#1 Fastest-Growing Private Schools in Illinois
Hadi School of Excellence
Islamic school · Grades Pre-K–8
Enrollment up 332% in about a decade
Schaumburg, IL
BOverall grade134 students9 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.
#2 Fastest-Growing Private Schools in Illinois
German International School Chicago
Independent school · Grades Pre-K–8
Enrollment up 322% in about a decade
Chicago, IL
A+Overall grade135 students6 students per teacher
#3 Fastest-Growing Private Schools in Illinois
Al-Huda Academy
Islamic school · Grades Pre-K–6
Enrollment up 272% in about a decade
Hanover Park, IL
A+Overall grade175 students13 students per teacher
#4 Fastest-Growing Private Schools in Illinois
Galesburg Christian School Assoc
Christian school (nondenominational) · Grades Pre-K–12
Enrollment up 260% in about a decade
Galesburg, IL
B+Overall grade198 students8 students per teacher
#5 Fastest-Growing Private Schools in Illinois
Maryville Christian School
Baptist school · Grades K–12
Enrollment up 251% in about a decade
Maryville, IL
B-Overall grade590 students13 students per teacher
#6 Fastest-Growing Private Schools in Illinois
Parkview Christian Academy
Christian school (nondenominational) · Grades Pre-K–12
Enrollment up 251% in about a decade
Yorkville, IL
B-Overall grade432 students14 students per teacher
#7 Fastest-Growing Private Schools in Illinois
St. Jude Catholic School
Parish school · Grades Pre-K–8
Enrollment up 228% in about a decade
Peoria, IL
BOverall grade243 students14 students per teacher
#8 Fastest-Growing Private Schools in Illinois
Families of Faith Christian Academy
Christian school (nondenominational) · Grades Pre-K–12
Enrollment up 216% in about a decade
Channahon, IL
B+Overall grade212 students11 students per teacher
#9 Fastest-Growing Private Schools in Illinois
Quad Cities Christian School
Christian school (nondenominational) · Grades 6–12
Enrollment up 215% in about a decade
Moline, IL
B-Overall grade167 students13 students per teacher
#10 Fastest-Growing Private Schools in Illinois
Furqaan Academy
Islamic school · Grades Pre-K–12
Enrollment up 197% in about a decade
Bolingbrook, IL
A+Overall grade178 students6 students per teacher
#11 Fastest-Growing Private Schools in Illinois
St. Benedict Preparatory School
Diocesan school · Grades Pre-K–8
Enrollment up 194% in about a decade
Chicago, IL
AOverall grade550 students11 students per teacher
#12 Fastest-Growing Private Schools in Illinois
Depaul College Prep
Independent Catholic school · Grades 9–12
Enrollment up 190% in about a decade
Chicago, IL
A+Overall grade1,245 students11 students per teacher
#13 Fastest-Growing Private Schools in Illinois
Our Lady Sacred Heart Academy
Independent Catholic school · Grades Pre-K–12
Enrollment up 187% in about a decade
Rockford, IL
A+Overall grade86 students6 students per teacher
#14 Fastest-Growing Private Schools in Illinois
Intercultural Montessori Language School
Montessori school · Grades Pre-K–8
Enrollment up 183% in about a decade
Chicago, IL
A+Overall grade133 students4 students per teacher
#15 Fastest-Growing Private Schools in Illinois
Montessori Academy of Chicago
Montessori school · Grades Pre-K–5
Enrollment up 174% in about a decade
Chicago, IL
AOverall grade145 students7 students per teacher
#16 Fastest-Growing Private Schools in Illinois
Naperville Christian Academy
Christian school (nondenominational) · Grades Pre-K–12
Enrollment up 168% in about a decade
Naperville, IL
A+Overall grade126 students6 students per teacher
#17 Fastest-Growing Private Schools in Illinois
Parkland Preparatory Academy
Special education school · Grades 1–12
Enrollment up 167% in about a decade
Oak Lawn, IL
B-Overall grade96 students12 students per teacher
#18 Fastest-Growing Private Schools in Illinois
Urban Prairie
Independent school · Grades Pre-K–8
Enrollment up 166% in about a decade
Chicago, IL
A+Overall grade101 students7 students per teacher
#19 Fastest-Growing Private Schools in Illinois
Old St. Marys School
Parish school · Grades K–8
Enrollment up 164% in about a decade
Chicago, IL
A+Overall grade419 students8 students per teacher
#20 Fastest-Growing Private Schools in Illinois
Faith Bible Christian Acad
Christian school (nondenominational) · Grades Pre-K–12
Enrollment up 164% in about a decade
Rosamond, IL
B+Overall grade111 students10 students per teacher
#21 Fastest-Growing Private Schools in Illinois
Parkland Preparatory Academy
Special education school · Grades 1–12
Enrollment up 159% in about a decade
Bartlett, IL
BOverall grade96 students9 students per teacher
#22 Fastest-Growing Private Schools in Illinois
Chicago Jesuit Academy
Independent Catholic school · Grades 3–8
Enrollment up 151% in about a decade
Chicago, IL
A+Overall grade246 students8 students per teacher
#23 Fastest-Growing Private Schools in Illinois
Guardian Angel Orthodox Day School
Greek Orthodox school · Grades Pre-K–8
Enrollment up 151% in about a decade
Des Plaines, IL
BOverall grade193 students9 students per teacher
#24 Fastest-Growing Private Schools in Illinois
Plato Academy
Independent school · Grades Pre-K–8
Enrollment up 151% in about a decade
Des Plaines, IL
AOverall grade93 students6 students per teacher
From official public records, updated October 2026.