#1 Private Schools with the Smallest Classes in Wheaton, IL
Clapham School
Christian school (nondenominational) · Grades Pre-K–12
5.8 students per teacher
Wheaton, IL
AOverall grade145 students6 students per teacher
2026 lists
Private Schools with the Smallest Classes in Wheaton, IL
Private schools in Wheaton, IL with the fewest students per teacher (not counting preschools and special education schools). Top 5 of 5 schools.
#2 Private Schools with the Smallest Classes in Wheaton, IL
Prairie School of Dupage
Independent school · Grades Pre-K–8
7.8 students per teacher
Wheaton, IL
B+Overall grade73 students8 students per teacher
#3 Private Schools with the Smallest Classes in Wheaton, IL
Carriers of Light
Islamic school · Grades Pre-K–6
10.8 students per teacher
Wheaton, IL
B+Overall grade108 students11 students per teacher
#4 Private Schools with the Smallest Classes in Wheaton, IL
Wheaton Montessori School
Montessori school · Grades Pre-K–9
11.9 students per teacher
Wheaton, IL
B+Overall grade119 students12 students per teacher
#5 Private Schools with the Smallest Classes in Wheaton, IL
St. Francis High School
Independent Catholic school · Grades 9–12
13.3 students per teacher
Wheaton, IL
AOverall grade703 students13 students per teacher
From official public records, updated October 2026.