St. Mary's South Side Catholic High School

St. Mary's South Side Catholic High School

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St. Mary’s is a Catholic high school rooted in the Marianist tradition. Each person is seen as a child of God with gifts that will be called forth.

This community is a place where self actualization, diversity and life-long learning are encouraged. Mary’s is a place where the whole person can grow in the love of God and each other. This Marianist community is dedicated to developing responsible young men who are prepared to live as contributing and successful members of society who witness Jesus Christ to the world. Mary's Men are:
Embodied in Faith
Empowered by Excellence
Embraced as Family
Enlightened through Service
Transformed for Life

06/19/2026

Today, we honor Juneteenth and celebrate freedom, resilience, and the enduring pursuit of justice. May we continue to learn from the past, celebrate the dignity of every person, and work toward a brighter future for all.

Photos from St. Mary's South Side Catholic High School's post 06/17/2026

A Senior Night throwback for two Dragons who helped make this season one to remember. Noah and RJ led by example through their hard work, dedication, and commitment to their teammates. Thank you for everything you've given to Dragon Baseball and the St. Mary's SSC community.

Once a Dragon, always a Dragon. ⚾

06/17/2026

Thank you to Ditto for selecting us as a recipient of a Ditto Education Grant! 🏈

This generous gift will provide brand-new shoulder pads for our football team, helping keep our Dragons safe and protected as they prepare for the 2026 season. We are grateful for this investment in our student-athletes and the future of Dragon Football!

Our next Ditto Education Grant goes to St. Mary's South Side Catholic High School and will fund brand-new shoulder pads for the football team just in time for the fall 2026 season! 🏈

The team's current pads were last replaced in 2015, and this new gear will help keep players safe and protected on the field for the next 10 years

Through competitive sports, St. Mary's athletes build character that serves them far beyond the game. They develop the resilience, self-discipline, and leadership skills that enable them to excel in the classroom and prepare for the future.

We are so grateful for the community of shoppers and donors who make these education grants possible. Thank you for making an impact with us! We have one more grant announcement remaining—stay tuned!

06/11/2026

From the halls of St. Mary’s to serving the city he calls home. 💚💙

Congratulations to Nick Menendez ’19 on graduating from the St. Louis Police Academy alongside his brother, Mike. After serving our country in the U.S. Army Nick has returned home to continue a life of service and leadership as a St. Louis police officer.

We are proud to see another Dragon using his talents to make a difference in the community that helped shape him. Congratulations, Nick! We’re proud of you and grateful for your commitment to serving others. 🐉

https://www.stltoday.com/news/local/crime-courts/article_0f934960-2a37-415b-bc2a-ef0b550992a2.html -source=home-top-story

06/09/2026

Congratulations to G. Que McBroom ’21 on signing with the UFL St. Louis Battlehawks 🏈

Watching one of our own chase his dreams and earn this opportunity is what the Dragon Brotherhood is all about. The work you've put in, the challenges you've overcome, and the way you've represented St. Mary’s every step of the way make us proud to call you a Dragon.

Bring home that championship next year, Que! 🐉

05/28/2026

Living out our mission extends far beyond the classroom walls. Through initiatives like our annual Day of Service, partnership with the St. Joseph Housing Initiative, and projects led by our students, St. Mary’s continues to make a meaningful impact across South St. Louis. Recently, members of our Service Club assembled Blessing Bags to support those in need throughout our community. We are proud of these young men and their commitment to serving others.
The Marianist Province of the US - Brothers and Priests

05/25/2026

Today, we remember and honor the brave men and women who made the ultimate sacrifice for our country. Their courage, service, and selflessness will never be forgotten. 🐉🇺🇸

We also extend a special thank you to all those within our Dragon community who have served and continue to serve our nation with pride and honor. Your commitment and sacrifice inspire us all.

05/24/2026

Summer hours = officially activated 😎☀️

Woohoo! Another incredible year at St. Mary’s South Side Catholic is in the books. Wishing our entire Dragon community a safe, relaxing, and well-deserved summer break. 🐉💚

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Location

Category

Telephone

Address


4701 South Grand Boulevard
St. Louis, MO

Opening Hours

Monday 8am - 3:30pm
Tuesday 8am - 3:30pm
Wednesday 8am - 3:30pm
Thursday 8am - 3:30pm
Friday 8am - 3pm