#1 Most Diverse Private Schools in O'Fallon, MO
First Baptist Christian Academy
Baptist school · Grades Pre-K–8
Largest group: 76% of students
O'Fallon, MO
B+Overall grade163 students11 students per teacher
2026 lists
Most Diverse Private Schools in O'Fallon, MO
Private schools in O'Fallon, MO with the most varied mix of students. Top 5 of 5 schools.
#2 Most Diverse Private Schools in O'Fallon, MO
Christian School District
Christian school (nondenominational) · Grades Pre-K–12
Largest group: 87% of students
O'Fallon, MO
B-Overall grade596 students12 students per teacher
#3 Most Diverse Private Schools in O'Fallon, MO
Christian School District
Christian school (nondenominational) · Grades Pre-K–12
Largest group: 88% of students
O'Fallon, MO
B-Overall grade596 students13 students per teacher
#4 Most Diverse Private Schools in O'Fallon, MO
Assumption Catholic School
Parish school · Grades Pre-K–8
Largest group: 91% of students
O'Fallon, MO
B-Overall grade374 students14 students per teacher
#5 Most Diverse Private Schools in O'Fallon, MO
St. Dominic High School
Diocesan school · Grades 9–12
Largest group: 92% of students
O'Fallon, MO
B-Overall grade1,087 students17 students per teacher
From official public records, updated October 2026.