St. Mary's Preparatory - Detroit Catholic Schools

Orchard Lake St. Mary's Preparatory

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St. Mary’s Preparatory is a Catholic, co-divisional, college preparatory high school with a Polish-American heritage and legacy since 1885 A.D. We exist to provide deserving young men and women the moral guidance, discipline, and education to become Christ-like models of service and leadership for the world. By completion of our spiritual and educational model, our students gain the character, reverence, and fortitude to meet all challenges for the greater glory of God and their alma mater. Offering a boarding school option for the boys division, our community is rich in diversity and culture.

• 2021 Enrollment: 890 (Co-Divisional)
• Financial Aid Offered: Yes
• Financial Aid Deadline: January 1, then rolling
• Scholarships Offered: Yes
• Scholarship Deadline: January 1st or rolling. See website for details.
• Admission Requirements: Application; Interview; Visit; Teacher Recommendation(s); Discipline Release; 7th/8th Grade Report Cards
• Application Deadline: January 8, then rolling

Candace Castiglione, Dean of Admissions
[email protected]
• 248-392-9280

Our Catholic faith is at the forefront of a St. Mary’s Prep education. All students are required to attend weekly campus masses in the Shrine Chapel of Our Lady of Orchard Lake on campus. All students take four years of theology courses and participate in annual grade level retreats. Students are all required to participate in service-learning projects with service hours being an academic requirement for each school year.

We have a unique partnership with both Lawrence Technological University and Madonna University in which our students are given the opportunity to earn actual college credit. The typical St. Mary’s senior will graduate with 12-16 college credits. AP and honors courses are offered at every grade level. Sophomore students take a unique highly intensive humanities course that gives them a 6-week rotation of the following: ACT/SAT Prep, Robotics, Debate/Forensics, music technology, computer science and art. This allows students to experience, as an underclassman, a variety of elective routes they may be interested to pursue during their junior and senior years. Students take eight 45-minute class periods in a school day, one of those being a school wide 4th period seminar hour designed specifically like a study hall.

• Boys Division: football, soccer, cross country, crew, basketball, hockey, wrestling, skiing/boarder cross, baseball, track/field, golf, bowling, lacrosse
• Girls Division: volleyball, cheerleading, cross country, crew, basketball, competitive cheer, bowling, tennis, softball, hockey, soccer, poms team, skiing/snowboarding

• We have over 25 different campus clubs. For a full list, please visit our club guide on our website Some of these clubs include: National Honors Society, Student Council, Catholic Athletes for Christ, Business Society, Future Medical Professionals of OLSM, Earth Club, Mental Health Club, Art Club, Fishing Club, Archery Club, Book Club, STEM Club, Diversity & Inclusion Club, Robotics, Debate & Forensics, Model United Nations, Pastoral Team.

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