#1 Most Diverse Private Schools in Jefferson County, MO
St. Joseph Catholic School
Diocesan school · Grades Pre-K–8
Largest group: 91% of students
Imperial, MO
BOverall grade330 students13 students per teacher
2026 lists
Most Diverse Private Schools in Jefferson County, MO
Private schools in Jefferson County, MO with the most varied mix of students. Top 6 of 6 schools.
#2 Most Diverse Private Schools in Jefferson County, MO
St. Johns Lutheran School
Lutheran (Missouri Synod) school · Grades Pre-K–8
Largest group: 91% of students
Arnold, MO
BOverall grade173 students13 students per teacher
#3 Most Diverse Private Schools in Jefferson County, MO
Our Lady Catholic School
Parish school · Grades Pre-K–8
Largest group: 92% of students
Festus, MO
BOverall grade181 students12 students per teacher
#4 Most Diverse Private Schools in Jefferson County, MO
Holy Child Catholic School
Parish school · Grades Pre-K–8
Largest group: 93% of students
Arnold, MO
BOverall grade191 students14 students per teacher
#5 Most Diverse Private Schools in Jefferson County, MO
St. Pius X Catholic High School
Diocesan school · Grades 6–8
Largest group: 94% of students
Festus, MO
BOverall grade154 students13 students per teacher
#6 Most Diverse Private Schools in Jefferson County, MO
St. Rose of Lima School
Independent Catholic school · Grades Pre-K–8
Largest group: 95% of students
De Soto, MO
B+Overall grade95 students10 students per teacher
From official public records, updated October 2026.