Fiscal year ending 2025. Filed on December 16, 2025.
146 High Street
Stratham, New Hampshire 03885
The Cornerstone School (EIN: 22-2730159) has filed an IRS Form 990 since fiscal year 2021. In its fiscal year 2025 IRS Form 990 filing, The Cornerstone School, a 501(c)(3) charitable organization, reported compensation for 1 out of 46 total employees. Among the employees shown here, the average compensation is $144,000. The highest compensated employee at The Cornerstone School is Peter Zetlan with fiscal year 2025 compensation of $144,000.
Revenue
Expenses
Employee compensation
TO PROVIDE MONTESSORI EDUCATION TO CHILDREN AGES 15 MONTHS TO 14 YEARS OLD
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