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    St. Mary's Preparatory

    Orchard Lake Schools

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    Attendance Hotline:
    Vonica Saroki
    (248) 392-9467

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    Summer Camps

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    Orchard Lake St. Mary’s Preparatory has announced a new, innovative approach to learning and student development in the Fall of 2020. St. Mary’s will become the first Catholic high school in its region to operate under a co-divisional model, with boys and girls educated in a single-gender learning environment on the same campus.

     

  • News & Events

    2024-2025 St. Mary's Prep News and Events

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    Academic Calendar

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    View 2024-2025 Calendar

    View 2025-2026 Calendar

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    2025 Founder's Day

    The Founder's Day celebration commemorates the founding of the Orchard Lake Schools with a full day of activities including a 5K Run/...

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    2025 NHS INDUCTEES

    Congratulations to the following OLSM students who were recently inducted into the National Honor Society (NHS). Both ceremonies took place in the Archdiocesan Shrine...

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    STATE CHAMPIONS!

    Congratulations to our Varsity Hockey Team on their Division 3 State Championship! They defeated Cranbrook 3-0 on Saturday.

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    Alumni Scholarship Awards

    This year’s finalists, announced at the student Masses, include Jillian Gibbs, Madeline

    Neil, Luke Sallach and Dillan Arafat.

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    Soaring Eaglets

    Senior Ben Klingbeil is a Semifinalist for the 2025 class of the Coca-Cola Scholars

    Program.

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    Athletics News

    2024 -2025 Girls Division

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    OLSM Club News

    2024 -2025

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    STATE CHAMPIONS!

    On November 23, 2025, in the Eaglets first semifinal football game since 2016, (#15) OLSM (10-3) beat (#7) Birmingham Groves (12-1) 28-27 with the game ending field goal in ...

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    In & Out of the Classroom

    On April 1, Girls from the Advanced Liturgy Class visited Sweetest Heart

    of Mary Parish in Detroit, where they learned

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    Mother-Daughter Brunch

    Thank you to EVERYONE who attended and participated in the 4th annual Mother-Daughter brunch this year! Photography by Angela Jaboro

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    Black history Art Contest

    Last month, OLSM celebrated Black History Month with many events related to the extraordinary accomplishments of historical African Americans ...

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    Willow Rhodes: Art To Inspire

    Prep senior Willow Rhodes is breaking boundaries in her art and inspiring others....

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    Athletics News

    2024 -2025 Boys Division

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    Personal Finance

    September 6, 2024

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    Message from the Headmaster

    What an exciting time for us as Academic Year 2024-25 officially began in prayer with a Liturgy for our faculty and staff on The Holy Day ...

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    2 0 2 5 Honors Convocation (Seniors)

    Boys Division

    Girls Division

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    Moms & Dads Club

    Bingo Night

    On Thursday, March 6th the Moms and Dads Club had over 300 in attendance for its first Bingo Night...

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    In & Out of the Classroom

    Congratulations to our OLSM band and orchestra students on fantastic performances! Sophomore Dean Plowman (Violin) was selected to participate in the 2025 Wayne...

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    Service Is Strong All Year at OLSM

    Our OLSM Band performed their annual Christmas Concert with the price of ...

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    OLSM's Halloween Drive

    Prep students are lifting up others in need through OLSM’s Halloween Candy Drive. Donations will help support First Step Mental Health Service. So sweet!

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    Congratulations!

    Varsity Football Award Winners

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    The Greatest Gala on Earth!

    Feb 1, 2025

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    May 2025

    Campus Communicator

  • Orchard Lake St. Mary's Prep

    The fire, tornado, and safety drills were conducted on the following dates: 

    Fire Drill

    • September 13, 2024 at 8:30am
    • October 22, 2024 at 1:00pm
    • November 12, 2024 at 8:30am
    • March 10, 2025 at 1:15pm
    • March 21, 2025-Prep at 8:25am
    • April 2, 2025-Dorm at 8:00pm
    • April 15, 2025-Gymnasium at 7:50am
    • April 15, 2025-Admissions at 8:10am

    Safety Drill

    • October 31, 2024 at 1:00pm
      St. Mary's Prep
    • December 9, 2024 at 1:00pm
      St. Mary's Prep
    • April 15, 2025 at 8:15am
      Admissions Bldg.

    Tornado Drill

    • March 18, 2025 at 9:15am-Campus
    • April 7, 2025 at 9:30am-Campus

  • What is Co-Divisional?

    This model offers a single-gender classroom experience alongside opportunities for boys and girls to engage socially, spiritually and in co-curricular activities. St. Mary’s prepares its students to excel in college and beyond by developing their abilities to think critically, work collaboratively, and succeed independently.

     

    In this culture, for the first time, both boys and girls will have all of the advantages of co-educational interaction without social pressures in the classroom. With the boys and girls in separate classrooms for the majority of their instruction, students have a choice of when and how they socialize during break times, before, and after the school day ends.

     

    Our mission and message remain the same:

     

    1. God

    2. Family

    3. St. Mary's

     

  • Welcome to St. Mary's

     

    St. Mary’s Preparatory sits on 115 acres of land located at Commerce and Orchard Lake Roads in Orchard Lake, Michigan. We are roughly 25 miles northwest of Detroit. Our Campus sits beautifully on 200 feet of shoreline on Orchard Lake. With immaculate views of Orchard Lake, we have 32 buildings on campus.

  • WE ARE

     

    A Catholic, college preparatory high school with a Polish-American heritage and legacy since 1885 A.D. We exist to provide deserving students with the moral guidance, discipline, and education to become Christ-like models of service and leadership for the world.

     

     

  • Girls Division

    Starting in the Fall semester of 2020, our historic institution will break new ground with the opening of the St. Mary's Preparatory Girls Division. This unique model will allow us to educate young women with the same Christ-like model that we have used use to educate young men for over 135 years.
     

  • Boys Division

    With 135 years of Catholic Education on our campus, St. Mary's Preparatory is one of the premiere Catholic boys educational institutions in the nation.

  • News & Events

  • Gallery

    Photos & videos from our past events

    Derby-Themed Brunch
    Ernest Heming
    Mr. Bob Pyles Retirement
    Boys Div. Commencement Speaker
    Congratulations!
    Girls Division - Class 2024

  • Hello & Welcome!

    Prep School Office: 248-836-1292

    School Fax: 248-683-1740

    St. Mary's Preparatory is located at
    3535 Commerce Rd.

    Orchard Lake, MI 48324

    Headmaster: Leonard Karschnia

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