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

  • Wednesday, February 3, 2016
    Short guest speaker after mass
  • Sunday, February 7, 2016
    Father & Son MASS & Luncheon
    Come meet the “Soup” on February 7th!
    RSVPs may either be turned in to Annette Knight, in the Ice Arena office or Lynda Kosco in the Prep.
  • February 12-15, 2016
    Mid Winter Break - No School
  • Thursday, February 18, 2016
    Late start, staff meeting


  • Food Drive
    Thur. Jan 28 - Fri. Feb 5
    Annual food drive for Sister Judie Ann Ruggirello.