Liabilities / Assets
33rd percentile
Higher debt load relative to assets than 33% of similar nonprofits.
EIN 74-2529262 • 501(c)3 • San Antonio, TX
Profile
Provide a personalized college preparatory education to students with high potential and identified learning differences for grades k - 12.
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
33rd percentile
Higher debt load relative to assets than 33% of similar nonprofits.
Liabilities / Revenue
45th percentile
Higher debt load relative to revenue than 45% of similar nonprofits.
Net Margin
17th percentile
Higher net margin than 17% of similar nonprofits.
Top Officer Pay
Score unavailable
No filing with officer rows is available for this organization yet.
Asset Growth
35th percentile
Faster asset growth than 35% of similar nonprofits.
Revenue Growth
99th percentile
Faster revenue growth than 99% of similar nonprofits.
Assets
Down$16,588,006
Down $534,562 (-3.1%) from 2023
Liabilities
Down$1,035,594
Down $42,544 (-3.9%) from 2023
Net Assets
Down$15,552,412
Down $492,018 (-3.1%) from 2023
Revenue
Down$4,847,198
Down $862,890 (-15%) from 2023
Expenses
Down$5,646,917
Down $683,989 (-11%) from 2023
Net Income
Down-$799,719
Down $178,901 (-29%) from 2023
Most recent year
2024 • Form 990XML pending. An XML filing is linked for this year, but detailed extraction is still pending.
The latest 2024 filing currently has linked XML that has not been fully parsed yet. Showing the latest detailed filing from 2021 below.
The winston school san antonio provides a personalized, college preparatory education to students with high potential and identified learning differences for grades k - 12. A winston school graduate is confident, well-rounded, and a life-long self advocate.
Provide education for students in grades K-12 diagnosed with learning differences.
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Land, Buildings, and Equipment, Net | $9,251,791 | $10,684,473 | ▲ $1,432,682 |
| Investments in Publicly Traded Securities | $8,234,442 | $6,603,135 | ▼ $1,631,307 |
| Cash and Non-Interest-Bearing Accounts | $499,904 | $946,466 | ▲ $446,562 |
| Pledges and Grants Receivable | $907,974 | $521,192 | ▼ $386,782 |
| Accounts Receivable | $171,590 | $92,808 | ▼ $78,782 |
| Prepaid Expenses and Deferred Charges | $15,805 | $20,570 | ▲ $4,765 |
| Total Assets | $19,081,506 | $18,868,644 | ▼ $212,862 |
| Liabilities | |||
| Accounts Payable and Accrued Expenses | $1,405,303 | $570,090 | ▼ $835,213 |
| Other Liabilities | $488,900 | $200,400 | ▼ $288,500 |
| Deferred Revenue | $207,962 | $186,614 | ▼ $21,348 |
| Total Liabilities | $2,102,165 | $957,104 | ▼ $1,145,061 |
| Net Assets / Fund Balance | |||
| Net Assets Without Donor Restrictions | $13,848,522 | $14,033,429 | ▲ $184,907 |
| Net Assets With Donor Restrictions | $3,130,819 | $3,878,111 | ▲ $747,292 |
| Total Net Assets Fund Balance | $16,979,341 | $17,911,540 | ▲ $932,199 |
| Total Liabilities and Net Assets / Fund Balance | $19,081,506 | $18,868,644 | ▼ $212,862 |
| Asset | Book Value | Depreciation | Basis |
|---|---|---|---|
| Other Land Buildings | $8,295,013 | $0 | $8,295,013 |
| Buildings | $2,207,611 | $1,633,224 | $3,840,835 |
| Equipment | $22,289 | $1,010,069 | $1,032,358 |
| Leasehold Improvements | $159,560 | $630,888 | $790,448 |
| Land | $0 | - | - |
| Period | Beginning | Contrib. | Gain/Loss | Other Uses | End |
|---|---|---|---|---|---|
| 2020 | $394,748 | - | ▲ $152,256 | - | $547,004 |
| 2019 | $403,281 | - | ▼ $8,533 | - | $394,748 |
| 2018 | $409,101 | - | ▼ $5,820 | - | $403,281 |
| 2017 | $361,478 | - | ▲ $47,623 | - | $409,101 |
| 2016 | $325,758 | - | ▲ $56,150 | - | $361,478 |
| Name | Title | Full / Part Time | Base | Other | Total |
|---|---|---|---|---|---|
| Charles J Karulak | Educational Headmaster | FT | $226,650 | $118,108 | $344,758 |
| Charles J Karulak | - | - | $217,500 | $127,258 | $344,758 |
| Name | Title |
|---|---|
| William Carrington | Chair |
| DrJulia CarbajalED | Vice Chair |
| Amy Perry | Trustee |
| Arnold Espe | Trustee |
| Brett Morgan | Trustee |
| Julie Truss | Trustee |
| Katherine Korbell Brown | Trustee |
| Michael Calloway | Trustee |
| Mrs Margie Warren | Trustee |
| Nancy Rivers Dunson | Trustee |
| Tracy Egan-Calloway | Trustee |
| Carol Zernial | Secretary |
| Patrick PerronCPA | Treasurer |
| Line Item | Amount |
|---|---|
| Salaries, Compensation, and Employee Benefits | $2,912,882 |
| Other Expenses | $1,087,494 |
| Grants and Similar Amounts Paid | $368,361 |
| Professional Fundraising Fees | $0 |
| Total Fundraising Expense | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Other Salaries and Wages | $1,769,908 | $334,845 | $0 | $2,104,753 |
| Grants to Domestic Orgs | $368,361 | - | - | $368,361 |
| Current Officers, Directors, Trustees, and Key Employees | $0 | $344,758 | $0 | $344,758 |
| Office Expenses | $0 | $244,553 | $0 | $244,553 |
| Payroll Taxes | $137,836 | $55,738 | $0 | $193,574 |
| Other Employee Benefits | $102,162 | $82,489 | $0 | $184,651 |
| Depreciation Depletion | $122,752 | $0 | $0 | $122,752 |
| Occupancy | $58,206 | $50,056 | $0 | $108,262 |
| Pension Plan Contributions | $65,936 | $19,210 | $0 | $85,146 |
| Insurance | $0 | $84,222 | $0 | $84,222 |
| Fees for Services Legal | $0 | $74,367 | $0 | $74,367 |
| All Other Expenses | $0 | $38,496 | $0 | $38,496 |
| Advertising | $0 | $27,951 | $0 | $27,951 |
| Fees for Services Accounting | $0 | $20,500 | $0 | $20,500 |
| Information Technology | $0 | $18,466 | $0 | $18,466 |
| Other Expenses | $3,821 | $0 | $0 | $3,821 |
| Total Functional Expenses | $2,973,086 | $1,395,651 | $0 | $4,368,737 |
| Line Item | Amount |
|---|---|
| Total Expenses per Audited Statements | $4,736,737 |
| Expenses per Audited Statements | $4,368,737 |
| Total Expenses per Form 990 | $4,368,737 |
| Expenses Not Reported on Form 990 | $368,000 |
| Line Item | Amount |
|---|---|
| Fundraising Gross Income | $111,346 |
| Fundraising Direct Expenses | $38,759 |
| Professional Fundraising Fees | $0 |
| Event | Gross Receipts | Gross Revenue | Direct Expenses | Net Income |
|---|---|---|---|---|
| Annual Auction | $102,446 | $102,446 | $11,350 | $91,096 |
| Total Events | $102,446 | $102,446 | $27,926 | $74,520 |
| Liability | Amount |
|---|---|
| Note Payable (PPL Loan) | $156,642 |
| Note Payable (PPL Loan) | $43,758 |
“Certain members of the board are related through family. A member of the board is employed by an insurance provider used by the School. Periodically, the School uses the service of a Board member or a company where the board member is either employed or owns an interest. These services are in normal course of business and are not significant to the financial operations of the School,”
“The form 990 is prepared by the School's independent certified public accounting firm. It is reviewed by the Director of Finance and the Headmaster, then reviewed by the Audit Committee and full Board before signing and filing.”
“Board members are required to complete a conflict of interest statement each year. Any board member joining the Board mid-year is also required to complete a statement.”
“The executive committe of the board conducts an evaluation of the Headmaster. They refer to a salary scale comprised of ISAS schools grouped by size.”
“The Headmaster evaluates each key employee on an annual basis. All employees are granted the same percentage increase. On occassion, some employees may be granted an additional percentage increase or a bonus at the Headmaster's discretion.”
“The School makes its governing documents, conflict of interest policy and audited financial statements available to the public upon written request to its administrative office.”
“Line 9 The net assets were increased to reflect an addition of $5,290 which is non-Operating Capital Contributions for the cafeteria. The gain on the extinguishment of the PPP Loan of $488,900 increased net assets.”
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 | 1405303 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 570090 |
| IRS990/AccountsReceivableGrp/BOYAmt | 0 | 171590 |
| IRS990/AccountsReceivableGrp/EOYAmt | 0 | 92808 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | false |
| IRS990/ActivityOrMissionDesc | 0 | Provide education for students in grades K-12 diagnosed with learning differences. |
| IRS990/AdvertisingGrp/FundraisingAmt | 0 | 0 |
| IRS990/AdvertisingGrp/ManagementAndGeneralAmt | 0 | 27951 |
| IRS990/AdvertisingGrp/ProgramServicesAmt | 0 | 0 |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 27951 |
| IRS990/AllOtherContributionsAmt | 0 | 353891 |
| IRS990/AllOtherExpensesGrp/FundraisingAmt | 0 | 0 |
| IRS990/AllOtherExpensesGrp/ManagementAndGeneralAmt | 0 | 38496 |
| IRS990/AllOtherExpensesGrp/ProgramServicesAmt | 0 | 0 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 38496 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | true |
| IRS990/AuditCommitteeInd | 0 | true |
| IRS990/BooksInCareOfDetail/PersonNm | 0 | Marissa Ybarbo |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 2106156544 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 8565 Ewing Halsell Drive |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | San Antonio |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | TX |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 782293718 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | false |
| IRS990/BusinessRlnWithFamMemInd | 0 | false |
| IRS990/BusinessRlnWithOrgMemInd | 0 | false |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 499904 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 946466 |
| IRS990/ChangeToOrgDocumentsInd | 0 | false |
| IRS990/CollectionsOfArtInd | 0 | false |
| IRS990/CompCurrentOfcrDirectorsGrp/FundraisingAmt | 0 | 0 |
| IRS990/CompCurrentOfcrDirectorsGrp/ManagementAndGeneralAmt | 0 | 344758 |
| IRS990/CompCurrentOfcrDirectorsGrp/ProgramServicesAmt | 0 | 0 |
| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 344758 |
| IRS990/CompensationFromOtherSrcsInd | 0 | false |
| IRS990/CompensationProcessCEOInd | 0 | true |
| IRS990/CompensationProcessOtherInd | 0 | true |
| IRS990/ConflictOfInterestPolicyInd | 0 | true |
| IRS990/ConservationEasementsInd | 0 | false |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | false |
| IRS990/CreditCounselingInd | 0 | false |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 353891 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 368361 |
| IRS990/CYInvestmentIncomeAmt | 0 | 1092657 |
| IRS990/CYOtherExpensesAmt | 0 | 1087494 |
| IRS990/CYOtherRevenueAmt | 0 | 72587 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 3287611 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | 438009 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 2912882 |
| IRS990/CYTotalExpensesAmt | 0 | 4368737 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 0 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 4806746 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | false |
| IRS990/DeductibleArtContributionInd | 0 | false |
| IRS990/DeductibleNonCashContriInd | 0 | false |
| IRS990/DeferredRevenueGrp/BOYAmt | 0 | 207962 |
| IRS990/DeferredRevenueGrp/EOYAmt | 0 | 186614 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | false |
| IRS990/DepreciationDepletionGrp/FundraisingAmt | 0 | 0 |
| IRS990/DepreciationDepletionGrp/ManagementAndGeneralAmt | 0 | 0 |
| IRS990/DepreciationDepletionGrp/ProgramServicesAmt | 0 | 122752 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 122752 |
| IRS990/Desc | 0 | The Winston School San Antonio organizes and maintains an educational program and curriculum for students, grades K-12, who have been diagnosed with specific learning needs. The school served an average of 145 students for this past school year. |
| IRS990/DescribedInSection501c3Ind | 0 | true |
| IRS990/DisregardedEntityInd | 0 | false |
| IRS990/DocumentRetentionPolicyInd | 0 | true |
| IRS990/DonorAdvisedFundInd | 0 | false |
| IRS990/DonorRestrictionNetAssetsGrp/BOYAmt | 0 | 3130819 |
| IRS990/DonorRestrictionNetAssetsGrp/EOYAmt | 0 | 3878111 |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | true |
| IRS990/ElectionOfBoardMembersInd | 0 | false |
| IRS990/EmployeeCnt | 0 | 76 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | true |
| IRS990/EngagedInExcessBenefitTransInd | 0 | false |
| IRS990/ExpenseAmt | 0 | 2973086 |
| IRS990/FamilyOrBusinessRlnInd | 0 | true |
| IRS990/FederalGrantAuditRequiredInd | 0 | false |
| IRS990/FeesForServicesAccountingGrp/FundraisingAmt | 0 | 0 |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 20500 |
| IRS990/FeesForServicesAccountingGrp/ProgramServicesAmt | 0 | 0 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 20500 |
| IRS990/FeesForServicesLegalGrp/FundraisingAmt | 0 | 0 |
| IRS990/FeesForServicesLegalGrp/ManagementAndGeneralAmt | 0 | 74367 |
| IRS990/FeesForServicesLegalGrp/ProgramServicesAmt | 0 | 0 |
| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 74367 |
| IRS990/ForeignActivitiesInd | 0 | false |
| IRS990/ForeignFinancialAccountInd | 0 | false |
| IRS990/ForeignOfficeInd | 0 | false |
| IRS990/Form8282PropertyDisposedOfInd | 0 | false |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 3.00 |
| 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/AverageHoursPerWeekRt | 11 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 12 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 13 | 40.00 |
| 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/IndividualTrusteeOrDirectorInd | 9 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 10 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 11 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 12 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 4 | X |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 0 | 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/OtherCompensationAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 13 | 118108 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | William Carrington |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | DrJulia CarbajalED |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | Carol Zernial |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | Katherine Korbell Brown |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | Michael Calloway |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | Tracy Egan-Calloway |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | Nancy Rivers Dunson |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | Arnold Espe |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | Brett Morgan |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | Patrick PerronCPA |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | Amy Perry |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | Julie Truss |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 12 | Mrs Margie Warren |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 13 | Charles J Karulak |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 13 | 226650 |
| 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/ReportableCompFromRltdOrgAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 13 | 0 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | Chair |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | Vice Chair |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | Secretary |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | Treasurer |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 10 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 11 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 12 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 13 | Educational Headmaster |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | true |
| IRS990/FormationYr | 0 | 1989 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | false |
| IRS990/FSAuditedBasisGrp/SeparateBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | true |
| IRS990/FundraisingActivitiesInd | 0 | true |
| IRS990/FundraisingDirectExpensesAmt | 0 | 38759 |
| IRS990/FundraisingGrossIncomeAmt | 0 | 111346 |
| IRS990/GamingActivitiesInd | 0 | false |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 13 |
| IRS990/GrantAmt | 0 | 368361 |
| IRS990/GrantsToDomesticOrgsGrp/ProgramServicesAmt | 0 | 368361 |
| IRS990/GrantsToDomesticOrgsGrp/TotalAmt | 0 | 368361 |
| IRS990/GrantsToIndividualsInd | 0 | true |
| IRS990/GrantsToOrganizationsInd | 0 | false |
| IRS990/GrantToRelatedPersonInd | 0 | false |
| IRS990/GrossReceiptsAmt | 0 | 4845505 |
| IRS990/GroupReturnForAffiliatesInd | 0 | false |
| IRS990/IncludeFIN48FootnoteInd | 0 | true |
| IRS990/IndependentAuditFinclStmtInd | 0 | true |
| IRS990/IndependentVotingMemberCnt | 0 | 13 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 1 |
| IRS990/IndoorTanningServicesInd | 0 | false |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InfoInScheduleOPartXIInd | 0 | X |
| IRS990/InformationTechnologyGrp/FundraisingAmt | 0 | 0 |
| IRS990/InformationTechnologyGrp/ManagementAndGeneralAmt | 0 | 18466 |
| IRS990/InformationTechnologyGrp/ProgramServicesAmt | 0 | 0 |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 18466 |
| IRS990/InsuranceGrp/FundraisingAmt | 0 | 0 |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 84222 |
| IRS990/InsuranceGrp/ProgramServicesAmt | 0 | 0 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 84222 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 0 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 1092657 |
| IRS990/InvestmentIncomeGrp/UnrelatedBusinessRevenueAmt | 0 | 0 |
| IRS990/InvestmentInJointVentureInd | 0 | false |
| IRS990/InvestmentsPubTradedSecGrp/BOYAmt | 0 | 8234442 |
| IRS990/InvestmentsPubTradedSecGrp/EOYAmt | 0 | 6603135 |
| IRS990/IRPDocumentCnt | 0 | 3 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 3274181 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 9251791 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 10684473 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 13958654 |
| 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 | true |
| IRS990/MinutesOfGoverningBodyInd | 0 | true |
| IRS990/MissionDesc | 0 | The Winston School San Antonio provides a personalized college preparatory education to students with high potential and identified learning differences for grades K-12. A Winston School graduate is confident, well-rounded, and a long-life self advocate. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | false |
| IRS990/MoreThan5000KToOrgInd | 0 | false |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 16979341 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 17911540 |
| IRS990/NetIncmFromFundraisingEvtGrp/ExclusionAmt | 0 | 72587 |
| IRS990/NetIncmFromFundraisingEvtGrp/TotalRevenueColumnAmt | 0 | 72587 |
| IRS990/NetIncmFromFundraisingEvtGrp/UnrelatedBusinessRevenueAmt | 0 | 0 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 13848522 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 14033429 |
| IRS990/NondeductibleContributionsInd | 0 | false |
| IRS990/OccupancyGrp/FundraisingAmt | 0 | 0 |
| IRS990/OccupancyGrp/ManagementAndGeneralAmt | 0 | 50056 |
| IRS990/OccupancyGrp/ProgramServicesAmt | 0 | 58206 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 108262 |
| IRS990/OfficeExpensesGrp/FundraisingAmt | 0 | 0 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 244553 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 0 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 244553 |
| IRS990/OfficerMailingAddressInd | 0 | false |
| IRS990/OperateHospitalInd | 0 | false |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherChangesInNetAssetsAmt | 0 | 494190 |
| IRS990/OtherEmployeeBenefitsGrp/FundraisingAmt | 0 | 0 |
| IRS990/OtherEmployeeBenefitsGrp/ManagementAndGeneralAmt | 0 | 82489 |
| IRS990/OtherEmployeeBenefitsGrp/ProgramServicesAmt | 0 | 102162 |
| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 184651 |
| IRS990/OtherExpensesGrp/Desc | 0 | Instructional Supplies & Sevice |
| IRS990/OtherExpensesGrp/Desc | 1 | Auxilary Supplies & Sevice |
| IRS990/OtherExpensesGrp/Desc | 2 | Maintenance |
| IRS990/OtherExpensesGrp/Desc | 3 | Professional Development |
| IRS990/OtherExpensesGrp/FundraisingAmt | 0 | 0 |
| IRS990/OtherExpensesGrp/FundraisingAmt | 1 | 0 |
| IRS990/OtherExpensesGrp/FundraisingAmt | 2 | 0 |
| IRS990/OtherExpensesGrp/FundraisingAmt | 3 | 0 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 0 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 1 | 0 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 2 | 0 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 3 | 0 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 200614 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 44505 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 2 | 98985 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 3 | 3821 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 200614 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 44505 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 98985 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 3821 |
| IRS990/OtherLiabilitiesGrp/BOYAmt | 0 | 488900 |
| IRS990/OtherLiabilitiesGrp/EOYAmt | 0 | 200400 |
| IRS990/OtherSalariesAndWagesGrp/FundraisingAmt | 0 | 0 |
| IRS990/OtherSalariesAndWagesGrp/ManagementAndGeneralAmt | 0 | 334845 |
| IRS990/OtherSalariesAndWagesGrp/ProgramServicesAmt | 0 | 1769908 |
| IRS990/OtherSalariesAndWagesGrp/TotalAmt | 0 | 2104753 |
| IRS990/OtherWebsiteInd | 0 | X |
| IRS990/PartialLiquidationInd | 0 | false |
| IRS990/PayPremiumsPrsnlBnftCntrctInd | 0 | false |
| IRS990/PayrollTaxesGrp/FundraisingAmt | 0 | 0 |
| IRS990/PayrollTaxesGrp/ManagementAndGeneralAmt | 0 | 55738 |
| IRS990/PayrollTaxesGrp/ProgramServicesAmt | 0 | 137836 |
| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 193574 |
| IRS990/PensionPlanContributionsGrp/FundraisingAmt | 0 | 0 |
| IRS990/PensionPlanContributionsGrp/ManagementAndGeneralAmt | 0 | 19210 |
| IRS990/PensionPlanContributionsGrp/ProgramServicesAmt | 0 | 65936 |
| IRS990/PensionPlanContributionsGrp/TotalAmt | 0 | 85146 |
| IRS990/PledgesAndGrantsReceivableGrp/BOYAmt | 0 | 907974 |
| IRS990/PledgesAndGrantsReceivableGrp/EOYAmt | 0 | 521192 |
| IRS990/PoliticalCampaignActyInd | 0 | false |
| IRS990/PrepaidExpensesDefrdChargesGrp/BOYAmt | 0 | 15805 |
| IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt | 0 | 20570 |
| IRS990/PrincipalOfficerNm | 0 | Charles J Karulak EdD |
| IRS990/ProfessionalFundraisingInd | 0 | false |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 0 | 611600 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 1 | 611710 |
| IRS990/ProgramServiceRevenueGrp/Desc | 0 | Tuition And Fees |
| IRS990/ProgramServiceRevenueGrp/Desc | 1 | Auxilary Services |
| IRS990/ProgramServiceRevenueGrp/ExclusionAmt | 0 | 0 |
| IRS990/ProgramServiceRevenueGrp/ExclusionAmt | 1 | 0 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 0 | 3132246 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 1 | 155365 |
| IRS990/ProgramServiceRevenueGrp/UnrelatedBusinessRevenueAmt | 0 | 0 |
| IRS990/ProgramServiceRevenueGrp/UnrelatedBusinessRevenueAmt | 1 | 0 |
| IRS990/ProhibitedTaxShelterTransInd | 0 | false |
| IRS990/PYContributionsGrantsAmt | 0 | 387897 |
| IRS990/PYExcessBenefitTransInd | 0 | false |
| IRS990/PYGrantsAndSimilarPaidAmt | 0 | 495016 |
| IRS990/PYInvestmentIncomeAmt | 0 | 225530 |
| IRS990/PYOtherExpensesAmt | 0 | 808409 |
| IRS990/PYOtherRevenueAmt | 0 | 46578 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 4075652 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | 2457 |
| IRS990/PYSalariesCompEmpBnftPaidAmt | 0 | 3429775 |
| IRS990/PYTotalExpensesAmt | 0 | 4733200 |
| IRS990/PYTotalRevenueAmt | 0 | 4735657 |
| IRS990/QuidProQuoContributionsInd | 0 | false |
| IRS990/RcvFndsToPayPrsnlBnftCntrctInd | 0 | false |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | 438009 |
| IRS990/RegularMonitoringEnfrcInd | 0 | true |
| IRS990/RelatedEntityInd | 0 | true |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | false |
| IRS990/ReportInvestmentsOtherSecInd | 0 | false |
| IRS990/ReportLandBuildingEquipmentInd | 0 | true |
| IRS990/ReportOtherAssetsInd | 0 | false |
| IRS990/ReportOtherLiabilitiesInd | 0 | true |
| IRS990/ReportProgramRelatedInvstInd | 0 | false |
| IRS990/RevenueAmt | 0 | 3287611 |
| IRS990ScheduleA/InvestmentIncomeCYPct | 0 | 0 |
| IRS990ScheduleA/OtherSupportSumAmt | 0 | 0 |
| IRS990ScheduleA/PublicSupportCY170Pct | 0 | 0 |
| IRS990ScheduleA/PublicSupportCY509Pct | 0 | 0 |
| IRS990ScheduleA/PublicSupportTotal509Amt | 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 | true |
| IRS990ScheduleD/BuildingsGrp/BookValueAmt | 0 | 2207611 |
| IRS990ScheduleD/BuildingsGrp/DepreciationAmt | 0 | 1633224 |
| IRS990ScheduleD/BuildingsGrp/OtherCostOrOtherBasisAmt | 0 | 3840835 |
| IRS990ScheduleD/CYEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 394748 |
| IRS990ScheduleD/CYEndwmtFundGrp/EndYearBalanceAmt | 0 | 547004 |
| IRS990ScheduleD/CYEndwmtFundGrp/InvestmentEarningsOrLossesAmt | 0 | 152256 |
| IRS990ScheduleD/CYMinus1YrEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 403281 |
| IRS990ScheduleD/CYMinus1YrEndwmtFundGrp/EndYearBalanceAmt | 0 | 394748 |
| IRS990ScheduleD/CYMinus1YrEndwmtFundGrp/InvestmentEarningsOrLossesAmt | 0 | -8533 |
| IRS990ScheduleD/CYMinus2YrEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 409101 |
| IRS990ScheduleD/CYMinus2YrEndwmtFundGrp/EndYearBalanceAmt | 0 | 403281 |
| IRS990ScheduleD/CYMinus2YrEndwmtFundGrp/InvestmentEarningsOrLossesAmt | 0 | -5820 |
| IRS990ScheduleD/CYMinus3YrEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 361478 |
| IRS990ScheduleD/CYMinus3YrEndwmtFundGrp/EndYearBalanceAmt | 0 | 409101 |
| IRS990ScheduleD/CYMinus3YrEndwmtFundGrp/InvestmentEarningsOrLossesAmt | 0 | 47623 |
| IRS990ScheduleD/CYMinus4YrEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 325758 |
| IRS990ScheduleD/CYMinus4YrEndwmtFundGrp/EndYearBalanceAmt | 0 | 361478 |
| IRS990ScheduleD/CYMinus4YrEndwmtFundGrp/GrantsOrScholarshipsAmt | 0 | 20430 |
| IRS990ScheduleD/CYMinus4YrEndwmtFundGrp/InvestmentEarningsOrLossesAmt | 0 | 56150 |
| IRS990ScheduleD/DonatedServicesAndUseFcltsAmt | 0 | 368000 |
| IRS990ScheduleD/DonatedServicesUseFcltsAmt | 0 | 368000 |
| IRS990ScheduleD/EndowmentsHeldRelatedOrgInd | 0 | false |
| IRS990ScheduleD/EndowmentsHeldUnrelatedOrgInd | 0 | true |
| IRS990ScheduleD/EquipmentGrp/BookValueAmt | 0 | 22289 |
| IRS990ScheduleD/EquipmentGrp/DepreciationAmt | 0 | 1010069 |
| IRS990ScheduleD/EquipmentGrp/OtherCostOrOtherBasisAmt | 0 | 1032358 |
| IRS990ScheduleD/ExpensesNotReportedAmt | 0 | 368000 |
| IRS990ScheduleD/ExpensesSubtotalAmt | 0 | 4368737 |
| IRS990ScheduleD/LandGrp/BookValueAmt | 0 | 0 |
| IRS990ScheduleD/LandGrp/InvestmentCostOrOtherBasisAmt | 0 | 0 |
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