- Revenue 2024
- $15,094,740
- Expenses 2024
- $15,254,442
Program services were 76.8% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.
As filed
- Subsection
- 03
- Classification
- 2000
- Street
- 309 W 92ND ST
These codes are the IRS's own and are shown exactly as filed. What each one means is in the Business Master File documentation (opens in a new tab).
Mission and programs · 2024
Mission
WE PREPARE CHILDREN TO BE RESILIENT, CREATIVE AND INDEPENDENT PROBLEM SOLVERS. WE ARE LEADERS IN TEACHING MONTESSORI PRINCIPLES AND INCORPORATE THE BEST PRACTICES OF MODERN EARLY CHILDHOOD EDUCATION IN OUR CLASSROOMS.WEST SIDE MONTESSORI SCHOOL IS A VIBRANT, COLLABORATIVE COMMUNITY OF PASSIONATE TEACHERS, JOYFUL CHILDREN AND ENGAGED PARENTS. OUR DIVERSE COMMUNITY IS A REFLECTION OF THE CITY IN WHICH WE LIVE.
Activities or mission (Part I)
WE PREPARE CHILDREN TO BE RESILIENT, CREATIVE AND INDEPENDENT PROBLEM SOLVERS. WE ARE LEADERS IN TEACHING MONTESSORI PRINCIPLES AND INCORPORATE THE BEST PRACTICES OF MODERN EARLY CHILDHOOD EDUCATION IN OUR CLASSROOMS.
-
THE ORGANIZATION'S PRIMARY EXEMPT PURPOSE AND ITS LARGEST PROGRAM SERVICE, IS TO PROVIDE EARLY EDUCATION TO 150-200 CHILDREN FROM PRE-K THROUGH KINDERGARTEN.
Expenses $10,827,783 · Grants $1,131,388 · Revenue $10,740,565
-
THIS ORGANIZATION ALSO OPERATES A MONTESSORI TEACHER EDUCATION PROGRAM, THE WSMS-TEP PROGRAM, FOR TEACHERS WHO WISH TO OBTAIN THEIR MONTESSORI TEACHING CREDENTIALS.
Expenses $870,900 · Grants $33,300 · Revenue $942,045
-
PROVIDING GENERAL EDUCATION SUPPORT TO UNRELATED ORGANIZATIONS WITHIN THE COMMUNITY.
Expenses $12,425 · Grants $12,425
As filed on the 2024 return. The filer continues this part on Schedule O, which is not shown here.
Officers and directors · 2024
As listed in Part VII of the 2024 return, in the order the filer printed them. Each return names its own; this is not a roster the organization keeps with us.
-
Mimi BassoMIMI BASSO
HEAD OF SCHOOL
- Total calculated
- $534,549
- From this org
- $471,518
- From related orgs
- $0
- Other
- $63,031
- Hours/week
- 40
Schedule J breakdown matched by us
- Base
- $391,518
- Bonus
- $80,000
- Other
- $0
- Deferred
- $44,850
- Nontaxable benefits
- $18,181
- Filer's total
- $534,549
-
Iva MillsIVA MILLS
VICE-PRESIDENT
- Total calculated
- $0
- Hours/week
- 2
-
Dana BlissDANA BLISS
VICE-PRESIDENT
- Total calculated
- $0
- Hours/week
- 2
-
Scott LiSCOTT LI
TREASURER
- Total calculated
- $0
- Hours/week
- 2
-
Tenille Pham SheltonTENILLE PHAM SHELTON
SECRETARY
- Total calculated
- $0
- Hours/week
- 2
-
Michael CapiloutoMICHAEL CAPILOUTO
TRUSTEE
- Total calculated
- $0
- Hours/week
- 2
-
Nikki Chase-LevinNIKKI CHASE-LEVIN
PRESIDENT
- Total calculated
- $0
- Hours/week
- 2
-
Steven HanSTEVEN HAN
TRUSTEE
- Total calculated
- $0
- Hours/week
- 2
-
Geoffrey KarapetyanGEOFFREY KARAPETYAN
TRUSTEE
- Total calculated
- $0
- Hours/week
- 2
-
Ankur KeswaniANKUR KESWANI
TRUSTEE
- Total calculated
- $0
- Hours/week
- 2
-
Kurt MillerKURT MILLER
TRUSTEE
- Total calculated
- $0
- Hours/week
- 2
-
Yasmin NozariYASMIN NOZARI
TRUSTEE
- Total calculated
- $0
- Hours/week
- 2
-
Christina WangCHRISTINA WANG
TRUSTEE
- Total calculated
- $0
- Hours/week
- 2
-
Julia EmanuelJULIA EMANUEL
TRUSTEE
- Total calculated
- $0
- Hours/week
- 2
-
Avner HusenAVNER HUSEN
TRUSTEE
- Total calculated
- $0
- Hours/week
- 2
-
Annie KimANNIE KIM
TRUSTEE
- Total calculated
- $0
- Hours/week
- 2
-
Ellie Burrows GluckELLIE BURROWS GLUCK
PARENT REPRESENTATIVE
- Total calculated
- $0
- Hours/week
- 4
-
Charlene SuCHARLENE SU
TRUSTEE
- Total calculated
- $0
- Hours/week
- 2
-
Kristin CrawfordKRISTIN CRAWFORD
TRUSTEE
- Total calculated
- $0
- Hours/week
- 2
-
Greg FeldmanGREG FELDMAN
TRUSTEE
- Total calculated
- $0
- Hours/week
- 2
-
Elizabeth MartorellaELIZABETH MARTORELLA
TRUSTEE
- Total calculated
- $0
- Hours/week
- 2
-
John Frederick ThyeJOHN FREDERICK THYE
TRUSTEE
- Total calculated
- $0
- Hours/week
- 2
-
Alex WaschALEX WASCH
TRUSTEE
- Total calculated
- $0
- Hours/week
- 2
-
Elizabeth TyndellELIZABETH TYNDELL
TRUSTEE
- Total calculated
- $0
- Hours/week
- 2
-
Jordan BlitzerJORDAN BLITZER
PARENT REPRESENTATIVE
- Total calculated
- $0
- Hours/week
- 4
The first 25 listed. Compensation is as filed in Part VII: reportable pay from this organization and from related organizations, other compensation, and hours per week. The total, marked calculated, is our sum of the three dollar columns, with a blank column counted as $0; the form itself has no total. On a Form 990-EZ the columns are Part IV's instead, and on a Form 990-PF Part VIII's — compensation, contributions to benefit plans, and expense account — and the total sums those. A Schedule J breakdown is as filed: base pay, bonus, other, deferred compensation and nontaxable benefits from this organization, with any from related organizations beside each, and the filer's own total. It is shown with the Part VII listing of the same name on the same return. The form gives no key between the two, so that pairing is ours, and is marked matched by us. Earlier years are each on their own filing page.
Filings
-
2024
- Revenue
- $15,094,740
- Expenses
- $15,254,442
- Contributions
- $2,730,263
- Grants paid
- $1,177,113
-
2023
- Revenue
- $12,664,529
- Expenses
- $13,391,460
- Contributions
- $1,300,316
- Grants paid
- $1,454,788
-
2022
- Revenue
- $11,284,083
- Expenses
- $11,752,766
- Contributions
- $1,110,134
- Grants paid
- $1,547,011
The four totals the IRS asks for on Part I of the Form 990, as filed. A dash means the figure was not present on the return — not that it was zero.
Other returns filed
-
2021 · 990
- Revenue
- $10,367,667
- Expenses
- $10,616,513
- Assets (EOY)
- $34,513,067
-
2020 · 990
- Revenue
- $12,617,803
- Expenses
- $10,250,637
- Assets (EOY)
- $36,738,175
-
2019 · 990
- Revenue
- $10,542,848
- Expenses
- $10,016,105
- Assets (EOY)
- $33,911,523
-
2018 · 990
- Revenue
- $10,058,815
- Expenses
- $10,301,784
- Assets (EOY)
- $34,703,581
-
2017 · 990
- Revenue
- $8,327,876
- Expenses
- $8,587,542
- Assets (EOY)
- $33,849,938
-
2016 · 990
- Revenue
- $8,034,155
- Expenses
- $8,150,274
- Assets (EOY)
- $32,184,705
-
2015 · 990
- Revenue
- $8,347,216
- Expenses
- $7,466,966
- Assets (EOY)
- $30,791,651
-
2014 · 990
- Revenue
- $7,179,585
- Expenses
- $6,759,973
- Assets (EOY)
- $28,881,412
-
2013 · 990
- Revenue
- $6,478,359
- Expenses
- $6,632,380
- Assets (EOY)
- $28,533,661
-
2012 · 990
- Revenue
- not reported
- Expenses
- $6,231,099
- Assets (EOY)
- $26,626,411
Nonprofiteer parses Forms 990, 990-EZ and 990-PF, in a window of recent tax years. These returns are recorded from the IRS e-file index, so their figures were extracted by that index rather than read from the return here — treat them as a different source from the filings above, not as more of the same record. A dash means the index carries no figure; Form 990-T listings carry none at all. Showing the 10 most recent; the API carries the rest.
Grants made
-
BRICK CHURCH SCHOOL
$10,000
2023 EDUCATIONAL PROGRAMMING
-
BRICK CHURCH SCHOOL
$10,000
2024 EDUCATIONAL PROGRAMMING
Grants received
-
GOLDMAN SACHS CHARITABLE GIFT FUND
$517,500
2024 SCHOLARSHIPS & FINANCIAL AID
-
GOLDMAN SACHS CHARITABLE GIFT FUND
$212,500
2023 SCHOLARSHIPS & FINANCIAL AID
-
2022 SCHOLARSHIPS & FINANCIAL AID
-
2024 For grant recipient's exempt purposes
-
2023 GENERAL SUPPORT
-
DONOR ADVISED CHARITABLE GIVING
$38,503
2024 EDUCATION
-
2024 GENERAL SUPPORT
-
2022 GENERAL SUPPORT
-
CHARITIES AID FOUNDATION AMERICA
$30,170
2023 CHARITABLE DONATION
-
2022 For grant recipient's exempt purposes
The 10 largest by cash amount. The API serves every itemized grant.
Other IRS files
Auto-Revocation List
Not listed. The IRS publishes this list for organizations whose exemption was automatically revoked for failing to file for three consecutive years.
Publication 78
Listed as of 13 October 2026, under deductibility PC.
These are two separate IRS files on two separate schedules, shown as published and not reconciled with each other. Neither is a statement about whether a contribution is deductible today: 19,245 organizations appear in Publication 78 while the IRS's own revocation file lists them as currently revoked, more than half of those revoked before 2019. Absence from Publication 78 is evidence of nothing, and presence is not evidence either. Verify current status with the IRS before relying on it.
What this page reflects
The registration facts above come from the IRS Business Master File published 13 October 2026 and read 1 November 2026, for every organization at once. Returns through tax year 2024, the newest we have parsed for this organization.