#1 Largest Private Schools in Rock Island County, IL
Seton Catholic School
Diocesan school · Grades Pre-K–8
360 students
Moline, IL
B+Overall grade360 students14 students per teacher
2026 lists
Largest Private Schools in Rock Island County, IL
The private schools in Rock Island County, IL with the most students. Top 6 of 6 schools.
#2 Largest Private Schools in Rock Island County, IL
Jordan Catholic School
Diocesan school · Grades Pre-K–8
295 students
Rock Island, IL
B+Overall grade295 students11 students per teacher
#3 Largest Private Schools in Rock Island County, IL
Alleman High School
Diocesan school · Grades 9–12
264 students
Rock Island, IL
B+Overall grade264 students13 students per teacher
#4 Largest Private Schools in Rock Island County, IL
Quad Cities Christian School
Christian school (nondenominational) · Grades 6–12
167 students
Moline, IL
B-Overall grade167 students13 students per teacher
#5 Largest Private Schools in Rock Island County, IL
Quad Cities Christian School Elementary
Christian school (nondenominational) · Grades Pre-K–5
130 students
Moline, IL
A+Overall grade130 students9 students per teacher
#6 Largest Private Schools in Rock Island County, IL
Our Lady of Grace
Diocesan school · Grades Pre-K–8
86 students
East Moline, IL
A+Overall grade86 students9 students per teacher
From official public records, updated October 2026.