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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 Windsor Street Montessori School Mary Windmiller

Mary Windmiller

OfficerTrustee/director

President and Treasurer at Windsor Street Montessori School

Fiscal year ended May 31, 2023. Published on January 25, 2026.

$29,800
2023

Total compensation

Mary Windmiller has been listed as an employee of Windsor Street Montessori School in Form 990 filings since fiscal year 2017. Total compensation for Mary Windmiller has decreased by 40.4% from 2017 to 2023.

Annual compensation details

$29,800
-43.5%
President and Treasurer
2023
$30k org
50 hrs/wk
$52,700
-0.2%
President and Treasurer
2022
$53k org
50 hrs/wk
$52,800
±0%
President and Treasurer
2021

Total compensation by year

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Revisions to this profile

January 25, 2026:
2023 Windsor Street Montessori School 990 published
January 25, 2026:
2022 Windsor Street Montessori School 990 published
January 24, 2026:
2021 Windsor Street Montessori School 990 published

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$53k org
50 hrs/wk
$52,800
±0%
President and Treasurer
2020
$53k org
50 hrs/wk
$52,800
+0.2%
President and Treasurer
2019
$53k org
50 hrs/wk
$52,700
+5.4%
President and Treasurer
2018
$53k org
50 hrs/wk
$50,000
President and Treasurer
2017
$50k org
50 hrs/wk