#25 Private Schools with the Smallest Classes in St. Charles County, MO
St. Joseph School
Parish school · Grades Pre-K–8
19.8 students per teacher
Saint Charles, MO
B-Overall grade891 students20 students per teacher
2026 lists
Private Schools with the Smallest Classes in St. Charles County, MO
Private schools in St. Charles County, MO with the fewest students per teacher (not counting preschools and special education schools). Top 25 of 25 schools.
From official public records, updated October 2026.