Better Education. Brighter Future


Parents of Trinity Catholic students are vital members of our school community. Trinity Catholic recognizes the sacrifices parents make to ensure their children receive a quality Catholic education. Thus, we strive to keep the parents involved in the school community as much as possible. Throughout the school year there are numerous opportunities for parents to strengthen their connection to the school community. Our Trinity Parent Organization (TPO) and the Titan Booster Club are two organizations open to all parents of the Trinity community. These incredible networks of parents put on several events throughout the year, including Trivia Nights, Spirit events for Titan Athletic teams, and informational events.

As a Trinity Catholic Parent, you contribute to the school in ways you may not even recognize. Please, do not hesitate to inquire about getting more involved. See the TPO and Booster club sections of the website, or call the main office for more information.

A Message from Sr. Karl Mary Winkelmann 

Dear Families of Trinity Catholic High School,

There will be a parents meeting on Monday, April 24 at 6:30 to follow up on the meeting about racial diversity held on February 21. An action plan has been created and we want to inform everyone of the progress made thus far. Please plan on attending on Monday, April 24 at 6:30 in the cafeteria.

In the Trinity,
Sr. Karl Mary Winkelmann

 Student Accident Insurance 

Student Accident Insurance Information

2016-2017 Dress Code

TCHS 2016-2017 Dress Code




2016 Dinner Auction Committee

Looking for a way to get involved and support Trinity Catholic? The 2016 Trinity Treasures Dinner Auction Committee will be held Saturday, October 15, 2016. The Chairpersons are excited to begin organizing another fun and successful auction. Meetings will begin March 8th and occur on the 2nd Tuesday of every month at 6:30 p.m. at Trinity Catholic High School. 


Have TCHS Uniforms that don't fit?

The Bookstore is always looking for slightly worn TCHS uniform donations. If you have any uniforms that are not being used be sure to bring them to the Bookstore! For more information contact Cheryl Walsh, or at 314-741-1333. 


Prom Dress Code Guidelines:

Please follow this link to read a summary of DO's and DONT's for the 2016 Prom. These dress code guidelines will be strictly enforced. Be sure to review the information prior to making purchases for Prom attire. These guidelines have been put in place to ensure that Prom 2016 is enjoyed by all!


New Late Start Policy

Effective January 1, 2016, students who arrive to school on late start days before 9:00 a.m. must report for supervised study hall in Room 116. Please see the list below for Fall 2016 Semester Late Start Days. 


September 7, 2016
October 5, 2016
October 19, 2016
November 9, 2016
November 30, 2016
December 14, 2016



Archdiocese of St. Louis:

'Safe Environment Program'

The Safe Environment Program, as outlined by the Archdiocese of Saint Louis, requires all employees and volunteers who will be working with or near children or youth to comply with specific requirements. These requirements are listed in the Archdiocese Safe Environment Program Form. 

Some of these requirements include, but are not limited to:

For information regarding volunteer opportunities at Trinity Catholic High School, please contact the school office at 314-741-1333.

For additional information regarding the Archdiocese of Saint Louis Safe Environment Program or to inquire about how you can become a certified, Archdiocesan volunteer, contact:

Sandra PriceDirector of the Safe Environment Program

314-792-7271 or