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Nonprofit · EIN 04-2321011

CAMBRIDGE MONTESSORI SCHOOL INC

Tax-exempt · CAMBRIDGE, MA 02138

Financials

$3.7M$5.2M2022$5.6M$5.8M2023$5.7M$5.9M2024
Revenue Expenses · by fiscal year end
Financials of CAMBRIDGE MONTESSORI SCHOOL INC by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
June 30, 2025990$5,690,873$5,944,049-$253,176$6,333,721$5,201,085$1,132,636
June 30, 2024990$5,589,142$5,797,162-$208,020$6,773,401$5,387,589$1,385,812
June 30, 2023990$3,669,519$5,166,246-$1,496,727$6,871,771$5,277,939$1,593,832
Financial details: 990 for the year ended June 30, 2025

Revenue

Contributions, gifts and grants
$83,547
of which government grants
$24,000
Program service revenue
$5,423,300
Investment income
$135,625
Net income from fundraising events
$48,401
Other revenue
$48,401

Expenses

Grants and similar amounts paid
$553,533
Other salaries and wages
$3,334,363
Salaries, compensation and benefits (total)
$3,957,573
Professional fundraising fees
$0
Legal fees
$10,484
Accounting fees
$25,655
Occupancy
$504,435
Depreciation
$78,762
Program services (functional)
$5,025,167
Management and general (functional)
$872,203
Fundraising (functional)
$46,679

Balance sheet and other

Total assets, start of year
$6,773,401
Total assets, end of year
$6,333,721
Total liabilities, end of year
$5,201,085
Net assets, end of year
$1,132,636
Land, buildings and equipment
$1,619,651
Publicly traded securities
$41,842
Net assets without donor restrictions
$1,132,636
Gross receipts
$5,713,909
Employees
89
Volunteers
0
Year formed
1964
State of legal domicile
MA

From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.

Officers, directors and key employees

As listed on the 990 for the year ended June 30, 2025, highest compensation first.

NameTitleHours / weekCompensation
Sue AngelidesHead of School
Officer
40$341,792
Nikki JacobsCFO
Officer
40$192,241
Anne LawsonTrustee
Trustee or director, Officer
2$0
Michael FlanneryChair
Trustee or director, Officer
2$0
Sophie EmperadorTrustee
Trustee or director
2$0
Shweta GadgilTrustee
Trustee or director
2$0
Abe GoreTrustee
Trustee or director
2$0
Alfred DingTrustee
Trustee or director
2$0
Eswar ManiTrustee
Trustee or director
2$0
Courtney SladeTrustee
Trustee or director
1$0
Mike MoranTreasurer
Trustee or director
1$0
Nate SwiftTrustee
Trustee or director
2$0
Manuel BertolottoTrustee
Trustee or director
2$0
990 for the year ended June 30, 2024: 14 people
NameTitleHours / weekCompensation
Sue AngelidesHead of School
Officer
40$275,000
Nikki JacobsCFO
Officer
40$151,544
Allison LynchAssistant Head of School
Officer
40$141,377
Maggie MoyersStaff
Highest-paid employee
40$116,597
Anne LawsonTreasurer
Trustee or director, Officer
2$0
Robert CookeSecretary
Trustee or director, Officer
2$0
Michael FlanneryChair
Trustee or director, Officer
2$0
Todd GouletTrustee
Trustee or director
2$0
John SweeneyTrustee
Trustee or director
2$0
Amelia NewburyTrustee
Trustee or director
2$0
Sara OntiverosTrustee
Trustee or director
2$0
Mike CraggTrustee
Trustee or director
2$0
Courtney SladeTrustee
Trustee or director
1$0
Mike MoranTrustee
Trustee or director
1$0
990 for the year ended June 30, 2023: 13 people
NameTitleHours / weekCompensation
Nikki JacobsCFO
Officer
40$152,351
Allison LynchAssistant Head of School
Officer
40$117,103
Debra SmithHead of Admissions
Highest-paid employee
40$100,964
Anne LawsonTreasurer
Trustee or director, Officer
2$0
Robert CookeClerk
Trustee or director, Officer
2$0
Michael FlanneryPresident
Trustee or director, Officer
2$0
Todd GouletTrustee
Trustee or director
2$0
John SweeneyTrustee
Trustee or director
2$0
Amelia NewburyTrustee
Trustee or director
2$0
Sarah OntiverosTrustee
Trustee or director
2$0
Jill BeckerTrustee
Trustee or director
2$0
Mike CraggTrustee
Trustee or director
2$0
Sue AngelidesHead of School
Officer
40$0

Address and contacts

Address (IRS master file)
161 GARDEN ST, CAMBRIDGE, MA 02138-1240
Principal officer (990 for 2024)
Nikki Jacobs, 129 Sherman Street, Cambridge, MA 02140
Signed the 990
Nikki Jacobs, CFO
Phone
(617) 492-3410
Return prepared by
LCW CPAs

Mission

AT CAMBRIDGE MONTESSORI SCHOOL, WE PARTNER WITH OUR DIVERSE COMMUNITY, USING AUTHENTIC MONTESSORI PRINCIPLES TO REVEAL EACH CHILD'S INNATE LOVE OF LEARNING AND PREPARE OUR CHILDREN TO THRIVE IN A COMPLEX WORLD.

990 for the year ended June 30, 2025

Program accomplishments

  • TODDLER THROUGH MIDDLE SCHOOL EDUCATION PROGRAMS TO CHILDREN RANGING FROM 21 MONTHS TO 14 YEARS OLD, ALONG WITH DAY CARE SERVICES.
    Expenses $5,025,167 · grants $553,533 · revenue $5,423,300

What it must file and when

IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. Its accounting year ends in June, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025June 30, 2026November 16, 2026Not due yet
2024June 30, 2025November 17, 2025990 on file
2023June 30, 2024November 15, 2024990 on file

IRS record

EIN
04-2321011
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
School
Donations deductible (Pub 78)
Public charity, 50% deduction limit
Exempt since
1964
Accounting year ends
June
Files
Form 990 or 990-EZ
Assets (IRS master file)
$6,333,721
Income (IRS master file)
$5,713,909

Filing history

FormYear endedRevenueExpensesAssetsReturn
990June 2025$5,690,873$5,944,049$6,333,721IRS
990June 2024$5,589,142$5,797,162$6,773,401IRS
990June 2023$3,669,519$5,166,246$6,871,771XML
990-TJune 2023–––IRS
990June 2022$6,512,909$6,013,101$12,137,807IRS
990-TJune 2022–––IRS
990June 2021–––IRS
990-TJune 2021–––IRS
990June 2020–––IRS
990June 2019–––IRS
990June 2018–––IRS

990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 04-2321011).

Questions about CAMBRIDGE MONTESSORI SCHOOL INC

What is the EIN of CAMBRIDGE MONTESSORI SCHOOL INC?
The employer identification number (EIN) of CAMBRIDGE MONTESSORI SCHOOL INC is 04-2321011.
Is CAMBRIDGE MONTESSORI SCHOOL INC tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1964.
Are donations to CAMBRIDGE MONTESSORI SCHOOL INC tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does CAMBRIDGE MONTESSORI SCHOOL INC file?
Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
When is the next return of CAMBRIDGE MONTESSORI SCHOOL INC due?
The return for tax year 2025 (the year ending June 30, 2026) is due November 16, 2026. Form 8868 extends it by six months; the 990-N cannot be extended.
When did CAMBRIDGE MONTESSORI SCHOOL INC last file with the IRS?
The latest return in the IRS public files is the 990 for the year ended June 2025.
Who is the principal officer of CAMBRIDGE MONTESSORI SCHOOL INC?
The 990 for the year ended June 30, 2025 names Nikki Jacobs.
Who are the officers and directors of CAMBRIDGE MONTESSORI SCHOOL INC?
The 990 for the year ended June 30, 2025 lists 13 people; 2 received compensation from the organization, the highest $341,792 (Sue Angelides, Head of School).
How much revenue does CAMBRIDGE MONTESSORI SCHOOL INC have?
On its 990 for the year ended June 30, 2025 it reported revenue of $5,690,873, expenses of $5,944,049 and total assets of $6,333,721 at year end.

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