#1 Largest Private Schools in Winnebago County, IL
Rockford Lutheran School
Lutheran (Missouri Synod) school · Grades Pre-K–12
695 students
Rockford, IL
BOverall grade695 students13 students per teacher
2026 lists
Largest Private Schools in Winnebago County, IL
The private schools in Winnebago County, IL with the most students. Top 19 of 19 schools.
#2 Largest Private Schools in Winnebago County, IL
Rockford Christian Schools
Christian school (nondenominational) · Grades Pre-K–12
639 students
Rockford, IL
BOverall grade639 students13 students per teacher
#3 Largest Private Schools in Winnebago County, IL
Boylan Catholic H. S.
Diocesan school · Grades 9–12
586 students
Rockford, IL
A+Overall grade586 students13 students per teacher
#4 Largest Private Schools in Winnebago County, IL
St. Bridget School
Diocesan school · Grades Pre-K–8
370 students
Loves Park, IL
B+Overall grade370 students15 students per teacher
#5 Largest Private Schools in Winnebago County, IL
Christian Life Schools
Assembly of God school · Grades Pre-K–12
363 students
Rockford, IL
B-Overall grade363 students15 students per teacher
#6 Largest Private Schools in Winnebago County, IL
Holy Family Catholic School
Parish school · Grades Pre-K–8
321 students
Rockford, IL
AOverall grade321 students13 students per teacher
#7 Largest Private Schools in Winnebago County, IL
Keith Country Day School
Independent school · Grades Pre-K–12
195 students
Rockford, IL
AOverall grade195 students8 students per teacher
#8 Largest Private Schools in Winnebago County, IL
Berean Baptist Christian School
Baptist school · Grades Pre-K–12
124 students
Rockford, IL
B+Overall grade124 students11 students per teacher
#9 Largest Private Schools in Winnebago County, IL
Rockford Iqra' School
Islamic school · Grades Pre-K–12
109 students
Rockford, IL
AOverall grade109 students7 students per teacher
#10 Largest Private Schools in Winnebago County, IL
Easterseals Academy
Special education school · Ungraded
95 students
Machesney Park, IL
B-Overall grade95 students10 students per teacher
#11 Largest Private Schools in Winnebago County, IL
Cathedral Baptist School
Baptist school · Grades Pre-K–12
94 students
Rockford, IL
AOverall grade94 students9 students per teacher
#12 Largest Private Schools in Winnebago County, IL
Our Lady Sacred Heart Academy
Independent Catholic school · Grades Pre-K–12
86 students
Rockford, IL
A+Overall grade86 students6 students per teacher
#13 Largest Private Schools in Winnebago County, IL
Alpine Academy
Lutheran (ELCA) school · Grades Pre-K–7
80 students
Rockford, IL
A+Overall grade80 students9 students per teacher
#14 Largest Private Schools in Winnebago County, IL
Montessori Private Academy
Montessori school · Grades Pre-K–6
54 students
Rockford, IL
AOverall grade54 students5 students per teacher
#15 Largest Private Schools in Winnebago County, IL
Concordia Lutheran School
Lutheran (Missouri Synod) school · Grades Pre-K–5
41 students
Machesney Park, IL
AOverall grade41 students8 students per teacher
#16 Largest Private Schools in Winnebago County, IL
Spectrum School
Independent school · Grades Pre-K–9
40 students
Rockford, IL
B+Overall grade40 students9 students per teacher
#17 Largest Private Schools in Winnebago County, IL
Alpine Christian School
Seventh-day Adventist school · Grades K–8
37 students
Rockford, IL
B+Overall grade37 students12 students per teacher
#18 Largest Private Schools in Winnebago County, IL
Veritas Christi Hybrid Academy
Christian school (nondenominational) · Grades 6–12
35 students
Rockford, IL
AOverall grade35 students4 students per teacher
#19 Largest Private Schools in Winnebago County, IL
Walter Lawson Childrens Home
Special education school · Grades K–12
20 students
Loves Park, IL
AOverall grade20 students5 students per teacher
From official public records, updated October 2026.