About
- Rooted in Our Community St. Dominic is a Catholic, comprehensive, coeducational high school with deep ties to our area parishes and communities.
- Our Campus, Our Home Our 50-acre campus is among the largest of any Catholic high school in the St. Louis area.
Admissions
- Apply to St. Dominic Learn more about how to join the St. Dominic family.
- Visit Us on Campus Experience life at St. Dominic firsthand with a shadow visit or personal tour.
Academics
- College Preparatory Education With dual-credit courses, individual college guidance and more, 99% of our graduates continue to higher education.
- Leadership in STEM We offer hands-on computer science, engineering and biomedical sciences courses through Project Lead the Way.
Faith
- Living Our Faith Prayer is an essential part of life at St. Dominic, whether in classes or practices, during Adoration or at all-school Masses.
- Walking with Christ Students reflect and grow through retreats at each stage of the high school experience.
Student Life
- Explore Your World Our 40 clubs and organizations offer new experiences and leadership opportunities.
- A Day in the Life St. Dominic is more than a school – it’s a second home. See what a typical day might have in store for you.
Arts
- Take a Bow Students can shine onstage or behind the scenes in the Crusader Players' four annual stage productions.
- Center Stage Take a peek at the 500-seat Amy Dickherber Performing Arts Center.
Athletics
- Crusader Spirit The St. Dominic Crusaders compete in 24 varsity sports.
- Home of the Crusaders Tour our athletic facilities, from Crusader Stadium to our state-of-the-art fitness center.
Giving
- Called to Lead Join us in making the 42,000-sq.-ft. Center for the Sciences a reality.
- Ways to Give Explore our many giving options to find the best fit for you and your family.

In This Section

Quick Facts

St. Dominic High School is a Catholic, college preparatory school for young men and women in grades 9-12.

Enrollment: 1,028 students
History: Founded in 1929 as Assumption High School Learn more
Campus: 50 acres in O’Fallon, Missouri Learn more
Our community: Students from St. Charles, Lincoln, Warren and St. Louis counties
Student-teacher ratio: 14:1
ACT scores (Class of 2022 average): 31.75 (top 10%), 26.05 (top 50%), 22.17 (overall average)
After graduation: 95% of St. Dominic graduates continue to postsecondary studies
Accreditation: AdvancED