Grades 9-121,087 students16.7 students per teacherRoman CatholicCo-ed94% to 4-year college
Private high schools in O'Fallon, MO
4 in O'Fallon or within 6 miles; schools in O'Fallon itself count at any distance from downtown. Private schools that teach grade 9 or above, going by each school’s grade span in the federal survey (or, for schools new since then, the state’s official list).
Grades PreK-12596 students13.4 students per teacherChristian (nondenominational)Co-ed79% to 4-year college
Grades K-1277 students6.3 students per teacherNonsectarianCo-ed
Grades PreK-912 students2 students per teacherChristian (nondenominational)Special program emphasisCo-ed
Private high schools near O'Fallon by the numbers
- Where
- 3 in O'Fallon, 1 within 6 miles
- Students
- about 1,772 in all; the typical school has 596
- Smallest and largest
- Future Apostle Academy, 12 students; St. Dominic High School, 1,087 students
- Students per teacher
- 13.4 typical, 2 to 16.7 across 4 schools
- Co-ed or single-sex
- all co-ed
- Association members
- 2, most often the National Catholic Educational Association
- Verified tuition
- St. Dominic High School $13,200; Christian School District $9,060
- State program
- Tax-credit scholarship, up to $7,145 per student for 2026-27, more for some students
How MOScholars works
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
- Catholic schools in O'Fallon
- Montessori 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
- Private high schools in Lake Saint Louis (3 mi)
- Private high schools in Saint Peters (6 mi)
- Private high schools in Wentzville (8 mi)
- Private high schools in Saint Charles (11 mi)
- Private high schools in Chesterfield (11 mi)
- Private high schools in Wildwood (14 mi)
- Private high schools in Ellisville (15 mi)
- Private high schools in Ballwin (16 mi)
- Private high schools across Missouri
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