Grades 9-121,087 students16.7 students per teacherRoman CatholicCo-ed94% to 4-year college
Catholic schools in O'Fallon, MO
6 in O'Fallon or within 6 miles. Parochial, diocesan and independent Catholic schools.
Grades PreK-8715 students19.2 students per teacherRoman CatholicCo-ed
Grades PreK-8374 students13.7 students per teacherRoman CatholicCo-ed
Grades PreK-8891 students19.8 students per teacherRoman CatholicCo-ed
Grades PreK-8125 students7.1 students per teacherRoman CatholicCo-ed
Grades PreK-8222 students19.1 students per teacherRoman CatholicCo-ed
Catholic schools near O'Fallon by the numbers
- Where
- 2 in O'Fallon, 4 within 6 miles
- Students
- about 3,414 in all; the typical school has 715
- Smallest and largest
- All Saints School, 125 students; St. Dominic High School, 1,087 students
- Students per teacher
- 19.1 typical, 7.1 to 19.8 across 6 schools
- Co-ed or single-sex
- all co-ed
- Association members
- 6, most often the National Catholic Educational Association
- Verified tuition
- St. Dominic High School $13,200; Assumption Catholic School $6,940
- State program
- Tax-credit scholarship, up to $7,145 per student for 2026-27, more for some students
How MOScholars works
- Pre-K (and up)5
- Elementary (K to 5)5
- Middle (6 to 8)5
- High school (9 to 12)1
- 50 to 1491
- 150 to 2991
- 300 to 5991
- 600 or more3
Where these facts come from
- Grades, size, affiliation, co-ed, membership, college-going: NCES Private School Universe Survey 2023-24, downloaded September 20, 2026.
- Award and rules: MOScholars, official page, read October 7, 2026.
- Tuition for 2 schools: each school’s own website, last read October 5, 2026.
Keep looking
- All private schools near O'Fallon
- Christian schools in O'Fallon
- Montessori schools in O'Fallon
- Private high schools in O'Fallon
- Private elementary schools in O'Fallon
- Private middle schools in O'Fallon
- Private schools with pre-K in O'Fallon
- Lutheran schools in O'Fallon
- Catholic schools in Lake Saint Louis (3 mi)
- Catholic schools in Saint Peters (6 mi)
- Catholic schools in Wentzville (8 mi)
- Catholic schools in Saint Charles (11 mi)
- Catholic schools in Chesterfield (11 mi)
- Catholic schools in Wildwood (14 mi)
- Catholic schools in Ellisville (15 mi)
- Catholic schools in Ballwin (16 mi)
- Catholic schools across Missouri
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