#1 Private Schools with the Smallest Classes in St. Louis County, 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 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.
#2 Private Schools with the Smallest Classes in St. Louis County, 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 St. Louis County, 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 St. Louis County, 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 St. Louis County, 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 St. Louis County, 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 St. Louis County, 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 St. Louis County, MO
Grace Christian Academy
Christian school (nondenominational) · Grades K–8
5.3 students per teacher
Florissant, MO
A+Overall grade54 students5 students per teacher
#9 Private Schools with the Smallest Classes in St. Louis County, MO
City Academy
Independent school · Grades Pre-K–6
5.4 students per teacher
Saint Louis, MO
B+Overall grade182 students5 students per teacher
#10 Private Schools with the Smallest Classes in St. Louis County, 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
#11 Private Schools with the Smallest Classes in St. Louis County, 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
#12 Private Schools with the Smallest Classes in St. Louis County, 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
#13 Private Schools with the Smallest Classes in St. Louis County, 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
#14 Private Schools with the Smallest Classes in St. Louis County, MO
Community School
Independent school · Grades Pre-K–6
6.8 students per teacher
Saint Louis, MO
B+Overall grade305 students7 students per teacher
#15 Private Schools with the Smallest Classes in St. Louis County, MO
The Wilson School
Independent school · Grades Pre-K–6
6.8 students per teacher
Clayton, MO
A-Overall grade147 students7 students per teacher
#16 Private Schools with the Smallest Classes in St. Louis County, MO
The Fulton School
Montessori school · Grades Pre-K–12
6.8 students per teacher
Chesterfield, MO
B+Overall grade102 students7 students per teacher
#17 Private Schools with the Smallest Classes in St. Louis County, MO
Victory Christian Academy
Christian school (nondenominational) · Grades K–12
6.8 students per teacher
Saint Louis, MO
AOverall grade96 students7 students per teacher
#18 Private Schools with the Smallest Classes in St. Louis County, MO
St. Mark's Lutheran School
Lutheran (Missouri Synod) school · Grades Pre-K–8
7 students per teacher
Eureka, MO
AOverall grade42 students7 students per teacher
#19 Private Schools with the Smallest Classes in St. Louis County, MO
Salem Lutheran School
Lutheran (Missouri Synod) school · Grades Pre-K–8
7.4 students per teacher
Affton, MO
A+Overall grade84 students7 students per teacher
#20 Private Schools with the Smallest Classes in St. Louis County, MO
Missouri Torah Institute
Jewish day school · Grades 9–12
7.4 students per teacher
Chesterfield, MO
BOverall gradeAll boys73 students7 students per teacher
#21 Private Schools with the Smallest Classes in St. Louis County, MO
Principia School
Religious school · Grades Pre-K–12
7.7 students per teacher
Saint Louis, MO
A+Overall grade423 students8 students per teacher
#22 Private Schools with the Smallest Classes in St. Louis County, 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
#23 Private Schools with the Smallest Classes in St. Louis County, 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
#24 Private Schools with the Smallest Classes in St. Louis County, MO
Eyc Academy
Alternative school · Grades 3–12
7.7 students per teacher
Chesterfield, MO
AOverall grade56 students8 students per teacher
From official public records, updated October 2026.