Nonprofit · EIN 22-2730159
CORNERSTONE SCHOOL
Tax-exempt · STRATHAM, NH 03885
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| June 30, 2025 | 990 | $2,890,588 | $2,697,681 | $192,907 | $3,115,502 | $679,703 | $2,435,799 |
| June 30, 2024 | 990 | $2,565,127 | $2,608,527 | -$43,400 | $2,659,876 | $441,002 | $2,218,874 |
Financial details: 990 for the year ended June 30, 2025
Revenue
- Contributions, gifts and grants
- $39,673
- Program service revenue
- $2,804,160
- Investment income
- $46,469
- Net gain from sales of assets
- $15,997
- Net income from fundraising events
- $286
- Other revenue
- $286
Expenses
- Grants and similar amounts paid
- $52,368
- Compensation of officers, directors and key employees
- $149,650
- Other salaries and wages
- $1,707,880
- Salaries, compensation and benefits (total)
- $2,087,719
- Professional fundraising fees
- $0
- Accounting fees
- $23,500
- Occupancy
- $181,081
- Depreciation
- $171,836
- Program services (functional)
- $2,302,574
- Management and general (functional)
- $389,667
- Fundraising (functional)
- $5,440
Balance sheet and other
- Total assets, start of year
- $2,659,876
- Total assets, end of year
- $3,115,502
- Total liabilities, end of year
- $679,703
- Net assets, end of year
- $2,435,799
- Land, buildings and equipment
- $1,790,357
- Publicly traded securities
- $588,217
- Net assets without donor restrictions
- $2,435,799
- Gross receipts
- $2,970,765
- Employees
- 46
- Volunteers
- 75
- Year formed
- 1985
- State of legal domicile
- NH
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 |
|---|---|---|---|---|
| PETER ZETLAN | HEAD OF SCHOOL Officer | 40 | $140,000 | $4,000 |
| AARON PETERS | BOARD CHAIR Trustee or director, Officer | 3 | $0 | $0 |
| MIKE RAINBOTH | DIRECTOR Trustee or director | 2 | $0 | $0 |
| ERIN GARNETT | DIRECTOR Trustee or director | 2 | $0 | $0 |
| CHRIS YONKER | DIRECTOR Trustee or director | 2 | $0 | $0 |
| RUTH RANDLETT | DIRECTOR Trustee or director | 2 | $0 | $0 |
| JOSH HENLY | DIRECTOR Trustee or director | 2 | $0 | $0 |
| ANNE RUOZZI | DIRECTOR Trustee or director | 2 | $0 | $0 |
| BURCU RUBINI | DIRECTOR Trustee or director | 2 | $0 | $0 |
| JEFF ZWILLENBERG | DIRECTOR Trustee or director | 2 | $0 | $0 |
| SHANIKA AMARAKOON | DIRECTOR Trustee or director | 2 | $0 | $0 |
| ALEXANDRA HAMPTON | DIRECTOR Trustee or director | 2 | $0 | $0 |
| JOANNA JASKOLKA | SECRETARY Trustee or director, Officer | 2 | $0 | $0 |
| COREY OSTMAN | TREASURER Trustee or director, Officer | 2 | $0 | $0 |
| JULIE KUKENBERGER | VICE CHAIR Trustee or director, Officer | 2 | $0 | $0 |
990 for the year ended June 30, 2024: 11 people
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| LEELA PAHL | HEAD OF SCHOOL Officer | 40 | $104,750 | $1,500 |
| JOSH HENLY | DIRECTOR Trustee or director | 2 | $0 | $0 |
| ROBERT PRUYNE | DIRECTOR Trustee or director | 2 | $0 | $0 |
| JULIE KUKENBERGER | VICE CHAIR Trustee or director, Officer | 2 | $0 | $0 |
| MICHAEL RAINBOTH | DIRECTOR Trustee or director | 2 | $0 | $0 |
| ERIN GARNETT | DIRECTOR Trustee or director | 2 | $0 | $0 |
| AARON PETERS | BOARD CHAIR Trustee or director, Officer | 3 | $0 | $0 |
| JOANNA JASKOLKA | SECRETARY Trustee or director, Officer | 2 | $0 | $0 |
| COREY OSTMAN | TREASURER Trustee or director, Officer | 2 | $0 | $0 |
| CHRIS YONKER | DIRECTOR Trustee or director | 2 | $0 | $0 |
| RUTH RANDLETT | DIRECTOR Trustee or director | 2 | $0 | $0 |
Address and contacts
- Address (IRS master file)
- 146 HIGH ST, STRATHAM, NH 03885-2271
- Principal officer (990 for 2024)
- CHRIS YONKERS, 146 HIGH STREET, STRATHAM, NH 03885
- Signed the 990
- CHRIS YONKERS, BOARD CHAIR
- Phone
- (603) 772-4349
- Website
- WWW.CORNERSTONESCHOOL.ORG
- Return prepared by
- NATHAN WECHSLER & COMPANY PA
Mission
TO PROVIDE MONTESSORI EDUCATION TO CHILDREN AGES 15 MONTHS TO 14 YEARS OLD
Program accomplishments
- TO PROVIDE MONTESSORI EDUCATION TO CHILDREN AGES 15 MONTHS TO 14 YEARS OLDExpenses $2,302,574 · grants $52,368 · revenue $2,820,157
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 | 990 on file |
IRS record
- EIN
- 22-2730159
- 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
- 1986
- Accounting year ends
- June
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Education (B240)
- Assets (IRS master file)
- $3,115,502
- Income (IRS master file)
- $2,970,765
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | June 2025 | $2,890,588 | $2,697,681 | $3,115,502 | XML |
| 990 | June 2024 | $2,565,127 | $2,608,527 | $2,659,876 | XML |
| 990 | June 2023 | $2,273,787 | $2,444,517 | $2,682,571 | IRS |
| 990 | June 2022 | $2,066,541 | $2,151,728 | $2,734,658 | IRS |
| 990 | June 2021 | – | – | – | 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 22-2730159).
Questions about CORNERSTONE SCHOOL
- What is the EIN of CORNERSTONE SCHOOL?
- The employer identification number (EIN) of CORNERSTONE SCHOOL is 22-2730159.
- Is CORNERSTONE SCHOOL tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1986.
- Are donations to CORNERSTONE SCHOOL tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does CORNERSTONE SCHOOL 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 CORNERSTONE SCHOOL 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 CORNERSTONE SCHOOL 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 CORNERSTONE SCHOOL?
- The 990 for the year ended June 30, 2025 names CHRIS YONKERS.
- Who are the officers and directors of CORNERSTONE SCHOOL?
- The 990 for the year ended June 30, 2025 lists 15 people; 1 received compensation from the organization, the highest $140,000 (PETER ZETLAN, HEAD OF SCHOOL).
- How much revenue does CORNERSTONE SCHOOL have?
- On its 990 for the year ended June 30, 2025 it reported revenue of $2,890,588, expenses of $2,697,681 and total assets of $3,115,502 at year end.
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