Important Dates


St. Mary's High School will participate in the following virtual High School Nights. 

September 24 - CLOSED
September 29 - CLOSED
October 5 - CLOSED
October 14 - REGISTER NOW

The presentation will address the school's Marianist mission, curriculum, academic requirements, extra-curricular activities, athletics, and other exciting St. Mary's High School news. St. Mary's students and staff will be available for questions.
Open House Postcard
Sunday, November 1, 2020
11:00 am - 2:00 p.m.

We hope you will consider visiting St. Mary's High School for our annual Open House. We are excited for families to see what has been happening on our campus! From physical improvements in our main building to the continuous accolades our faculty receive regarding their teaching skills, St. Mary's keeps getting better! If you have not visited us in a while, plan to make this one of your high school visits. It will be worth your time!
  • Tour the School and Athletic Facilities
  • Meet with our Administrative Team, Teachers, Parents, and Students
  • Enjoy Food and Drink
  • Participate in Student Activities
  • Win a $1000 scholarship for attending!
If you have any questions regarding Open House festivities, please contact the Sam Carel, Admissions Director, at 314.481.8400 ext. 110 or

 Unavailable  Shadow Program
 October 10  Dragon for a Day
 November 1  St. Mary's Open House 11:00 a.m. - 2:00 p.m.
 October 12  Archdiocesan Portal OPENS for Online Applications (Parish School Students Only)
 November 16 Archdiocesan Portal CLOSES
 January 6  Application Interviews
 February 4
 Acceptance Letters Mailed
 TBA  Incoming Freshmen Registration Night
 March 12  FACTS Tuition Assistance Applications DUE
 TBA  Incoming Freshmen Mass & Breakfast
 May  Notification of Tuition Assistance Awards