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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 Class Size Matters Leonie Haimson

Leonie Haimson

Executive Director at Class Size Matters

Fiscal year ended December 31, 2021. Published on January 25, 2026.

$0
2021

Total compensation

Leonie Haimson has been listed as an employee of Class Size Matters in Form 990 filings since fiscal year 2020.

Annual compensation details

$0
Executive Director
2021
$0
Executive Director
2020

Compare the compensation of Leonie Haimson to:

2021

Other employees at Class Size Matters

Diane Ravitch
Board Member
$0
Cynthia Wachtell
Board Member
$0
Emily Horowitz
Treasurer
$0
Patrick Sullivan
President
$0
Monica Major
Secretary
$0
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Revisions to this profile

January 25, 2026:
2021 Class Size Matters 990 published
January 24, 2026:
2020 Class Size Matters 990 published

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