The Cornerstone School (Top Ranked 草榴社区 School for 2026-27)

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About the School

The Cornerstone School is deeply committed to laying the foundation upon which each child can build in order to become the architect of his or her own future.
The foundation consists of an open, inquiring mind, a loving heart, and a solid inner confidence that permits respect for our earth and its inhabitants.
The groundwork is laid in an environment of intellectual challenge, and close, supportive relationships among students, teachers, and parents.

Quick Facts (2026-27)

Top Ranked NH School
School Type: Montessori School
Grades: Prekindergarten-8
Enrollment: 163 students
Application Deadline: None / Rolling
Source: 鉁�Verified school update

School Rankings

The Cornerstone School ranks among the top 20% of private schools in New Hampshire for:

School Facts

School Type

Montessori School

Religious Affiliation

Nonsectarian

Grades Offered

Grades Prekindergarten-8

Students By Grade

View Data

Distribution of Students By Grade
Grade	The Cornerstone School
Nursery	10
Pre-K	34
Kind	23
1	18
2	13
3	16
4	10
5	17
6	10
7	5
8	7

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Year Founded

1985

Campus Size

11 acres

School Motto

The goal of early childhood education should be to activate the child's own natural desire to learn.

Student Body

Total Students

163 students

Student Body Type

Co-ed

% Students of Color

State avg.: 18%

Academic Profile

Total Classroom Teachers

28 teachers

Student-Teacher Ratio

6:1

National avg.:

School Membership(s)School Assoc.

American Montessori Society (AMS)

Tuition & Financial Aid

Admission Deadline

None / Rolling

Application URL

School Notes

The Cornerstone School is deeply committed to laying the foundation upon which each child can build in order to become the architect of his or her own future. The foundation consists of an open, inquiring mind, a loving heart, and a solid inner confidence that permits respect for our earth and its inhabitants. The groundwork is laid in an environment of intellectual challenge, and close, supportive relationships among students, teachers, and parents.

Source: Verified school update

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Frequently Asked Questions

What is The Cornerstone School's ranking?

The Cornerstone School ranks among the top 20% of private schools in New Hampshire for: Largest student body.

When is the application deadline for The Cornerstone School?

The application deadline for The Cornerstone School is rolling (applications are reviewed as they are received year-round).

School Reviews

5 8/8/2019

I have three children at this school. Each one of my kids has unique strengths and challenges with respect to their educational needs. I have loved the way this school has catered to these needs. The kids are with the same pair of caring teachers for 3 years, allowing them to develop a strong relationship and to be understood. We have had a wonderful experience at every classroom level.

- Posted by Parent - Miller A.

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Did You Know?

The average private school tuition in Rockingham County, NH is $19,359 for elementary schools and $31,435 for high schools (read more about average private school tuition across the country).

The average acceptance rate in Rockingham County, NH is 67% (read more about average acceptance rates across the country).

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