elcome to St. Mary’s Prep!
Thank you for visiting our school's website.  Education is one of the most important decisions you will make for your child.  Choose St. Mary's Prep to  educate your child's mind, heart and spirit.


Gold has been treasured since ancient times for its beauty and permanence. The beauty in its children and the permanence of the school is why St. Mary's Prep has been educating children in the Denville area

 For more than 60 years. St. Mary's Prep is blessed with a heritage founded in faith and the sacrifices and hard work of countless men and women, young and old, friends and Families, sisters and priests.

  • 60th Anniversary

  • You are cordially invited to attend our 60th Anniversary - Celebrating our Past, Present and Future
    Saturday, March 21, 2015 - 5:00PM Mass
    Click here for info and reservations
  • 100 Route 46
    Denville, NJ 07834

    Dr. Margaret McCluskey, Principal
    Fr. Martin Glynn, Pastor

    School Office: 973-627-2606
    School Fax: 973-627-9316
    Rectory: 973-627-0269
    CCD Office: 973-627-8276