St. Louis City Schools

St. Mary's High School

PRIVATE Catholic

  • Grades Served: 9 – 12
  • 340 Students (All Boys)
  • Average Class Size: 20
  • Languages Offered: Spanish
  • School Day: 8am – 2:45pm
  • Opened in 1931
  • Tuition Range: $9,800 - $10,000 Per Year Average tuition for local Private Schools: $8,803
  • The cost includes a $280 Chrome Book for Freshman and $340 Registration fee.
  • 57% of students receive Financial Aid
  • Uniform Required
  • "St. Mary's is a Catholic High School educating young men in a Marianist Tradition."
  • Mayor Slay is an alum, class of 1973
  • 55 college credit hours are available through St. Louis University, Fontbonne University and St. Louis Community College
  • Special Education: Learning Consultant Program
  • Parent Involvement: "St. Mary's welcomes and encourages maximum engagement with parents/guardians of students through Mothers Club/ Fathers Club/ Coaching Opportunities/ Annual Auction, etc."



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  • Highly Diverse Economically30% of students qualify for Free or Reduced Lunch
  • Somewhat Diverse Racially

Test Scores

In 2017, the Average ACT Score for students was 22 22

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