Quick Facts

Three high school students and a priest smile while having a conversation

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

Enrollment: 825 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 2020 average): 30.3 (top 10%), 26.1 (top 50%), 23.9 (overall average)
After graduation: 99% of St. Dominic graduates continue to postsecondary studies
Accreditation: AdvancED


Jim Welby

Jim Welby


School Calendar

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