Nonprofit · EIN 04-2499107
THACHER MONTESSORI SCHOOL INC
Tax-exempt · MILTON, MA 02186
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| June 30, 2025 | 990 | $3,447,097 | $3,343,351 | $103,746 | $6,673,266 | $2,626,724 | $4,046,542 |
| August 31, 2024 | 990 | $3,482,915 | $4,164,294 | -$681,379 | $6,576,356 | $2,845,035 | $3,731,321 |
| August 31, 2023 | 990 | $4,490,044 | $3,506,696 | $983,348 | $6,576,693 | $2,590,156 | $3,986,537 |
Financial details: 990 for the year ended June 30, 2025
Revenue
- Contributions, gifts and grants
- $62,348
- Program service revenue
- $3,303,517
- Investment income
- $70,921
- Net gain from sales of assets
- $19,752
- Other revenue
- $10,311
Expenses
- Grants and similar amounts paid
- $337,500
- Compensation of officers, directors and key employees
- $270,735
- Other salaries and wages
- $1,691,747
- Salaries, compensation and benefits (total)
- $2,254,738
- Professional fundraising fees
- $0
- Legal fees
- $2,074
- Accounting fees
- $22,985
- Occupancy
- $155,315
- Depreciation
- $126,027
- Program services (functional)
- $2,294,308
- Management and general (functional)
- $971,486
- Fundraising (functional)
- $77,557
Balance sheet and other
- Total assets, start of year
- $6,576,356
- Total assets, end of year
- $6,673,266
- Total liabilities, end of year
- $2,626,724
- Net assets, end of year
- $4,046,542
- Land, buildings and equipment
- $2,971,250
- Publicly traded securities
- $2,693,087
- Net assets without donor restrictions
- $3,775,120
- Net assets with donor restrictions
- $271,422
- Gross receipts
- $3,819,011
- Employees
- 65
- Volunteers
- 15
- Year formed
- 1971
- 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.
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| DEBA DUNN | FORMER HEAD Former | – | $200,740 | $24,261 |
| MICHELLE SEYLLER | HEAD OF SCHO Officer | 40 | $163,349 | $7,738 |
| VICKY VARNUM | BUSINESS MAN Officer | 40 | $88,008 | $8,840 |
| CARL TREICHEL | CHAIR Trustee or director, Officer | 2 | $0 | $0 |
| RICHARD SAUL | TREASURER Trustee or director, Officer | 2 | $0 | $0 |
| JEREMY ANGOFF | CLERK Trustee or director, Officer | 2 | $0 | $0 |
| NEIL DIMAIO | TRUSTEE Trustee or director | 2 | $0 | $0 |
| MICHELLE BRITO | TRUSTEE Trustee or director | 2 | $0 | $0 |
| ELIZABETH LAZAR | TRUSTEE Trustee or director | 2 | $0 | $0 |
990 for the year ended August 31, 2024: 9 people
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| DEBA DUNN | HEAD OF SCHO Officer | 40 | $195,693 | $22,766 |
| MICHELLE SEYLLER | ASST HEAD OF Officer | 40 | $128,349 | $5,822 |
| VICKY VARNUM | BUSINESS MAN Officer | 40 | $77,950 | $8,482 |
| CARL TREICHEL | CHAIR Trustee or director, Officer | 2 | $0 | $0 |
| RICHARD SAUL | TREASURER Trustee or director, Officer | 2 | $0 | $0 |
| JEREMY ANGOFF | CLERK Trustee or director, Officer | 2 | $0 | $0 |
| NEIL DIMAIO | TRUSTEE Trustee or director | 2 | $0 | $0 |
| MICHELLE BRITO | TRUSTEE Trustee or director | 2 | $0 | $0 |
| ELIZABETH LAZAR | TRUSTEE Trustee or director | 2 | $0 | $0 |
990 for the year ended August 31, 2023: 8 people
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| DEBA DUNN | HEAD OF SCHO Officer | 40 | $184,562 | $23,438 |
| MICHELLE SEYLLER | ASST HEAD OF Highest-paid employee | 40 | $114,448 | $5,490 |
| PETER BROWN | CFO Officer | 26 | $69,780 | $3,246 |
| CARL TREICHEL | CHAIR Trustee or director, Officer | 2 | $0 | $0 |
| RICHARD SAUL | TREASURER Trustee or director, Officer | 2 | $0 | $0 |
| JEREMY ANGOFF | CLERK Trustee or director, Officer | 2 | $0 | $0 |
| NEIL DIMAIO | TRUSTEE Trustee or director | 2 | $0 | $0 |
| ELIZABETH LAZAR | TRUSTEE Trustee or director | 2 | $0 | $0 |
Address and contacts
- Address (IRS master file)
- 1425 BLUE HILL AVE, MILTON, MA 02186-2300
- Principal officer (990 for 2024)
- MICHELLE SEYLLER, 1425 BLUE HILL AVENUE, MILTON, MA 02186
- Signed the 990
- CARL TREICHEL, CHAIR
- Phone
- (617) 361-2522
- Website
- WWW.THACHERSCHOOL.ORG
- Return prepared by
- WORTHINGTON HUGHES & HOAR PC
Mission
TO PROVIDE A DIVERSE, COLLABORATIVE LEARNING COMMUNITY. THROUGH THE MONTESSORI METHOD, WE EMBRACE EACH CHILD'S UNIQUE POTENTIAL AND CULTIVATE A PASSION FOR DISCOVERY.
Program accomplishments
- WE EMPOWER CHILDREN TO ACHIEVE ACADEMIC EXCELLENCE AND BECOME CONFIDENT, COMPASSIONATE, AND PROACTIVE MEMBERS OF THE WORLD COMMUNITY. PROVIDING INDEPENDENT EDUCATIONAL SERVICES TO APPROXIMATELY 115 STUDENTS, WITH APPROXIMATELY 33 RECEIVING FINANCIAL AID, PRE-SCHOOL THROUGH EIGHTH GRADE, ON A RACIALLY NONDISCRIMINATORY BASIS USING THE MONTESSORI EDUCATIONAL METHOD.Expenses $2,294,308 · grants $337,500 · revenue $3,303,517
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 year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | June 30, 2026 | November 16, 2026 | Not due yet |
| 2024 | June 30, 2025 | November 17, 2025 | 990 on file |
| 2023 | June 30, 2024 | November 15, 2024 | Check at the IRS |
IRS record
- EIN
- 04-2499107
- 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
- 1978
- Accounting year ends
- June
- Files
- Form 990 or 990-EZ
- Assets (IRS master file)
- $6,673,266
- Income (IRS master file)
- $3,819,011
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | June 2025 | $3,447,097 | $3,343,351 | $6,673,266 | XML |
| 990 | August 2024 | $3,482,915 | $4,164,294 | $6,576,356 | XML |
| 990 | August 2023 | $4,490,044 | $3,506,696 | $6,576,693 | XML |
| 990 | August 2022 | $3,549,396 | $3,322,577 | $5,877,687 | IRS |
| 990 | August 2021 | – | – | – | IRS |
| 990 | August 2020 | – | – | – | IRS |
| 990 | August 2019 | – | – | – | IRS |
| 990 | August 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 04-2499107).
Questions about THACHER MONTESSORI SCHOOL INC
- What is the EIN of THACHER MONTESSORI SCHOOL INC?
- The employer identification number (EIN) of THACHER MONTESSORI SCHOOL INC is 04-2499107.
- Is THACHER MONTESSORI SCHOOL INC tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1978.
- Are donations to THACHER MONTESSORI SCHOOL INC tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does THACHER 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 THACHER 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 THACHER 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 THACHER MONTESSORI SCHOOL INC?
- The 990 for the year ended June 30, 2025 names MICHELLE SEYLLER.
- Who are the officers and directors of THACHER MONTESSORI SCHOOL INC?
- The 990 for the year ended June 30, 2025 lists 9 people; 3 received compensation from the organization, the highest $200,740 (DEBA DUNN, FORMER HEAD).
- How much revenue does THACHER MONTESSORI SCHOOL INC have?
- On its 990 for the year ended June 30, 2025 it reported revenue of $3,447,097, expenses of $3,343,351 and total assets of $6,673,266 at year end.
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