#25 Private Schools with the Smallest Classes in St. Louis County, MO
Rosati-Kain High School
Independent Catholic school · Grades 9–12
7.8 students per teacher
Saint Louis, MO
A+Overall gradeAll girls127 students8 students per teacher
2026 lists
Private Schools with the Smallest Classes in St. Louis County, MO
Private schools in St. Louis County, MO with the fewest students per teacher (not counting preschools and special education schools). Top 50 of 117 schools.
From official public records, updated October 2026.