St. Mary's Preparatory Catholic High School OLS The Polish Mission SSCMS
Welcome to St. Mary's Catholic and Boarding High School

St. Mary's Preparatory - A Catholic, College Prep, All-Boys High School for Day and Boarding Students

St. 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. St. Mary's is accredited by the State of Michigan Board of Education, the Archdiocese of Detroit, and MNSAA/MANS. Almost 100% of our graduates attend college. "If the Orchard Lake Schools did not exist, it would be necessary to establish them." -- Pope John Paul II

Upcoming Events

  • Thursday, Aug. 24

    First home football game (7:00)

  • Friday, Aug. 25
    Late start

  • Monday, Aug 28

    Moms and Dads General Meeting
    Meet the Teacher Night

  • Friday, Sept. 1
    NO SCHOOL - Labor Day Weekend


  • Prep Building Construction Letter:

    We are pleased to inform you that the Orchard Lake Schools Board of Regents and the Prep Board of Trustees has approved an upgrade and modernization of the existing fifteen classrooms in the Prep Building and the construction of a new modern state of the art classroom building. Read More

    Congratulations to Joshua Edmonds who was honored as 1st Team All American at the National Wrestling Championship in Fargo, North Dakota.  He ranked 8th out of 128 kids across the United States in his weight class (132 lbs).

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