Mission
WINCHESTER THURSTON SCHOOL ENGAGES EACH STUDENT IN A CHALLENGING AND INSPIRING LEARNING PROCESS THAT DEVELOPS THE MIND, MOTIVATES THE PASSION TO ACHIEVE, AND CULTIVATES THE CHARACTER TO SERVE.
Public Charity
WINCHESTER THURSTON SCHOOL
WINCHESTER THURSTON SCHOOL, of PITTSBURGH, PA, is a Public Charity tracked in Imperigo's IRS 990 database. The 2025 filing shows $29.7M in revenue, $28.6M in expenses, $62.5M in total assets. 52 publicly reported grants to this organization, totaling roughly $2.1M, appear in IRS filings.
EIN: 251030691
PITTSBURGH, PA
Latest filing: 2025
Total Revenue$29.7M
Total Expenses$28.6M
Total Assets$62.5M
Grant Records52
Funding Total$2.1M
Filing Years2021–2025
Sample Grants Received
ENVIRONMENT, ANIMALS
$215,183
PENNSYLVANIA EITC SCHOLARSHIPS
$141,800
ELEMENTARY AND SECONDARY SCHOOLS
$41,327
For grant recipient's exempt purposes
$31,902
EDUCATION
$28,800
Showing up to 5 of 52 total records — full history available with membership.
Officers & Directors
VICE PRESIDENT
Abigail Robinson Foster
INTERIM ASSISTANT HEAD OF SCHOOL FOR TEACHING AND
Amanda Welsh
TRUSTEE
Andrew Santelli
TRUSTEE
Brandilyn Y Dumas
EMERITUS
Carole Oswald Markus
DIRECTOR OF UPPER SCHOOL
Dana Kooistra
Officer compensation and complete director data available with membership.
Top Grant Purposes
Financial Trends
| Year | Revenue | Expenses | Assets |
|---|---|---|---|
| 2025 | $29.7M | $28.6M | $62.5M |
| 2024 | $30.2M | $27.2M | $58.7M |
| 2023 | $25.4M | $24.5M | $54.4M |
| 2022 | $27.5M | $22.4M | $52.1M |
| 2021 | $24.0M | $21.8M | $52.3M |
Between 2021 and 2025, reported annual revenue grew from $24.0M to $29.7M (+24%), with total assets most recently reported at $62.5M.
Interactive year-over-year charts and full filing details available with membership.