#1 Largest Private Schools in Oak Lawn, IL
St. Catherine of Alexandria School
Parish school · Grades Pre-K–8
414 students
Oak Lawn, IL
BOverall grade414 students15 students per teacher
2026 lists
Largest Private Schools in Oak Lawn, IL
The private schools in Oak Lawn, IL with the most students. Top 5 of 5 schools.
#2 Largest Private Schools in Oak Lawn, IL
St. Linus Elementary School
Diocesan school · Grades Pre-K–8
302 students
Oak Lawn, IL
BOverall grade302 students14 students per teacher
#3 Largest Private Schools in Oak Lawn, IL
St. Gerald School
Diocesan school · Grades Pre-K–8
233 students
Oak Lawn, IL
A+Overall grade233 students13 students per teacher
#4 Largest Private Schools in Oak Lawn, IL
St. Germaine School
Parish school · Grades Pre-K–8
173 students
Oak Lawn, IL
A+Overall grade173 students12 students per teacher
#5 Largest Private Schools in Oak Lawn, IL
Parkland Preparatory Academy
Special education school · Grades 1–12
96 students
Oak Lawn, IL
B-Overall grade96 students12 students per teacher
From official public records, updated October 2026.