St. Mary's School serves 82 students in grades 7-9, is a member of the Other school association(s).
The student:teacher of St. Mary's School is 12:1 and the school's religious affiliation is Catholic.
Quick Stats (2025)
- Top Ranked IL School
- Grades: 7-9
- Enrollment: 82 students
- Yearly Tuition: $25,000
- Application Deadline: None / Rolling
- Source: National Center for Education Statistics (NCES)
Top Rankings
St. Mary's School ranks among the top 20% of private schools in Illinois for:
School Overview
School Membership(s)School Assoc.
Religious Affiliation
Grades Offered
Grades 7-9
Year Founded
1858
School Calendar
First Day of School
Fri. Aug 15, 2025
Last Day of School
Mon. May 25, 2026
Campus Size
5
Student Body
Total Students
82 students
Student Body Type
Co-ed
% Students of Color
7%
State avg.: 34%
Students by Grade
Academics and Faculty
Total Classroom Teachers
7 teachers
Student : Teacher Ratio
12:1
National avg.: 13:1
Number of AP Courses
10 courses
Tuition and Acceptance Rate
Admission Deadline
None / Rolling
Yearly Tuition Cost
$25,000
Application URL
Endowment Size
$50 million
School Notes
- School Motto: Truth and Honor
Source: National Center for Education Statistics (NCES)
Frequently Asked Questions
How much does St. Mary's School cost?
St. Mary's School's tuition is approximately $25,000 for private students.
What is St. Mary's School's ranking?
St. Mary's School ranks among the top 20% of private schools in Illinois for: Oldest founding date and Largest endowments.
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
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