/USAddress/ZIPCd | 0 | 06473 |
| IRS990/VotingMembersGoverningBodyCnt | 0 | 5 |
| IRS990/VotingMembersIndependentCnt | 0 | 3 |
| IRS990/WebsiteAddressTxt | 0 | SLATESCHOOL.ORG |
| IRS990/WhistleblowerPolicyInd | 0 | 1 |
| ReturnHeader/BuildTS | 0 | 2025-03-06 01:10:19Z |
| ReturnHeader/BusinessOfficerGrp/DiscussWithPaidPreparerInd | 0 | 1 |
| ReturnHeader/BusinessOfficerGrp/PersonNm | 0 | JENNIFER STAPLE CLARK |
| ReturnHeader/BusinessOfficerGrp/PersonTitleTxt | 0 | DIRECTOR |
No mirrored PDF or thumbnail assets are attached yet.