#1 Largest Private Schools in Des Plaines, IL
Science & Arts Academy
Independent school · Grades Pre-K–8
258 students
Des Plaines, IL
A+Overall grade258 students7 students per teacher
2026 lists
Largest Private Schools in Des Plaines, IL
The private schools in Des Plaines, IL with the most students. Top 5 of 5 schools.
#2 Largest Private Schools in Des Plaines, IL
Willows Academy
Independent Catholic school · Grades 6–12
241 students
Des Plaines, IL
A+Overall gradeAll girls241 students9 students per teacher
#3 Largest Private Schools in Des Plaines, IL
Guardian Angel Orthodox Day School
Greek Orthodox school · Grades Pre-K–8
193 students
Des Plaines, IL
BOverall grade193 students9 students per teacher
#4 Largest Private Schools in Des Plaines, IL
Plato Academy
Independent school · Grades Pre-K–8
93 students
Des Plaines, IL
AOverall grade93 students6 students per teacher
#5 Largest Private Schools in Des Plaines, IL
Maryville Jen School
Special education school · Grades 8–12
47 students
Des Plaines, IL
AOverall grade47 students3 students per teacher
From official public records, updated October 2026.