St Marks School of Texas is a 501(c)(3) organization based in Dallas, Texas, registered in 1952, with $55,629,895 in FY2023 revenue. CharityIndex grades it A, and it directs about 82% of spending to programs.
Revenue (FY2023)
$55.6M
▼ 16.4% vs prior year
Education median: $200K
Expenses (FY2023)
$48.4M
Net assets
$358.7M
Employees
305
Measures how much of every dollar spent actually reaches programs, plus what it costs to raise $100 of donations. The worse of the two measures sets the letter (85%+ to programs is an A; under $15 to raise $100 is an A), averaged over the three most recent filings. For St Marks School of Texas: 82% to programs · $12 to raise $100 earns a A on this criterion. See the exact thresholds →
Measures whether the organization is built to last: how many months its reserves would cover expenses (3+ months earns an A-range score, but hoarding 5+ years of budget is capped) and whether it runs a surplus or a deficit. For St Marks School of Texas: 89 mo reserves · +13% margin earns a B+ on this criterion. See the exact thresholds →
Checks how the organization is run, from its own Form 990: an independent board majority, a board of five or more, conflict-of-interest, whistleblower and document-retention policies, and independently audited financials. The share of disclosed checks that pass sets the letter. For St Marks School of Texas: 6 of 6 checks met earns a A+ on this criterion. See the exact thresholds →
Counts five disclosure signals: a recent filing, a mission statement, program descriptions, a listed website, and the full expense breakdown. More disclosure, better letter. For St Marks School of Texas: 5 of 5 disclosure signals earns a A+ on this criterion. See the exact thresholds →
Show this grade on your website
A live seal — it updates automatically when the grade changes and links donors to this verified profile.
St. mark's school of texas, is a private, non-profit, non-sectarian, independent, college preparatory day school for boys grades 1 through 12. the school aims to afford its students well-rounded physical, intellectual and spiritual education.
Student activities - wide ranging expenses related to noninstructional activities of students including commencement exercises, student council expenses, and class field trips.
New student admission fees - expenses related to the matriculationof students to the school.
Extended day - after school care for boys in grades 1 through 4. the program has an enrollment of approximately 60 boys.
Revenue grew from $32.8M (FY2013) to $55.6M (FY2023) across 11 reported years.
Financial snapshot
Operating margin
13.1%
Revenue exceeded expenses in the latest fiscal year.
Total assets
$402.0M
Total liabilities
$43.3M
Net assets
$358.7M
Salaries & benefits
$27.1M
56% of expenses
Board members
51
51 independent
| Fiscal year | Revenue | Expenses | Net assets | Total assets | Form |
|---|---|---|---|---|---|
| 2023 | $55,629,895▼16.4% | $48,368,309▲5.6% | $358,700,951▲9.0% | $401,975,830▲9.6% | 990 |
| 2022 | $66,581,417▼10.9% | $45,822,973▲3.7% | $328,962,526▲13.6% | $366,637,193▲13.5% | 990 |
| 2021 | $74,767,841▲89.1% | $44,168,005▲3.8% | $289,589,170▲5.3% | $323,103,839▲5.0% | 990 |
| 2020 | $39,530,532▼13.5% | $42,548,298▲14.0% | $274,934,395▲13.8% | $307,638,954▲11.7% | 990 |
| 2019 | $45,686,307▲10.3% | $37,337,037▲1.5% | $241,661,183▲3.0% | $275,365,523▲3.3% | 990 |
| 2018 | $41,420,185▼0.6% | $36,779,693▲0.9% | $234,726,501▲2.3% | $266,550,130▲4.5% | 990 |
| 2017 | $41,651,672▼20.1% | $36,464,052▲8.8% | $229,534,159▲4.1% | $255,046,416▲4.5% | 990 |
| 2016 | $52,126,497▲42.2% | $33,501,073▲1.4% | $220,599,409▲15.4% | $244,049,412▲15.2% | 990 |
| 2015 | $36,664,258▲6.4% | $33,028,007▲6.9% | $191,116,736▼3.0% | $211,824,683▼6.8% | 990 |
| 2014 | $34,449,577▲5.1% | $30,902,584▲2.8% | $196,987,392▼1.0% | $227,159,250▼1.0% | 990 |
| 2013 | $32,790,191 | $30,061,999▼2.4% | $199,066,476▲9.0% | $229,454,827▲6.0% | 990 |
| 2012 | — | $30,803,130▲6.2% | $182,550,554▲10.1% | $216,561,710▲7.0% | 990 |
| 2011 | — | $28,998,304▲0.9% | $165,751,443▲2.6% | $202,342,336▲0.7% | 990 |
| 2010 | — | $28,753,497▲1.8% | $161,540,250▲14.4% | $201,006,131▲6.9% | 990 |
| 2009 | — | $28,247,719 | $141,176,069 | $188,035,595 | 990 |
Original Form 990 PDFs (the Form column) are served by ProPublica Nonprofit Explorer, as filed with the IRS. Create a free account to download the CSV report.
Highest-paid: David Dini — $987,771 (2.04% of total expenses)
| Name | Title | Hours/week | Compensation |
|---|---|---|---|
| David Dini | Headmaster | 40 | $987,771 |
| John Ashton | Associate Headmaster | 40 | $478,004 |
| Suzanne Townsend | Chief Financial Officer | 40 | $346,369 |
| John S Jolly | Asst. Headmaster For Exter | 40 | $303,898 |
| Timothy Crouch | Director of Development | 40 | $198,579 |
| James E Windlinger Jr | Controller | 40 | $185,572 |
| Mark Webb | Director of Physical Plant | 40 | $183,511 |
| Dean Clayman | Head of Middle School | 40 | $181,398 |
| Thomas Eckel | Chief Technology Officer | 40 | $175,678 |
| Alan C Schoellkopf Jr | Trustee | 2 | — |
| Alenda M Omonije | Trustee | 2 | — |
| A Michael Warnecke | Trustee | 2 | — |
| Beau H Harbour | Treasurer | 2 | — |
| Bradford R Hirsch | Trustee | 2 | — |
| Brian S Tyler | Trustee | 2 | — |
| C David Sammons | Trustee | 2 | — |
| Chandra Dhandapani | Trustee | 2 | — |
| Chris E J Lee | Trustee | 2 | — |
| Christopher S Flanagan | Trustee | 2 | — |
| Craig M Meyers | Trustee | 2 | — |
| Contractor | Services | Paid |
|---|---|---|
| Hc Beck Ltd | Construction Services | $15,386,433 |
| Stephen Miller Jr | Custodial/janitorial Services | $589,970 |
| Axxys Technologies Inc | It Management/support | $558,118 |
| Wilcoxson Ag LLC | Landscape Services | $246,752 |
| Avalon Motorcoaches LLC | Charter Transportation Services | $222,933 |
174 grants to St Marks School of Texas totaling $18.1M, reported by foundations on their Schedule I filings — showing the 15 most recent.
| Grantmaker | Purpose | Year | Amount |
|---|---|---|---|
| Communities Foundation of Texas | This grant is designated for general support. | 2024 | $250,395 |
| National Christian Charitable Foundation | Education | 2024 | $169,500 |
| The Dallas Foundation | General support | 2024 | $121,000 |
| American Online Giving Foundation Inc | General support | 2024 | $110,337 |
| Morgan Stanley Global Impact Funding Trust Inc | Unrestricted general support | 2024 | $50,000 |
| Raymond James Charitable Endowment Fund | General support | 2024 | $38,600 |
| Morgan Stanley Global Impact Funding Trust Inc | Unrestricted general support | 2024 | $25,000 |
| Gs Donor Advised Philanthropy Fund For Wealth Management Inc | Education | 2024 | $21,000 |
| Charities Aid Foundation America | Charitable donation | 2024 | $16,066 |
| Community Foundation of North Texas | For the athletic complex project. gift to be acknowledged as from mr. blake h. estess '87 & mrs. sandra estess in honor of coach dwight phillips | 2024 | $11,131 |
| Morgan Stanley Global Impact Funding Trust Inc | Unrestricted general support | 2024 | $10,001 |
| Greater Horizons | Education | 2024 | $10,000 |
| Greater Houston Community Foundation | Educational | 2024 | $8,000 |
| Ayco Charitable Foundation | Education | 2024 | $6,000 |
| Donor Advised Charitable Giving | Education | 2023 | $688,110 |
Explore more
Data for St Marks School of Texas (EIN 75-0827460) comes from the IRS Business Master File and e-filed Form 990 returns, via CharityIndex. Figures reflect what the organization reported to the IRS for each fiscal year.