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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 California Montessori Project Deirdre Slamkowski

Deirdre Slamkowski

Highest compensated employee

Principal at California Montessori Project

Fiscal year ended June 30, 2021. Published on January 25, 2026.

$124,200
2021

Total compensation

Deirdre Slamkowski has been listed as an employee of California Montessori Project in Form 990 filings since fiscal year 2018. Total compensation for Deirdre Slamkowski has increased by 0.7% from 2018 to 2021.

Annual compensation details

$124,200
-6.1%
Principal
2021
$125k org
40 hrs/wk
$132,328
+7.8%
Programs Director
2020
$126k org
40 hrs/wk
$7k other
--
$122,799
-0.5%
Programs Director

Total compensation by year

Compare the compensation of Deirdre Slamkowski to:

2021

Other employees at California Montessori Project

Brett Barley
Executive Director
$258,228
$235,203 from orgNo related comp$23,025 other
Kim Zawilski
Principal
$140,135
$129,756 from orgNo related comp$10,379 other
Bernadette Evangelista
Principal
$127,321
$117,571 from orgNo related comp$9,750 other
Laurien Dusharme-Spiller
Principal
$125,305
$113,101 from orgNo related comp$12,204 other
Joanna Pastor
Section 504 Coordinator
$121,904
$110,769 from orgNo related comp$11,135 other
Carrie Klagenberg
Secretary
$53,551
$53,551 from orgNo related compNo other comp
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Revisions to this profile

January 25, 2026:
2021 California Montessori Project 990 published
January 24, 2026:
2020 California Montessori Project 990 published
January 24, 2026:
2019 California Montessori Project 990 published

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2019
$116k org
40 hrs/wk
$7k other
--
$123,396
Programs Director
2018
$110k org
40 hrs/wk
$14k other
--