#1 Private Schools with the Smallest Classes in Jefferson County, MO
St. Rose of Lima School
Independent Catholic school · Grades Pre-K–8
9.5 students per teacher
De Soto, MO
B+Overall grade95 students10 students per teacher
2026 lists
Private Schools with the Smallest Classes in Jefferson County, MO
Private schools in Jefferson County, MO with the fewest students per teacher (not counting preschools and special education schools). Top 6 of 6 schools.
#2 Private Schools with the Smallest Classes in Jefferson County, MO
Our Lady Catholic School
Parish school · Grades Pre-K–8
12 students per teacher
Festus, MO
BOverall grade181 students12 students per teacher
#3 Private Schools with the Smallest Classes in Jefferson County, MO
St. Pius X Catholic High School
Diocesan school · Grades 6–8
12.9 students per teacher
Festus, MO
BOverall grade154 students13 students per teacher
#4 Private Schools with the Smallest Classes in Jefferson County, MO
St. Joseph Catholic School
Diocesan school · Grades Pre-K–8
13.1 students per teacher
Imperial, MO
BOverall grade330 students13 students per teacher
#5 Private Schools with the Smallest Classes in Jefferson County, MO
St. Johns Lutheran School
Lutheran (Missouri Synod) school · Grades Pre-K–8
13.4 students per teacher
Arnold, MO
BOverall grade173 students13 students per teacher
#6 Private Schools with the Smallest Classes in Jefferson County, MO
Holy Child Catholic School
Parish school · Grades Pre-K–8
13.5 students per teacher
Arnold, MO
BOverall grade191 students14 students per teacher
From official public records, updated October 2026.