St. Mary's Preparatory is a Catholic, all-boys, college preparatory high school with a Polish-American heritage and legacy.
Our mission is to provide deserving young men the moral guidance, discipline, and education necessary to become Christian gentlemen, scholars, and men of service and leadership for the world.
By completion of our spiritual and educational model, these men can gain the fortitude, reverence, character, and preparation to meet all challenges for the greater glory of God and their alma mater.
Saint Mary's Preparatory is a four year secondary program of pre-college studies in a disciplined environment preparing young men for future study and careers of service.
The Prep has a day student and boarding school program.
Quick Stats (2025)
- Top Ranked MI School
- Grades: 9-12
- Enrollment: 500 students
- Application Deadline: None / Rolling
- Source: National Center for Education Statistics (NCES)
Top Rankings
St. Mary's Preparatory School ranks among the top 20% of private schools in Michigan for:
Category
Attribute
Student Body
School Overview
School Membership(s)School Assoc.
Religious Affiliation
Grades Offered
Grades 9-12
Student Body
Total Students
500 students
Student Body Type
% Students of Color
20%
State avg.: 18%
Students by Grade

Academics and Faculty
Total Classroom Teachers
34 teachers
Student : Teacher Ratio
15:1
National avg.: 13:1
Tuition and Acceptance Rate
Admission Deadline
None / Rolling
School Notes
- St. Mary's Preparatory is a Catholic, all-boys, college preparatory high school with a Polish-American heritage and legacy. Our mission is to provide deserving young men the moral guidance, discipline, and education necessary to become Christian gentlemen, scholars, and men of service and leadership for the world. By completion of our spiritual and educational model, these men can gain the fortitude, reverence, character, and preparation to meet all challenges for the greater glory of God and their alma mater. Saint Mary's Preparatory is a four year secondary program of pre-college studies in a disciplined environment preparing young men for future study and careers of service. The Prep has a day student and boarding school program.
Source: National Center for Education Statistics (NCES)
Frequently Asked Questions
What is St. Mary's Preparatory School's ranking?
St. Mary's Preparatory School ranks among the top 20% of private schools in Michigan for: Largest student body.
When is the application deadline for St. Mary's Preparatory School?
The application deadline for St. Mary's Preparatory School is rolling (applications are reviewed as they are received year-round).
School Reviews
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