Nonprofit · EIN 56-2610311
SAN TAN MONTESSORI SCHOOL INC
Tax-exempt · GILBERT, AZ 85234
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| June 30, 2025 | 990 | $10,767,226 | $11,740,219 | -$972,993 | $28,259,492 | $31,284,357 | -$3,024,865 |
| June 30, 2024 | 990 | $10,703,801 | $10,277,548 | $426,253 | $27,631,410 | $29,683,282 | -$2,051,872 |
| June 30, 2023 | 990 | $10,651,020 | $11,097,549 | -$446,529 | $27,746,975 | $30,225,100 | -$2,478,125 |
Financial details: 990 for the year ended June 30, 2025
Revenue
- Contributions, gifts and grants
- $9,971,902
- of which government grants
- $9,945,359
- Program service revenue
- $712,507
- Investment income
- $39,134
- Net rental income
- $43,683
- Other revenue
- $43,683
Expenses
- Grants and similar amounts paid
- $0
- Compensation of officers, directors and key employees
- $373,200
- Other salaries and wages
- $4,131,398
- Salaries, compensation and benefits (total)
- $5,366,388
- Professional fundraising fees
- $0
- Legal fees
- $2,582
- Accounting fees
- $73,485
- Occupancy
- $39,657
- Travel
- $54,397
- Depreciation
- $977,890
- Program services (functional)
- $10,103,525
- Management and general (functional)
- $1,636,694
Balance sheet and other
- Total assets, start of year
- $27,631,410
- Total assets, end of year
- $28,259,492
- Total liabilities, end of year
- $31,284,357
- Net assets, end of year
- -$3,024,865
- Land, buildings and equipment
- $25,365,022
- Net assets without donor restrictions
- -$3,024,865
- Gross receipts
- $10,767,226
- Employees
- 120
- Year formed
- 2006
- State of legal domicile
- AZ
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 |
|---|---|---|---|
| Kristofer Sippel | Director Trustee or director, Officer | 40 | $242,400 |
| Rita Sippel | President Trustee or director, Officer | 30 | $130,800 |
| Tom Enneking | Director Trustee or director | 5 | $0 |
| Sam Tomlin | Treasurer Trustee or director, Officer | 5 | $0 |
| Tony Fiori | Director Trustee or director | 2 | $0 |
990 for the year ended June 30, 2024: 5 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| SIPPEL K | PRESIDENT Trustee or director, Officer | 40 | $241,400 |
| SIPPEL R | VICE PRESIDENT Trustee or director, Officer | 30 | $124,800 |
| TOMLIN S | TREASURER Trustee or director, Officer | 5 | $0 |
| ENNEKING T | MEMBER Trustee or director | 5 | $0 |
| FIORI A | MEMBER Trustee or director | 2 | $0 |
990 for the year ended June 30, 2023: 5 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| SIPPEL K | PRESIDENT Trustee or director, Officer | 40 | $241,700 |
| SIPPEL R | VICE PRESIDENT Trustee or director, Officer | 30 | $119,626 |
| TOMLIN S | TREASURER Trustee or director, Officer | 5 | $0 |
| ENNEKING T | MEMBER Trustee or director, Officer | 5 | $0 |
| FIORI A | MEMBER Trustee or director | 2 | $0 |
Address and contacts
- Address (IRS master file)
- 3959 E ELLIOT RD, GILBERT, AZ 85234-4345
- In care of
- % KRISTOFER SIPPEL
- Principal officer (990 for 2024)
- Kristofer Sippel, 3959 East Elliot Road, Gilbert, AZ 85234
- Signed the 990
- Kristofer Sippel, President
- Phone
- (480) 222-0811
- Website
- www.santancharterschool.com
- Return prepared by
- HEATHER N HOLCOMB
Mission
San Tan Charter School is a tuition-free charter school in Gilbert, Arizona, serving students from preschool through 12th grade. With Montessori, Gifted, and Mainstream programs, we provide families with educational choice and a supportive, close-knit community where every child can grow. Guided by our mission to educate the whole child, we focus on academics, social-emotional development, and strong relationships between students, families, and staff.
Program accomplishments
- Charter School for grades K through 12Expenses $10,103,525
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
- 56-2610311
- 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
- 2007
- Accounting year ends
- June
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Education (B11)
- Assets (IRS master file)
- $28,259,492
- Income (IRS master file)
- $10,767,226
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | June 2025 | $10,767,226 | $11,740,219 | $28,259,492 | IRS |
| 990 | June 2024 | $10,703,801 | $10,277,548 | $27,631,410 | XML |
| 990 | June 2023 | $10,651,020 | $11,097,549 | $27,746,975 | XML |
| 990 | June 2022 | $10,178,872 | $9,286,108 | $28,789,506 | IRS |
| 990 | June 2021 | – | – | – | IRS |
| 990 | June 2020 | – | – | – | 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 56-2610311).
Questions about SAN TAN MONTESSORI SCHOOL INC
- What is the EIN of SAN TAN MONTESSORI SCHOOL INC?
- The employer identification number (EIN) of SAN TAN MONTESSORI SCHOOL INC is 56-2610311.
- Is SAN TAN MONTESSORI SCHOOL INC tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2007.
- Are donations to SAN TAN MONTESSORI SCHOOL INC tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does SAN TAN 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 SAN TAN 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 SAN TAN 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 SAN TAN MONTESSORI SCHOOL INC?
- The 990 for the year ended June 30, 2025 names Kristofer Sippel.
- Who are the officers and directors of SAN TAN MONTESSORI SCHOOL INC?
- The 990 for the year ended June 30, 2025 lists 5 people; 2 received compensation from the organization, the highest $242,400 (Kristofer Sippel, Director).
- How much revenue does SAN TAN MONTESSORI SCHOOL INC have?
- On its 990 for the year ended June 30, 2025 it reported revenue of $10,767,226, expenses of $11,740,219 and total assets of $28,259,492 at year end.
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