#1 Private Schools with the Smallest Classes in Cook County, IL
Alcuin Montessori School
Montessori school · Grades Pre-K–8
3 students per teacher
Oak Park, IL
A+Overall grade90 students3 students per teacher
2026 lists
Private Schools with the Smallest Classes in Cook County, IL
Private schools in Cook County, IL with the fewest students per teacher (not counting preschools and special education schools). Top 50 of 277 schools.
#2 Private Schools with the Smallest Classes in Cook County, IL
Montessori Academy of Chicago
Montessori school · Grades Pre-K–6
3.2 students per teacher
Chicago, IL
A+Overall grade72 students3 students per teacher
#3 Private Schools with the Smallest Classes in Cook County, IL
Gems World Academy Chicago
Independent school · Grades Pre-K–12
3.3 students per teacher
Chicago, IL
A+Overall grade196 students3 students per teacher
#4 Private Schools with the Smallest Classes in Cook County, IL
The Chicago Academy for the Arts
Independent school · Grades 9–12
3.5 students per teacher
Chicago, IL
AOverall grade148 students4 students per teacher
#5 Private Schools with the Smallest Classes in Cook County, IL
Guidepost Montessori at Magnificent Mile
Montessori school · Grades K–6
3.8 students per teacher
Chicago, IL
B+Overall grade150 students4 students per teacher
#6 Private Schools with the Smallest Classes in Cook County, IL
Fasman Yeshiva High School
Jewish day school · Grades 9–12
3.8 students per teacher
Skokie, IL
AOverall gradeAll boys103 students4 students per teacher
#7 Private Schools with the Smallest Classes in Cook County, IL
South Loop Montessori School
Montessori school · Grades Pre-K–2
4 students per teacher
Chicago, IL
AOverall grade40 students4 students per teacher
#8 Private Schools with the Smallest Classes in Cook County, IL
Vine Academy
Independent school · Grades K–12
4.1 students per teacher
Burr Ridge, IL
AOverall grade109 students4 students per teacher
#9 Private Schools with the Smallest Classes in Cook County, IL
St. Bede the Venerable
Diocesan school · Grades 2–8
4.1 students per teacher
Chicago, IL
A+Overall grade56 students4 students per teacher
#10 Private Schools with the Smallest Classes in Cook County, IL
Intercultural Montessori Language School
Montessori school · Grades Pre-K–8
4.2 students per teacher
Chicago, IL
A+Overall grade133 students4 students per teacher
#11 Private Schools with the Smallest Classes in Cook County, IL
Unity Academy of Chicago
Islamic · Montessori · Grades Pre-K–4
4.2 students per teacher
Streamwood, IL
A-Overall grade42 students4 students per teacher
#12 Private Schools with the Smallest Classes in Cook County, IL
Unity Academy of Chicago
Islamic · Montessori · Grades Pre-K–4
4.2 students per teacher
Streamwood, IL
A-Overall grade42 students4 students per teacher
#13 Private Schools with the Smallest Classes in Cook County, IL
Genesis Scholars Academy
Religious school · Grades Pre-K–12
4.4 students per teacher
Chicago, IL
42 students4 students per teacher
#14 Private Schools with the Smallest Classes in Cook County, IL
Chicago City Day School
Independent school · Grades K–8
4.5 students per teacher
Chicago, IL
A+Overall grade130 students5 students per teacher
#15 Private Schools with the Smallest Classes in Cook County, IL
Chicago Futabakai Japanese School
Independent school · Grades Pre-K–9
4.5 students per teacher
Arlington Heights, IL
B+Overall grade111 students5 students per teacher
#16 Private Schools with the Smallest Classes in Cook County, IL
Josephinum Academy of the Sacred Heart
Independent Catholic school · Grades 9–12
4.5 students per teacher
Chicago, IL
A+Overall gradeAll girls90 students5 students per teacher
#17 Private Schools with the Smallest Classes in Cook County, IL
Sacred Heart School
Diocesan school · Grades Pre-K–8
4.7 students per teacher
Winnetka, IL
A+Overall grade90 students5 students per teacher
#18 Private Schools with the Smallest Classes in Cook County, IL
Fusion Academy Lincoln Park
Alternative school · Grades 6–12
4.7 students per teacher
Chicago, IL
AOverall grade57 students5 students per teacher
#19 Private Schools with the Smallest Classes in Cook County, IL
The Latin School of Chicago
Independent school · Grades K–4
4.9 students per teacher
Chicago, IL
A+Overall grade371 students5 students per teacher
#20 Private Schools with the Smallest Classes in Cook County, IL
Akiba-Schechter Jewish Day School
Jewish day school · Grades Pre-K–8
4.9 students per teacher
Chicago, IL
AOverall grade78 students5 students per teacher
#21 Private Schools with the Smallest Classes in Cook County, IL
Visitation Catholic School
Independent Catholic school · Grades Pre-K–8
5.1 students per teacher
Chicago, IL
A+Overall grade110 students5 students per teacher
#22 Private Schools with the Smallest Classes in Cook County, IL
Brickton Montessori School
Montessori school · Grades Pre-K–8
5.1 students per teacher
Chicago, IL
AOverall grade48 students5 students per teacher
#23 Private Schools with the Smallest Classes in Cook County, IL
Bernard Zell Anshe Emet Day School
Jewish day school · Grades Pre-K–8
5.2 students per teacher
Chicago, IL
AOverall grade332 students5 students per teacher
#24 Private Schools with the Smallest Classes in Cook County, IL
Roycemore School
Independent school · Grades Pre-K–12
5.3 students per teacher
Evanston, IL
A+Overall grade224 students5 students per teacher
From official public records, updated October 2026.