#1 Private Schools with the Smallest Classes in Saint Louis, MO
The St. Michael School of Clayton
Episcopal school · Grades Pre-K–8
3.2 students per teacher
Saint Louis, MO
A+Overall grade71 students3 students per teacher
2026 lists
Private Schools with the Smallest Classes in Saint Louis, MO
Private schools in Saint Louis, MO with the fewest students per teacher (not counting preschools and special education schools). Top 50 of 74 schools.
#2 Private Schools with the Smallest Classes in Saint Louis, MO
Rohan Woods School
Independent school · Grades Pre-K–6
3.4 students per teacher
Saint Louis, MO
A+Overall grade68 students3 students per teacher
#3 Private Schools with the Smallest Classes in Saint Louis, MO
Torah Prep School of St. Louis
Jewish day school · Grades Pre-K–8
3.5 students per teacher
Saint Louis, MO
B+Overall grade227 students4 students per teacher
#4 Private Schools with the Smallest Classes in Saint Louis, MO
H.F. Epstein Hebrew Academy
Jewish day school · Grades Pre-K–12
3.5 students per teacher
Saint Louis, MO
A-Overall grade109 students4 students per teacher
#5 Private Schools with the Smallest Classes in Saint Louis, MO
Villa Duchesne School
Independent Catholic school · Grades Pre-K–12
3.8 students per teacher
Saint Louis, MO
A+Overall grade459 students4 students per teacher
#6 Private Schools with the Smallest Classes in Saint Louis, MO
Thomas Jefferson School
Independent school · Grades 7–12
4 students per teacher
Saint Louis, MO
A+Overall grade74 students4 students per teacher
#7 Private Schools with the Smallest Classes in Saint Louis, MO
The Waldorf School of St. Louis
Independent school · Grades Pre-K–8
4 students per teacher
Saint Louis, MO
AOverall grade56 students4 students per teacher
#8 Private Schools with the Smallest Classes in Saint Louis, MO
City Academy
Independent school · Grades Pre-K–6
5.4 students per teacher
Saint Louis, MO
B+Overall grade182 students5 students per teacher
#9 Private Schools with the Smallest Classes in Saint Louis, MO
Saul Mirowitz Jewish Community School
Jewish day school · Grades K–8
5.7 students per teacher
Saint Louis, MO
B+Overall grade149 students6 students per teacher
#10 Private Schools with the Smallest Classes in Saint Louis, MO
Crossroads College Preparatory School
Independent school · Grades 7–12
6.3 students per teacher
Saint Louis, MO
A+Overall grade125 students6 students per teacher
#11 Private Schools with the Smallest Classes in Saint Louis, MO
Marian Middle School
Independent Catholic school · Grades 6–8
6.3 students per teacher
Saint Louis, MO
A+Overall gradeAll girls44 students6 students per teacher
#12 Private Schools with the Smallest Classes in Saint Louis, MO
The College School
Alternative school · Grades Pre-K–8
6.7 students per teacher
Saint Louis, MO
A-Overall grade179 students7 students per teacher
#13 Private Schools with the Smallest Classes in Saint Louis, MO
Community School
Independent school · Grades Pre-K–6
6.8 students per teacher
Saint Louis, MO
B+Overall grade305 students7 students per teacher
#14 Private Schools with the Smallest Classes in Saint Louis, MO
Victory Christian Academy
Christian school (nondenominational) · Grades K–12
6.8 students per teacher
Saint Louis, MO
AOverall grade96 students7 students per teacher
#15 Private Schools with the Smallest Classes in Saint Louis, MO
Principia School
Religious school · Grades Pre-K–12
7.7 students per teacher
Saint Louis, MO
A+Overall grade423 students8 students per teacher
#16 Private Schools with the Smallest Classes in Saint Louis, MO
Christian Academy of Greater St. Louis
Church of Christ school · Grades Pre-K–12
7.7 students per teacher
Saint Louis, MO
A+Overall grade103 students8 students per teacher
#17 Private Schools with the Smallest Classes in Saint Louis, MO
Little Flower Catholic School
Parish school · Grades K–8
7.7 students per teacher
Saint Louis, MO
A+Overall grade80 students8 students per teacher
#18 Private Schools with the Smallest Classes in Saint Louis, 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
#19 Private Schools with the Smallest Classes in Saint Louis, MO
Loyola Academy of St. Louis
Independent Catholic school · Grades 4–8
8 students per teacher
Saint Louis, MO
AOverall gradeAll boys77 students8 students per teacher
#20 Private Schools with the Smallest Classes in Saint Louis, MO
Holy Cross Academy - Primary Campus
Diocesan school · Grades K–2
8.1 students per teacher
Saint Louis, MO
A-Overall grade97 students8 students per teacher
#21 Private Schools with the Smallest Classes in Saint Louis, MO
Providence Academy
Christian school (nondenominational) · Grades Pre-K–12
8.2 students per teacher
Saint Louis, MO
A-Overall grade150 students8 students per teacher
#22 Private Schools with the Smallest Classes in Saint Louis, MO
St. Louis Priory School
Independent Catholic school · Grades 7–12
8.4 students per teacher
Saint Louis, MO
A+Overall gradeAll boys299 students8 students per teacher
#23 Private Schools with the Smallest Classes in Saint Louis, MO
Central Christian School
Presbyterian school · Grades Pre-K–6
8.8 students per teacher
Saint Louis, MO
A+Overall grade171 students9 students per teacher
#24 Private Schools with the Smallest Classes in Saint Louis, MO
Micds
Independent school · Grades Pre-K–12
8.9 students per teacher
Saint Louis, MO
A+Overall grade1,220 students9 students per teacher
From official public records, updated October 2026.