#1 Largest Private Schools in Chicago, IL
Univ of Chicago Lab School
Independent school · Grades Pre-K–12
1,946 students
Chicago, IL
A+Overall grade1,946 students8 students per teacher
2026 lists
Largest Private Schools in Chicago, IL
The private schools in Chicago, IL with the most students. Top 50 of 185 schools.
#2 Largest Private Schools in Chicago, IL
St. Ignatius College Prep
Independent Catholic school · Grades 9–12
1,492 students
Chicago, IL
B+Overall grade1,492 students16 students per teacher
#3 Largest Private Schools in Chicago, IL
Depaul College Prep
Independent Catholic school · Grades 9–12
1,245 students
Chicago, IL
A+Overall grade1,245 students11 students per teacher
#4 Largest Private Schools in Chicago, IL
Joan Dachs Bais Yaakov Elementary School
Jewish day school · Grades Pre-K–8
844 students
Chicago, IL
B-Overall gradeAll girls844 students15 students per teacher
#5 Largest Private Schools in Chicago, IL
Joan Dachs Bais Yaakov Elementary School
Jewish day school · Grades K–8
844 students
Chicago, IL
B-Overall gradeAll girls844 students12 students per teacher
#6 Largest Private Schools in Chicago, IL
Latin School of Chicago Upper
Independent school · Grades 5–12
806 students
Chicago, IL
BOverall grade806 students11 students per teacher
#7 Largest Private Schools in Chicago, IL
Mother McAuley Liberal Arts High School
Independent Catholic school · Grades 9–12
794 students
Chicago, IL
AOverall gradeAll girls794 students13 students per teacher
#8 Largest Private Schools in Chicago, IL
De La Salle Institute - Institute Campus
Independent Catholic school · Grades 9–12
765 students
Chicago, IL
A-Overall grade765 students16 students per teacher
#9 Largest Private Schools in Chicago, IL
Frances Xavier Warde School
Independent Catholic school · Grades Pre-K–8
745 students
Chicago, IL
A+Overall grade745 students6 students per teacher
#10 Largest Private Schools in Chicago, IL
Lycee Francais De Chicago
Independent school · Grades Pre-K–12
687 students
Chicago, IL
A+Overall grade687 students6 students per teacher
#11 Largest Private Schools in Chicago, IL
BR Rice High School
Independent Catholic school · Grades 9–12
658 students
Chicago, IL
BOverall gradeAll boys658 students16 students per teacher
#12 Largest Private Schools in Chicago, IL
British International School of Chicago South Loop
Independent school · Grades Pre-K–12
641 students
Chicago, IL
BOverall grade641 students9 students per teacher
#13 Largest Private Schools in Chicago, IL
British International School of Chicago South Loop
Independent school · Grades Pre-K–12
638 students
Chicago, IL
BOverall grade638 students10 students per teacher
#14 Largest Private Schools in Chicago, IL
Mount Carmel High School
Independent Catholic school · Grades 9–12
588 students
Chicago, IL
A+Overall gradeAll boys588 students11 students per teacher
#15 Largest Private Schools in Chicago, IL
Sacred Heart Schools
Independent Catholic school · Grades Pre-K–8
556 students
Chicago, IL
A+Overall grade556 students10 students per teacher
#16 Largest Private Schools in Chicago, IL
Sacred Heart Schools
Independent Catholic school · Grades Pre-K–8
556 students
Chicago, IL
AOverall grade556 students10 students per teacher
#17 Largest Private Schools in Chicago, IL
St. Benedict Preparatory School
Diocesan school · Grades Pre-K–8
550 students
Chicago, IL
AOverall grade550 students11 students per teacher
#18 Largest Private Schools in Chicago, IL
Yeshivas Tiferes Tzvi
Jewish day school · Grades K–8
550 students
Chicago, IL
B-Overall gradeAll boys550 students10 students per teacher
#19 Largest Private Schools in Chicago, IL
Cristo Rey Jesuit High School
Independent Catholic school · Grades 9–12
537 students
Chicago, IL
B-Overall grade537 students17 students per teacher
#20 Largest Private Schools in Chicago, IL
St. Juliana School
Diocesan school · Grades Pre-K–8
477 students
Chicago, IL
B-Overall grade477 students15 students per teacher
#21 Largest Private Schools in Chicago, IL
Resurrection College Prep High School
Parish school · Grades 9–12
454 students
Chicago, IL
A-Overall gradeAll girls454 students14 students per teacher
#22 Largest Private Schools in Chicago, IL
Immaculate Conception School
Independent Catholic school · Grades Pre-K–8
445 students
Chicago, IL
BOverall grade445 students17 students per teacher
#23 Largest Private Schools in Chicago, IL
St. John Fisher Elementary School
Diocesan school · Grades Pre-K–8
443 students
Chicago, IL
B+Overall grade443 students12 students per teacher
#24 Largest Private Schools in Chicago, IL
St. Barnabas Elementary School
Parish school · Grades Pre-K–8
433 students
Chicago, IL
BOverall grade433 students15 students per teacher
From official public records, updated October 2026.