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

  • Fall Open House
    Sunday, October 29, 2017
    Mass 11 am; Tours noon-3 pm
    Request Information
  • 2017 Annual Auction
    Saturday, November 4, 2017
    5:30-11:30 PM
    St. Mary’s Athletic Complex (SMAC)

Announcements

  • KAIROS Information Sheet (XV) October 17 – October 20, 2017
    PDFParent Permission
  • 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

2017-2018 St. Mary's Prep Latest News

  • OLSM's football game has been named the CHSL Game of the Week! Learn More
    OLSM's week five football game vs. DLS has been named the CHSL Game of the Week on FM 101.5 and AM 1400 the Patriot. In addition to being heard on-the-air it can be streamed on www.patriotdetroit.com. We are also on TuneIn, I Heart Radio, and have our own Patriot mobile app. Pregame coverage starts at 6:30 PM with the kickoff at 7.