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

  • Tuesday, May 3
    Staff meeting/late start (pending).
  • Friday, May 6
    Honors Convocation.
  • Saturday, May 7
    Laddie Cup Regatta

    Orchard Lake St. Mary's Crew Team will host their annual only home regatta, entitled the "Laddie Cup" on May 7th from 8am-2pm. Read More


  • Congratulations to Tyler Cochran, who is a finalist for the Catholic League, Walt Bazylewicz Athlete of the Year Award.  (Winner to be announced in late May.)
  • Dress Code Beginning Monday, May 2nd, students are welcome to wear the official OLSM polo shirts or standard shirt and tie.  There will be days, such as Honors Convocation, where all students are required to wear shirt and tie.  
  • AP Testing AP testing begins next week.  Test must be completed at the scheduled time as determined by the College Board.  Any questions should be directed to Mr. Clouse   
  • Polish Country Fair (PCF):  open sign-up for PCF shifts will begin on Wednesday morning at 7:00 AM.