Arbor Montessori School Inc
Public records show a registered, tax-exempt organization in good standing.
What it says it does
THE MISSION OF ARBOR MONTESSORI SCHOOL IS TO DEVELOP THE UNIQUE CAPABILITIES OF EACH CHILD, THROUGH SUPPORTIVE RELATIONSHIPS, JOYFUL LEARNING, AND MEANINGFUL WORK IN A MONTESSORI ENVIRONMENT. THE SCHOOL SEEKS TO FOSTER INDEPENDENCE IN EACH CHILD, PREPARING HIM OR HER TO CONTRIBUTE WITH INTEGRITY TO THE COMMUNITY OF THE LARGER WORLD.
- Income
- $6.1 million
- Spending
- $5.4 million
- Spent on programs
- 81%
- Reserves
- 12.7 months of spending
- Largest source of income
- fees for its services, 80%
- Employees
- 69
- Volunteers
- 25
- Highest pay
- $164,494, head of school (non-voting)
Source: Form 990 for the year ending June 30, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate
Financial health
Strong: 96 out of 100. Higher than 90% of charities in its peer group (education, $1m to $10m).
Reserves
35 of 35Spendable reserves would cover 12.7 months of spending.
Debt
16 of 20It owes 24% of what it owns.
Living within its means
15 of 15Income exceeded spending by 11% of income.
Income trend
15 of 15Income rose 18% on the year before.
Spending floor
15 of 1581% of spending went to programs and raising each dollar of donations cost 23 cents.
Source: Form 990 for the year ending June 30, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate
Governance
Good: 70 out of 100. Higher than 26% of charities in its peer group (education, $1m to $10m).
Independent board
5 of 255 of 19 voting board members are independent.
Conflict of interest policy
15 of 15Has a written conflict of interest policy.
Whistleblower policy
8 of 8Has a written whistleblower policy.
Record keeping policy
7 of 7Has a written policy on keeping and destroying records.
Board minutes
5 of 5Keeps minutes of board meetings.
Board sees the tax return
0 of 10Did not give the board a copy of this return before filing it.
Pay set independently
5 of 5Sets its chief executive's pay through independent review and comparison.
Independent check of accounts
15 of 15Its accounts were audited by an independent accountant.
No reported misuse
10 of 10Reports no diversion of assets, excess benefits or loans to insiders.
Source: Form 990 for the year ending June 30, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate
Impact evidence
Describes programs. Its tax return describes what it does but we have found no measurable results in it.
Programs described in its return (1)
- $4.4 million spent. PROVIDING TODDLER, PRIMARY, ELEMENTARY, AND MIDDLE SCHOOL EDUCATION IN ACCORDANCE WITH THE PRINCIPLES OF THE ASSOCIATION MONTESSORI INTERNATIONALE. THE SCHOOL PROVIDES STUDENTS WITH ACCESS TO CURRICULUM-LED CLASSES, ACCREDITED TEACHERS, INSTRUCTIONAL MATERIALS AND OTHER INSTRUCTIONAL SUPPLIES.IT IS OUR VISION THAT EVERY CHILD GAINS A STRONG SENSE OF SELF AND REALIZES A LIFE-LONG SATISFACTION AND JOY IN LEARNING, WORKING, AND EXPLORING LIFE. WE BELIEVE THIS WILL ENABLE OUR CHILDREN TO CONTRIBUTE HAPPILY AND PRODUCTIVELY THEIR UNIQUE TALENTS TO THE WORLD, WHERE EVER THEY MAY GO. IN SERVING THE DIVERSE NEEDS OF CHILDREN FROM TODDLER AGE THROUGH ADOLESCENCE, WE NURTURE THE DEVELOPMENT OF EACH CHILD TO THEIR FULLEST POTENTIALINTELLECTUALLY, PHYSICALLY, SOCIALLY, CREATIVELY, EMOTIONALLY, AND SPIRITUALLY.WE ACCOMPLISH THIS BY PREPARING A STIMULATING CLASSROOM WITH BEAUTIFUL TACTILE MATERIALS WHERE OUR CHILDREN, WITH THE GUIDANCE OF OUR SPECIALLY TRAINED FACULTY, FOLLOW THEIR NATURAL TENDENCIES TO MASTER SKILLS. ARBOR'S PROGRAMS FOSTER SELF-MOTIVATION, SELF-DISCIPLINE, COMPASSION, INDEPENDENCE, CRITICAL THINKING, SOCIAL AND PERSONAL RESPONSIBILITY, AND RESPECT FOR OTHERS AND THE ENVIRONMENT.
Source: Form 990 for the year ending June 30, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate
Legitimacy checks
Is it registered with the IRS? Passed.
Listed in the IRS master file of tax-exempt organizations as a 501(c)(3) charitable organization.
Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated October 13, 2026.
Has the IRS revoked its tax-exempt status? Passed.
Not on the IRS automatic revocation list.
Source: Automatic revocation of exemption list, Internal Revenue Service, file dated October 13, 2026.
Are donations tax-deductible? Passed.
On the IRS list of organizations eligible to receive tax-deductible contributions.
Source: Publication 78 data: organizations eligible for tax-deductible contributions, Internal Revenue Service, file dated October 13, 2026.
Is it keeping up with its IRS filings? Passed.
Most recent return on file covers the year ending June 2025.
Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated October 13, 2026.
How long has it been tax-exempt? Passed.
Recognized by the IRS since June 1971.
Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated October 13, 2026.
Is it in good standing with state regulators? Passed.
Not on California's list of charities barred from soliciting. Other states are not yet checked.
Source: May Not Operate or Solicit for Charitable Purposes list, California Attorney General, Registry of Charities and Fundraisers, file dated October 21, 2026.
Ratings and checks are our reading of public records, using the published method. They are not a statement about anyone's honesty. If you work for this organization, you can send corrections or results, confirm you want gifts through Veridonate, or ask to be removed from giving.