For the 2025-26 school year, there are 13 private schools serving 4,580 students in O Fallon, MO (there are 23 public schools, serving 13,751 public students). 25% of all K-12 students in O Fallon, MO are educated in private schools (compared to the MO state average of 12%).
The top ranked private schools in O Fallon, MO include Assumption School, First Baptist Christian Academy, and Christian School District.
The average acceptance rate is 97%, which is higher than the Missouri private school average acceptance rate of 85%.
Top Ranked O Fallon Private Schools (2025-26)
School
Location
Quick Facts
Assumption School![Assumption School Photo - For 154 years, Assumption School has been a beacon of faith and learning in O'Fallon, and we are proud to continue that tradition with 465+ students enrolled this year in preschool through 8th grade! If you are you looking for a school that combines rigorous academics, cutting-edge technology, and a faith-based education, this is the place to be!]( "Assumption School Photo - For 154 years, Assumption School has been a beacon of faith and learning in O'Fallon, and we are proud to continue that tradition with 465+ students enrolled this year in preschool through 8th grade! If you are you looking for a school that combines rigorous academics, cutting-edge technology, and a faith-based education, this is the place to be!")
(Catholic)
203 W 3rd St
O Fallon, MO 63366
(636) 240-4474
O Fallon, MO 63366
(636) 240-4474
Gr: PK-8 | 431 students Avg. class size: 20 students Sports: 5 | Extracurrculars: 9 Tuition & acceptance rate listed
Christian School District![Christian School District Photo]( "Christian School District Photo")
(Christian)
1145 Tom Ginnever Ave
O Fallon, MO 63366
(636) 978-1680
O Fallon, MO 63366
(636) 978-1680
Gr: PK-12 | 546 students Avg. class size: 15 students Sports: 15 Tuition & acceptance rate listed
8750 Veterans Memorial Pkwy
O Fallon, MO 63366
(636) 272-3220
O Fallon, MO 63366
(636) 272-3220
Gr: PK-6 | 277 students Avg. class size: 13 students Tuition & acceptance rate listed
Immaculate Conception School![Immaculate Conception School Photo - Our School Front]( "Immaculate Conception School Photo - Our School Front")
(Catholic)
2089 Hanley Road
O Fallon, MO 63368
(636) 561-4450
O Fallon, MO 63368
(636) 561-4450
Gr: PK-8 | 877 students Sports: 4 | Extracurrculars: 16 Tuition listed
OakHaven Montessori School![OakHaven Montessori School Photo]( "OakHaven Montessori School Photo")
Montessori School
7267 Highway N
O Fallon, MO 63368
(636) 978-4440
O Fallon, MO 63368
(636) 978-4440
Gr: PK-6 | 94 students Avg. class size: 25 students Sports: 3 | Extracurrculars: 6 Tuition listed
St. Charles Christian Home Educators
Special Program Emphasis (Christian)
709 Crestview Drive
O Fallon, MO 63366
(636) 240-4412
O Fallon, MO 63366
(636) 240-4412
Gr: K-12 | 388 students Avg. class size: 7 students Extracurrculars: 2 Tuition listed
St. Dominic High School
(Catholic)
31 Saint Dominic Dr
O Fallon, MO 63366
(636) 240-8303
O Fallon, MO 63366
(636) 240-8303
Gr: 9-12 | 927 students Avg. class size: 24 students Sports: 14 | Extracurrculars: 6 Tuition & acceptance rate listed
Veritas Christian Academy![Veritas Christian Academy Photo]( "Veritas Christian Academy Photo")
(Christian)
1145 Tom Ginnever Ave
O Fallon, MO 63366
(636) 978-1680
O Fallon, MO 63366
(636) 978-1680
Gr: NS-12 | 664 students Avg. class size: 15 students Sports: 14 | Extracurrculars: 15 Tuition & acceptance rate listed
The Goddard School![The Goddard School Photo]( "The Goddard School Photo")
Daycare / Preschool
9008 Phoenix Parkway
O Fallon, MO 63368
(636) 561-8559
O Fallon, MO 63368
(636) 561-8559
Gr: PK-K | 44 students
St. Paul Continuation School![St. Paul Continuation School Photo]( "St. Paul Continuation School Photo")
(Catholic)
1235 Church Rd
O Fallon, MO 63366
(636) 978-1900
O Fallon, MO 63366
(636) 978-1900
Gr: PK-8 | 270 students Avg. class size: 15 students
Wonder Years
Daycare / Preschool
7104 Twin Chimneys Blvd
O Fallon, MO 63368
(636) 978-3240
O Fallon, MO 63368
(636) 978-3240
Gr: K | 50 students
Frequently Asked Questions
What are the top ranked private schools in O Fallon, MO?
The top ranked private schools in O Fallon, MO include Assumption School, First Baptist Christian Academy, and Christian School District.
How many private schools are located in O Fallon?
13 private schools are located in O Fallon.
How diverse are private schools in O Fallon?
O Fallon private schools are approximately 7% minority students, which is lower than the Missouri private school average of 20%.
What percentage of students in O Fallon go to private school?
25% of all K-12 students in O Fallon are educated in private schools (compared to the MO state average of 12%).
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