#49 Fastest-Growing Private Schools in Illinois
St. Michael the Archangel School
Parish school · Grades Pre-K–8
Enrollment up 85% in about a decade
Sigel, IL
B-Overall grade189 students17 students per teacher
2026 lists
Fastest-Growing Private Schools in Illinois
Private schools in Illinois whose enrollment has grown the most over the past decade. Top 50 of 139 schools.
#50 Fastest-Growing Private Schools in Illinois
Yeshivas Tiferes Tzvi
Jewish day school · Grades K–8
Enrollment up 84% in about a decade
Chicago, IL
B-Overall gradeAll boys550 students10 students per teacher
From official public records, updated October 2026.