Liabilities / Assets
80th percentile
Higher debt load relative to assets than 80% of similar nonprofits.
EIN 74-2767150 • 501(c)3 • Austin, TX
Profile
Griffin School is a college preparatory high school community defined by academic rigor and creativity. Our mission is to cultivate individual potential and intellectual curiosity within a vibrant and engaged community.
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
80th percentile
Higher debt load relative to assets than 80% of similar nonprofits.
Liabilities / Revenue
83rd percentile
Higher debt load relative to revenue than 83% of similar nonprofits.
Net Margin
43rd percentile
Higher net margin than 43% of similar nonprofits.
Top Officer Pay
41st percentile
Higher top officer pay than 41% of similar nonprofits.
Top officer pay equals 2.4% of source-year revenue.
Asset Growth
36th percentile
Faster asset growth than 36% of similar nonprofits.
Revenue Growth
49th percentile
Faster revenue growth than 49% of similar nonprofits.
Assets
Up$7,750,950
Up $6,053 (+0.1%) from 2024
Liabilities
Down$4,043,875
Down $79,835 (-1.9%) from 2024
Net Assets
Up$3,707,075
Up $85,888 (+2.4%) from 2024
Revenue
Up$4,579,140
Up $285,788 (+6.7%) from 2024
Expenses
Up$4,496,971
Up $418,071 (+10%) from 2024
Net Income
Down$82,169
Down $132,283 (-62%) from 2024
Most recent year
2025 • Form 990Detailed filing. Detailed filing data is available for this year.
Griffin School is a college preparatory high school community defined by academic rigor and creativity. Our mission is to cultivate individual potential and intellectual curiosity within a vibrant and engaged community.
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Land, Buildings, and Equipment, Net | $3,845,098 | $3,763,316 | ▼ $81,782 |
| Savings and Temporary Cash Investments | $2,020,415 | $2,412,887 | ▲ $392,472 |
| Cash and Non-Interest-Bearing Accounts | $1,340,655 | $1,089,251 | ▼ $251,404 |
| Prepaid Expenses and Deferred Charges | $95,046 | $48,117 | ▼ $46,929 |
| Investments in Publicly Traded Securities | $11,448 | $11,396 | ▼ $52 |
| Accounts Receivable | $5,000 | $0 | ▼ $5,000 |
| Other Notes and Loans Receivable, Net | - | $0 | - |
| Pledges and Grants Receivable | - | $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 | $7,744,897 | $7,750,950 | ▲ $6,053 |
| Other Assets Total | $427,235 | $425,983 | ▼ $1,252 |
| Liabilities | |||
| Deferred Revenue | $1,985,126 | $2,053,991 | ▲ $68,865 |
| Mortgage Notes Payable Secured by Investment Property | $1,629,665 | $1,459,677 | ▼ $169,988 |
| Other Liabilities | $466,206 | $473,531 | ▲ $7,325 |
| Accounts Payable and Accrued Expenses | $42,713 | $56,676 | ▲ $13,963 |
| Total Liabilities | $4,123,710 | $4,043,875 | ▼ $79,835 |
| Net Assets / Fund Balance | |||
| Net Assets Without Donor Restrictions | $3,551,904 | $3,662,216 | ▲ $110,312 |
| Net Assets With Donor Restrictions | $69,283 | $44,859 | ▼ $24,424 |
| Total Net Assets Fund Balance | $3,621,187 | $3,707,075 | ▲ $85,888 |
| Total Liabilities and Net Assets / Fund Balance | $7,744,897 | $7,750,950 | ▲ $6,053 |
| Asset | Book Value | Depreciation | Basis |
|---|---|---|---|
| Buildings | $2,683,580 | $711,449 | $3,395,029 |
| Land | $824,320 | - | $824,320 |
| Leasehold Improvements | $192,459 | $91,773 | $284,232 |
| Other Land Buildings | $6,023 | $178,485 | $184,508 |
| Equipment | $56,934 | $120,225 | $177,159 |
| Other Assets Org | $11,000 | - | - |
| Name | Title | Full / Part Time | Base | Total |
|---|---|---|---|---|
| Adam Wilson | Vice President | FT | $108,242 | $108,242 |
| Name | Title |
|---|---|
| Wendy Salome | President |
| Ana Maria Marsland | Director |
| Jennifer Cavner | Director |
| Lenora Parkey | Director |
| Lindsey Hale Sanders | Director |
| Rob Borham | Director |
| Teryl Booth | Director |
| Valeria Camnasio-Quevedo | Director |
| Kristina Fumiko Rollins | Secretary |
| Chermaine Fullinck | Treasurer |
| Line Item | Amount |
|---|---|
| Salaries, Compensation, and Employee Benefits | $2,657,248 |
| Other Expenses | $1,378,604 |
| Grants and Similar Amounts Paid | $461,119 |
| Total Fundraising Expense | $80,717 |
| Professional Fundraising Fees | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Other Salaries and Wages | $1,869,535 | $236,378 | $42,978 | $2,148,891 |
| Grants to Domestic Individuals | $461,119 | - | - | $461,119 |
| Fees for Services Other | $328,355 | $41,517 | $7,549 | $377,421 |
| Occupancy | $270,944 | $34,434 | $6,261 | $311,639 |
| Payroll Taxes | $164,357 | $20,781 | $3,778 | $188,916 |
| Other Employee Benefits | $122,040 | $15,430 | $2,806 | $140,276 |
| Depreciation Depletion | $105,293 | $13,313 | $2,421 | $121,027 |
| Current Officers, Directors, Trustees, and Key Employees | $100,012 | $12,645 | $2,299 | $114,956 |
| Pension Plan Contributions | $55,862 | $7,063 | $1,284 | $64,209 |
| Insurance | $52,495 | $6,637 | $1,207 | $60,339 |
| Other Expenses | $44,324 | $5,427 | $987 | $50,738 |
| All Other Expenses | $41,670 | $5,270 | $958 | $47,898 |
| Advertising | $24,797 | $3,135 | $570 | $28,502 |
| Office Expenses | $18,888 | $2,388 | $434 | $21,710 |
| Information Technology | $16,888 | $2,135 | $388 | $19,411 |
| Fees for Services Accounting | $7,495 | $948 | $172 | $8,615 |
| Travel | $2,151 | $272 | $49 | $2,472 |
| Total Functional Expenses | $3,972,310 | $443,944 | $80,717 | $4,496,971 |
| Line Item | Amount |
|---|---|
| Professional Fundraising Fees | $0 |
| Line Item | Beginning | End | Change |
|---|---|---|---|
| Receivables from Disqualified Persons | - | $0 | - |
| Receivables from Officers, Directors, Trustees, and Key Employees | - | $0 | - |
| Liability | Amount |
|---|---|
| Items Due to EANS | $410,275 |
| Payroll Liabilities | $62,255 |
| Security Deposit | $1,000 |
| Rounding | $1 |
“Our organization does not have committees.”
“The Board Treasurer and Head of School will review the 990 and make a presentation to the Board as a whole.”
“Potential conflicts of interest are reviewed by the Board and documented in the minutes.”
“Compensation for top management is reviewed by the Board and documented in the minutes.”
“A budget draft is provided to the Board that includes a line item for salaries, and the Board amends and ultimately approved of the budget. The Board also maintains expectations about teacher and administrator salaries based on available data - usually we compare with the published salary scales for local school districts. Specific salaries are set for all employees including key administrators within that framework.”
“No documents available to the public.”
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 | 42713 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 56676 |
| IRS990/AccountsReceivableGrp/BOYAmt | 0 | 5000 |
| IRS990/AccountsReceivableGrp/EOYAmt | 0 | 0 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | false |
| IRS990/ActivityOrMissionDesc | 0 | Griffin School is a college preparatory high school community defined by academic rigor and creativity. Our mission is to cultivate individual potential and intellectual curiosity within a vibrant and engaged community. |
| IRS990/AdvertisingGrp/FundraisingAmt | 0 | 570 |
| IRS990/AdvertisingGrp/ManagementAndGeneralAmt | 0 | 3135 |
| IRS990/AdvertisingGrp/ProgramServicesAmt | 0 | 24797 |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 28502 |
| IRS990/AllOtherContributionsAmt | 0 | 291757 |
| IRS990/AllOtherExpensesGrp/FundraisingAmt | 0 | 958 |
| IRS990/AllOtherExpensesGrp/ManagementAndGeneralAmt | 0 | 5270 |
| IRS990/AllOtherExpensesGrp/ProgramServicesAmt | 0 | 41670 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 47898 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | true |
| IRS990/BackupWthldComplianceInd | 0 | true |
| IRS990/BenefitsToMembersGrp/TotalAmt | 0 | 0 |
| IRS990/BooksInCareOfDetail/PersonNm | 0 | Jazzmine Porter |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 5124545797 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 5001 Evans Ave |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | Austin |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | TX |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 78751 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | false |
| IRS990/BusinessRlnWithFamMemInd | 0 | false |
| IRS990/BusinessRlnWithOrgMemInd | 0 | false |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 1340655 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 1089251 |
| IRS990/ChangeToOrgDocumentsInd | 0 | false |
| IRS990/CntrctRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/CollectionsOfArtInd | 0 | false |
| IRS990/CompCurrentOfcrDirectorsGrp/FundraisingAmt | 0 | 2299 |
| IRS990/CompCurrentOfcrDirectorsGrp/ManagementAndGeneralAmt | 0 | 12645 |
| IRS990/CompCurrentOfcrDirectorsGrp/ProgramServicesAmt | 0 | 100012 |
| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 114956 |
| IRS990/CompDisqualPersonsGrp/TotalAmt | 0 | 0 |
| IRS990/CompensationFromOtherSrcsInd | 0 | false |
| IRS990/CompensationProcessCEOInd | 0 | true |
| IRS990/CompensationProcessOtherInd | 0 | true |
| IRS990/ConferencesMeetingsGrp/TotalAmt | 0 | 0 |
| IRS990/ConflictOfInterestPolicyInd | 0 | true |
| IRS990/ConservationEasementsInd | 0 | false |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | false |
| IRS990/CreditCounselingInd | 0 | false |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 291757 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 461119 |
| IRS990/CYInvestmentIncomeAmt | 0 | 67493 |
| IRS990/CYOtherExpensesAmt | 0 | 1378604 |
| IRS990/CYOtherRevenueAmt | 0 | 46610 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 4173280 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | 82169 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 2657248 |
| IRS990/CYTotalExpensesAmt | 0 | 4496971 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 80717 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 4579140 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | false |
| IRS990/DeductibleArtContributionInd | 0 | false |
| IRS990/DeductibleNonCashContriInd | 0 | false |
| IRS990/DeferredRevenueGrp/BOYAmt | 0 | 1985126 |
| IRS990/DeferredRevenueGrp/EOYAmt | 0 | 2053991 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | false |
| IRS990/DepreciationDepletionGrp/FundraisingAmt | 0 | 2421 |
| IRS990/DepreciationDepletionGrp/ManagementAndGeneralAmt | 0 | 13313 |
| IRS990/DepreciationDepletionGrp/ProgramServicesAmt | 0 | 105293 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 121027 |
| IRS990/Desc | 0 | Griffin School is a college preparatory high school community defined by academic rigor and creativity. Our mission is to cultivate individual potential and intellectual curiosity within a vibrant and engaged community. |
| IRS990/DescribedInSection501c3Ind | 0 | true |
| IRS990/DisregardedEntityInd | 0 | false |
| IRS990/DocumentRetentionPolicyInd | 0 | true |
| IRS990/DonorAdvisedFundInd | 0 | false |
| IRS990/DonorRestrictionNetAssetsGrp/BOYAmt | 0 | 69283 |
| IRS990/DonorRestrictionNetAssetsGrp/EOYAmt | 0 | 44859 |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | false |
| IRS990/ElectionOfBoardMembersInd | 0 | false |
| IRS990/EmployeeCnt | 0 | 40 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | true |
| IRS990/EngagedInExcessBenefitTransInd | 0 | false |
| IRS990/ExpenseAmt | 0 | 3972310 |
| IRS990/FamilyOrBusinessRlnInd | 0 | false |
| IRS990/FederalGrantAuditRequiredInd | 0 | false |
| IRS990/FeesForServicesAccountingGrp/FundraisingAmt | 0 | 172 |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 948 |
| IRS990/FeesForServicesAccountingGrp/ProgramServicesAmt | 0 | 7495 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 8615 |
| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 0 |
| IRS990/FeesForServicesLobbyingGrp/TotalAmt | 0 | 0 |
| IRS990/FeesForServicesManagementGrp/TotalAmt | 0 | 0 |
| IRS990/FeesForServicesOtherGrp/FundraisingAmt | 0 | 7549 |
| IRS990/FeesForServicesOtherGrp/ManagementAndGeneralAmt | 0 | 41517 |
| IRS990/FeesForServicesOtherGrp/ProgramServicesAmt | 0 | 328355 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 377421 |
| 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 | 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/AverageHoursPerWeekRltdOrgRt | 9 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 10 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 1.00 |
| 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/AverageHoursPerWeekRt | 9 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 10 | 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/OtherCompensationAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | Adam Wilson |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | Jennifer Cavner |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | Lenora Parkey |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | Lindsey Hale Sanders |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | Rob Borham |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | Teryl Booth |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | Valeria Camnasio-Quevedo |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | Ana Maria Marsland |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | Chermaine Fullinck |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | Kristina Fumiko Rollins |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | Wendy Salome |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 108242 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | Vice President |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | Director |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | Director |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | Director |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | Director |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | Director |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | Director |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | Director |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | Treasurer |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | Secretary |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 10 | President |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | true |
| IRS990/FormationYr | 0 | 1995 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | false |
| IRS990/FSAuditedInd | 0 | false |
| IRS990/FundraisingActivitiesInd | 0 | false |
| IRS990/GamingActivitiesInd | 0 | false |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 9 |
| IRS990/GrantAmt | 0 | 461119 |
| IRS990/GrantsToDomesticIndividualsGrp/ProgramServicesAmt | 0 | 461119 |
| IRS990/GrantsToDomesticIndividualsGrp/TotalAmt | 0 | 461119 |
| IRS990/GrantsToDomesticOrgsGrp/TotalAmt | 0 | 0 |
| IRS990/GrantsToIndividualsInd | 0 | true |
| IRS990/GrantsToOrganizationsInd | 0 | false |
| IRS990/GrantToRelatedPersonInd | 0 | false |
| IRS990/GrossReceiptsAmt | 0 | 4579140 |
| IRS990/GrossRentsGrp/RealAmt | 0 | 38335 |
| IRS990/GroupReturnForAffiliatesInd | 0 | false |
| IRS990/IncludeFIN48FootnoteInd | 0 | false |
| IRS990/IncmFromInvestBondProceedsGrp/TotalRevenueColumnAmt | 0 | 0 |
| IRS990/IndependentAuditFinclStmtInd | 0 | false |
| IRS990/IndependentVotingMemberCnt | 0 | 9 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 1 |
| IRS990/IndoorTanningServicesInd | 0 | false |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InformationTechnologyGrp/FundraisingAmt | 0 | 388 |
| IRS990/InformationTechnologyGrp/ManagementAndGeneralAmt | 0 | 2135 |
| IRS990/InformationTechnologyGrp/ProgramServicesAmt | 0 | 16888 |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 19411 |
| IRS990/InsuranceGrp/FundraisingAmt | 0 | 1207 |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 6637 |
| IRS990/InsuranceGrp/ProgramServicesAmt | 0 | 52495 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 60339 |
| IRS990/IntangibleAssetsGrp/EOYAmt | 0 | 0 |
| IRS990/InterestGrp/TotalAmt | 0 | 0 |
| IRS990/InventoriesForSaleOrUseGrp/EOYAmt | 0 | 0 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 67493 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 67493 |
| IRS990/InvestmentInJointVentureInd | 0 | false |
| IRS990/InvestmentsOtherSecuritiesGrp/EOYAmt | 0 | 0 |
| IRS990/InvestmentsProgramRelatedGrp/EOYAmt | 0 | 0 |
| IRS990/InvestmentsPubTradedSecGrp/BOYAmt | 0 | 11448 |
| IRS990/InvestmentsPubTradedSecGrp/EOYAmt | 0 | 11396 |
| IRS990/IRPDocumentCnt | 0 | 54 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 1101932 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 3845098 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 3763316 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 4865248 |
| IRS990/LegalDomicileStateCd | 0 | TX |
| 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 | Griffin School is a college preparatory high school community defined by academic rigor and creativity. Our mission is to cultivate individual potential and intellectual curiosity within a vibrant and engaged community. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | false |
| IRS990/MoreThan5000KToOrgInd | 0 | false |
| IRS990/MortgNotesPyblScrdInvstPropGrp/BOYAmt | 0 | 1629665 |
| IRS990/MortgNotesPyblScrdInvstPropGrp/EOYAmt | 0 | 1459677 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 3621187 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 3707075 |
| IRS990/NetGainOrLossInvestmentsGrp/TotalRevenueColumnAmt | 0 | 0 |
| IRS990/NetIncmFromFundraisingEvtGrp/TotalRevenueColumnAmt | 0 | 0 |
| IRS990/NetIncomeFromGamingGrp/TotalRevenueColumnAmt | 0 | 0 |
| IRS990/NetIncomeOrLossGrp/TotalRevenueColumnAmt | 0 | 0 |
| IRS990/NetRentalIncomeOrLossGrp/ExclusionAmt | 0 | 38335 |
| IRS990/NetRentalIncomeOrLossGrp/TotalRevenueColumnAmt | 0 | 38335 |
| IRS990/NetUnrlzdGainsLossesInvstAmt | 0 | -73 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 3551904 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 3662216 |
| IRS990/NoncashContributionsAmt | 0 | 1257 |
| IRS990/NondeductibleContributionsInd | 0 | false |
| IRS990/OccupancyGrp/FundraisingAmt | 0 | 6261 |
| IRS990/OccupancyGrp/ManagementAndGeneralAmt | 0 | 34434 |
| IRS990/OccupancyGrp/ProgramServicesAmt | 0 | 270944 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 311639 |
| IRS990/OfficeExpensesGrp/FundraisingAmt | 0 | 434 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 2388 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 18888 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 21710 |
| IRS990/OfficerMailingAddressInd | 0 | false |
| IRS990/OperateHospitalInd | 0 | false |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherAssetsTotalGrp/BOYAmt | 0 | 427235 |
| IRS990/OtherAssetsTotalGrp/EOYAmt | 0 | 425983 |
| IRS990/OtherEmployeeBenefitsGrp/FundraisingAmt | 0 | 2806 |
| IRS990/OtherEmployeeBenefitsGrp/ManagementAndGeneralAmt | 0 | 15430 |
| IRS990/OtherEmployeeBenefitsGrp/ProgramServicesAmt | 0 | 122040 |
| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 140276 |
| IRS990/OtherExpensesGrp/Desc | 0 | Student Trip Expenses |
| IRS990/OtherExpensesGrp/Desc | 1 | Student Lunch Service Expenses |
| IRS990/OtherExpensesGrp/Desc | 2 | Other Program Expenses |
| IRS990/OtherExpensesGrp/Desc | 3 | Material & Supplies |
| IRS990/OtherExpensesGrp/FundraisingAmt | 0 | 2520 |
| IRS990/OtherExpensesGrp/FundraisingAmt | 1 | 2212 |
| IRS990/OtherExpensesGrp/FundraisingAmt | 2 | 1844 |
| IRS990/OtherExpensesGrp/FundraisingAmt | 3 | 987 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 13860 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 1 | 12167 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 2 | 10144 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 3 | 5427 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 109621 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 96231 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 2 | 80233 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 3 | 44324 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 126001 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 110610 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 92221 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 50738 |
| IRS990/OtherLiabilitiesGrp/BOYAmt | 0 | 466206 |
| IRS990/OtherLiabilitiesGrp/EOYAmt | 0 | 473531 |
| IRS990/OtherRevenueMiscGrp/BusinessCd | 0 | 900099 |
| IRS990/OtherRevenueMiscGrp/BusinessCd | 1 | 900099 |
| IRS990/OtherRevenueMiscGrp/BusinessCd | 2 | 900099 |
| IRS990/OtherRevenueMiscGrp/Desc | 0 | Credit Card Rewards |
| IRS990/OtherRevenueMiscGrp/Desc | 1 | ID & Key Card Replacement Fee |
| IRS990/OtherRevenueMiscGrp/Desc | 2 | Late Fees & Penalties |
| IRS990/OtherRevenueMiscGrp/RelatedOrExemptFuncIncomeAmt | 0 | 6470 |
| IRS990/OtherRevenueMiscGrp/RelatedOrExemptFuncIncomeAmt | 1 | 1455 |
| IRS990/OtherRevenueMiscGrp/RelatedOrExemptFuncIncomeAmt | 2 | 350 |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 0 | 6470 |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 1 | 1455 |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 2 | 350 |
| IRS990/OtherRevenueTotalAmt | 0 | 8275 |
| IRS990/OtherSalariesAndWagesGrp/FundraisingAmt | 0 | 42978 |
| IRS990/OtherSalariesAndWagesGrp/ManagementAndGeneralAmt | 0 | 236378 |
| IRS990/OtherSalariesAndWagesGrp/ProgramServicesAmt | 0 | 1869535 |
| IRS990/OtherSalariesAndWagesGrp/TotalAmt | 0 | 2148891 |
| IRS990/OthNotesLoansReceivableNetGrp/EOYAmt | 0 | 0 |
| IRS990/PartialLiquidationInd | 0 | false |
| IRS990/PaymentsToAffiliatesGrp/TotalAmt | 0 | 0 |
| IRS990/PayPremiumsPrsnlBnftCntrctInd | 0 | false |
| IRS990/PayrollTaxesGrp/FundraisingAmt | 0 | 3778 |
| IRS990/PayrollTaxesGrp/ManagementAndGeneralAmt | 0 | 20781 |
| IRS990/PayrollTaxesGrp/ProgramServicesAmt | 0 | 164357 |
| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 188916 |
| IRS990/PensionPlanContributionsGrp/FundraisingAmt | 0 | 1284 |
| IRS990/PensionPlanContributionsGrp/ManagementAndGeneralAmt | 0 | 7063 |
| IRS990/PensionPlanContributionsGrp/ProgramServicesAmt | 0 | 55862 |
| IRS990/PensionPlanContributionsGrp/TotalAmt | 0 | 64209 |
| IRS990/PledgesAndGrantsReceivableGrp/EOYAmt | 0 | 0 |
| IRS990/PoliticalCampaignActyInd | 0 | false |
| IRS990/PrepaidExpensesDefrdChargesGrp/BOYAmt | 0 | 95046 |
| IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt | 0 | 48117 |
| IRS990/PrincipalOfficerNm | 0 | Adam Wilson |
| IRS990/PriorPeriodAdjustmentsAmt | 0 | 3792 |
| IRS990/ProfessionalFundraisingInd | 0 | false |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 0 | 611600 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 1 | 611600 |
| IRS990/ProgramServiceRevenueGrp/Desc | 0 | Program Fees |
| IRS990/ProgramServiceRevenueGrp/Desc | 1 | Tuition |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 275726 |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 1 | 3897554 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 0 | 275726 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 1 | 3897554 |
| IRS990/ProhibitedTaxShelterTransInd | 0 | false |
| IRS990/PYContributionsGrantsAmt | 0 | 325953 |
| IRS990/PYExcessBenefitTransInd | 0 | false |
| IRS990/PYGrantsAndSimilarPaidAmt | 0 | 296045 |
| IRS990/PYInvestmentIncomeAmt | 0 | 62125 |
| IRS990/PymtTravelEntrtnmntPubOfclGrp/TotalAmt | 0 | 0 |
| IRS990/PYOtherExpensesAmt | 0 | 1284562 |
| IRS990/PYOtherRevenueAmt | 0 | 70333 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 3834941 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | 214452 |
| IRS990/PYSalariesCompEmpBnftPaidAmt | 0 | 2498293 |
| IRS990/PYTotalExpensesAmt | 0 | 4078900 |
| IRS990/PYTotalRevenueAmt | 0 | 4293352 |
| IRS990/QuidProQuoContributionsInd | 0 | false |
| IRS990/RcvblFromDisqualifiedPrsnGrp/EOYAmt | 0 | 0 |
| IRS990/RcvFndsToPayPrsnlBnftCntrctInd | 0 | false |
| IRS990/ReceivablesFromOfficersEtcGrp/EOYAmt | 0 | 0 |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | 82169 |
| IRS990/RegularMonitoringEnfrcInd | 0 | true |
| IRS990/RelatedEntityInd | 0 | false |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | false |
| IRS990/RentalIncomeOrLossGrp/RealAmt | 0 | 38335 |
| IRS990/ReportInvestmentsOtherSecInd | 0 | false |
| IRS990/ReportLandBuildingEquipmentInd | 0 | true |
| IRS990/ReportOtherAssetsInd | 0 | true |
| IRS990/ReportOtherLiabilitiesInd | 0 | true |
| IRS990/ReportProgramRelatedInvstInd | 0 | false |
| IRS990/RevenueAmt | 0 | 4173280 |
| IRS990/RoyaltiesGrp/TotalAmt | 0 | 0 |
| IRS990/RoyaltiesRevenueGrp/TotalRevenueColumnAmt | 0 | 0 |
| IRS990/SavingsAndTempCashInvstGrp/BOYAmt | 0 | 2020415 |
| IRS990/SavingsAndTempCashInvstGrp/EOYAmt | 0 | 2412887 |
| 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 |
| IRS990ScheduleD/BuildingsGrp/BookValueAmt | 0 | 2683580 |
| IRS990ScheduleD/BuildingsGrp/DepreciationAmt | 0 | 711449 |
| IRS990ScheduleD/BuildingsGrp/OtherCostOrOtherBasisAmt | 0 | 3395029 |
| IRS990ScheduleD/EquipmentGrp/BookValueAmt | 0 | 56934 |
| IRS990ScheduleD/EquipmentGrp/DepreciationAmt | 0 | 120225 |
| IRS990ScheduleD/EquipmentGrp/OtherCostOrOtherBasisAmt | 0 | 177159 |
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