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Compensation 990 is an independent service that uses public IRS Form 990 filings as its source data. We clean and standardize this information, but the original filings may contain errors or omissions. Years on this site refer to the organization’s fiscal year end date on the filing.

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Employees Winchester Thurston School Dana Kooistra

Dana Kooistra

Highest compensated employee

Upper School Director at Winchester Thurston School

Fiscal year ended June 30, 2024. Published on January 25, 2026.

$140,942

2024

Total compensation

Dana Kooistra has been listed as an employee of Winchester Thurston School in Form 990 filings since fiscal year 2024.

Annual compensation details

$140,942

Upper School Director

2024

$126k

40 hrs/wk

$16k

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Total compensation by year

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Revisions to this profile

January 25, 2026:

2024 Winchester Thurston School 990 published

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2024

Other employees at Winchester Thurston School

Scott Fech

Head of School

$441,614

$383,957 No related comp$57,657

Julia Posteraro

Executive Director of Finance and Operations

$182,377

$131,116 No related comp$51,261

John Charney

Executive Director of Facilities and Renovation

$144,571

$137,432 No related comp$7,139

David Weisbord

College Counseling Director

$141,310

$125,148 No related comp$16,162