#1 Private Schools with the Smallest Classes in Downers Grove, IL
Avery Coonley School
Independent school · Grades Pre-K–8
7.4 students per teacher
Downers Grove, IL
AOverall grade290 students7 students per teacher
2026 lists
Private Schools with the Smallest Classes in Downers Grove, IL
Private schools in Downers Grove, 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 Downers Grove, IL
Marquette Manor Baptist Academy
Baptist school · Grades Pre-K–12
12.9 students per teacher
Downers Grove, IL
BOverall grade135 students13 students per teacher
#3 Private Schools with the Smallest Classes in Downers Grove, IL
St. Mary of Gostyn Catholic School
Parish school · Grades Pre-K–8
14.7 students per teacher
Downers Grove, IL
BOverall grade419 students15 students per teacher
#4 Private Schools with the Smallest Classes in Downers Grove, IL
Downers Grove Christian School
Baptist school · Grades Pre-K–8
15.3 students per teacher
Downers Grove, IL
BOverall grade153 students15 students per teacher
#5 Private Schools with the Smallest Classes in Downers Grove, IL
St. Joseph
Diocesan school · Grades Pre-K–8
15.9 students per teacher
Downers Grove, IL
BOverall grade371 students16 students per teacher
From official public records, updated October 2026.