Mission
TO PROVIDE MONTESSORI EDUCATION TO CHILDREN AGES 15 MONTHS TO 14 YEARS OLD
Public Charity
THE CORNERSTONE SCHOOL
Based in STRATHAM, NH, THE CORNERSTONE SCHOOL operates as a Public Charity. The organization reported $2.9M in revenue, $2.7M in expenses, $3.1M in total assets for fiscal year 2025. Imperigo tracks 2 reported grant relationships connected to this organization totaling approximately $13K.
EIN: 222730159
STRATHAM, NH
Primary & Elementary Schools
NTEE: B24
Latest filing: 2025
Total Revenue$2.9M
Total Expenses$2.7M
Total Assets$3.1M
Grant Records2
Funding Total$13K
Filing Years2021–2025
Where $100 goes at The Cornerstone School
How The Cornerstone School divides every $100 it spends, from its own Form 990 filings, averaged across 5 years.
$85
Programs
the work itself
$15
Management
running the organization
$0
Fundraising
none reported
No fundraising costs are reported. That often means fundraising runs through a separate affiliated organization that files its own return.
Inside the $85 for programs
$85
To provide montessori education to children ages 15 months to 14 years old
Source: Form 990 filings with the IRS, latest fiscal year 2025. Shares are from the organization's reported expenses. Data by Imperigo; not affiliated with the IRS.
Sample Grants Received
For grant recipient's exempt purposes
$5,200
For grant recipient's exempt purposes
$7,750
Showing up to 5 of 2 total records — full history available with membership.
Officers & Directors
BOARD CHAIR
Aaron Peters
DIRECTOR
Alexandra Hampton
DIRECTOR
Anne Ruozzi
DIRECTOR
Burcu Rubini
DIRECTOR
Chris Yonker
TREASURER
Corey Ostman
Officer compensation and complete director data available with membership.
Top Grant Purposes
Financial Trends
| Year | Revenue | Expenses | Assets |
|---|---|---|---|
| 2025 | $2.9M | $2.7M | $3.1M |
| 2024 | $2.6M | $2.6M | $2.7M |
| 2023 | $2.3M | $2.4M | $2.7M |
| 2022 | $2.1M | $2.2M | $2.7M |
| 2021 | $2.0M | $2.0M | $2.9M |
Between 2021 and 2025, reported annual revenue grew from $2.0M to $2.9M (+45%), with total assets most recently reported at $3.1M.
Interactive year-over-year charts and full filing details available with membership.