St. Mary's School serves 153 students in grades Prekindergarten-8, is a member of the National Catholic Educational Association (NCEA).
The student:teacher of St. Mary's School is 17:1 and the school's religious affiliation is Catholic.
Quick Facts (2025-26)
- Grades: Prekindergarten-8
- Enrollment: 153 students
- Yearly Tuition: $5,209
- Average class size: 10 students
- Application Deadline: None / Rolling
- Source: Verified school update
Top Rankings
St. Mary's School ranks among the top 20% of private schools in Massachusetts for:
Category
Attribute
Affordability
School Overview
School Membership(s)School Assoc.
Religious Affiliation
Grades Offered
Grades Prekindergarten-8
School Calendar
Last Day of School
Mon. Jun 1, 2026
Student Body
Total Students
153 students
Student Body Type
Co-ed
% Students of Color
3%
State avg.: 31%
Students by Grade

Academics and Faculty
Total Classroom Teachers
9 teachers
Student-Teacher Ratio
17:1
National avg.: 13:1
Average Class Size
10 students
Tuition and Acceptance Rate
Admission Deadline
None / Rolling
Yearly Tuition Cost
Average Financial Aid Grant
$600
Admissions Director
Jennifer Masten
Application URL
Source: Verified school update
Frequently Asked Questions
How much does St. Mary's School cost?
St. Mary's School's tuition is approximately $5,209 for private students.
When is the application deadline for St. Mary's School?
The application deadline for St. Mary's School is rolling (applications are reviewed as they are received year-round).
School Reviews
Endorse St. Mary's School. Endorsements should be a few sentences in length. Please include any comments on:
- Quality of academic programs, teachers, and facilities
- Availability of music, art, sports and other extracurricular activities
- Academic or athletic awards
Recent Articles

What Private School Alumni Say a Decade Later
Ten years after graduation, private school alumni reflect on advantages, regrets, career impact, and life lessons—unearthing truths families need to know.

Can Private School Help with College Admissions?
Explore how private schools influence college admissions—advantages, limitations, and what families should expect.

Inside the Daily Life of a Private School Student
Discover what daily life is like for private school students in 2025, from classes and athletics to dining, dorms, and extracurriculars.