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

  • Tuesday, April 4, 2017
    English Oratorical


  • We need your input (survey):  At conferences we released a short 10 questions survey about current and future technology at St. Mary’s.  Your input is essential in ensuring that we create the best possible learning environment.  We are currently considering a range of options regarding the future of textbooks/tablets as well as online/hybrid learning at St. Mary’s.  The results from this survey will play a significant role in determining how we move forward. Please click on the link to compete the survey.  Click here to complete the survey

Latest News

  • Proclamation Honoring Olsm Varsity Football Team

    March 16, 2017 - Our Varsity Football Team at Oakland County Board of Commissioners Meeting
  • 2016 Chancellor's Christmas Concert

  • St. Mary's winning touchdown...

  • JJ & Marcin Interview