Important Dates


St. Mary’s High School will participate in the following High School Nights. Three 20-minute presentations 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.
All begin promptly at 7:00 p.m.

Tuesday, September 10, 2019

Ursuline Academy

Tuesday, September 17, 2019

Rosati-Kain High School

Thursday, September 19, 2019

St. John Vianney High School

Thursday, September 26, 2019

St. Mary's High School

Tuesday, October 1, 2019

Villa Duchesne/Oak Hill High School

Thursday, October 3, 2019

Trinity Catholic High School


Sunday, November 3, 2019
12:00 - 4:00 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 keep receiving regarding their teaching; St. Mary’s keeps getting better! If you have not visited us in a while, we believe 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 Admissions Director at 314-481-8400 ext. 110 or at

 September 10  Shadow program begins
 October 4  Dragon for a Day
 November 3  St. Mary's Open House 12:00 - 4:00 p.m.
 Oct 14 - Nov 15  Archdiocesan Online Applications (Catholic School Students Only)
 January 8  Application Interviews
 January 31
 Acceptance Letters Mailed
 March 3  Incoming Freshmen Registration
 March 13  FACTS Tuition Assistance Applications DUE
 TBD  Incoming Freshmen Mass & Breakfast
 May  Notification of Tuition Assistance Awards