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St. Mary School

32 Carroll Ave A Williamstown, NJ 08094

Quick Facts (2026-27)

  • Top Ranked NJ School
  • Grades: Prekindergarten-8
  • Enrollment: 430 students
  • Yearly Tuition: $6,175
  • Application Deadline: None / Rolling
  • Source: National Center for Education Statistics (NCES)
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About the School

  • St. Mary School is a Catholic School committed to sharing gospel values and social justice issues.
  • We, as a school community, offer an environment where students are challenged to reach their potential academically, are called to live Gospel values, and are taught to respect themselves and others.
  • At St. Mary School we are proud of the education that we offer and the diversity of our programs.

Quick Facts (2026-27)

  • Top Ranked NJ School
  • Grades: Prekindergarten-8
  • Enrollment: 430 students
  • Yearly Tuition: $6,175
  • Application Deadline: None / Rolling
  • Source: National Center for Education Statistics (NCES)

School Rankings

St. Mary School ranks among the top 20% of private schools in New Jersey for:

Category
Attribute
Student Body

School Facts

Religious Affiliation
Grades Offered
Grades Prekindergarten-8
Students By Grade
Year Founded
2000
School Calendar

Student Body

Total Students
430 students
Student Body Type
Co-ed
% Students of Color
15%
State avg.: 40%

Academic Profile

Total Classroom Teachers
26 teachers
Student-Teacher Ratio
17:1
National avg.:

Tuition & Financial Aid

Admission Deadline
None / Rolling
Yearly Tuition Cost
Application URL

Frequently Asked Questions

How much does St. Mary School cost?
St. Mary School's tuition is approximately $6,175 for private students.
What is St. Mary School's ranking?
St. Mary School ranks among the top 20% of private schools in New Jersey for: Largest student body.
When is the application deadline for St. Mary School?
The application deadline for St. Mary School is rolling (applications are reviewed as they are received year-round).

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Did You Know?

The average private school tuition in Gloucester County, NJ is $7,801 for elementary schools (read more about average private school tuition across the country).

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