#1 Largest Private Schools in Lasalle County, IL
Marquette Academy
Diocesan school · Grades Pre-K–12
334 students
Ottawa, IL
BOverall grade334 students12 students per teacher
2026 lists
Largest Private Schools in Lasalle County, IL
The private schools in Lasalle County, IL with the most students. Top 8 of 8 schools.
#2 Largest Private Schools in Lasalle County, IL
St. Michael the Archangel Catholic School
Diocesan school · Grades Pre-K–8
158 students
Streator, IL
A+Overall grade158 students11 students per teacher
#3 Largest Private Schools in Lasalle County, IL
Holy Family Elementary School
Diocesan school · Grades Pre-K–8
126 students
Oglesby, IL
B+Overall grade126 students13 students per teacher
#4 Largest Private Schools in Lasalle County, IL
Holy Cross Elementary School
Diocesan school · Grades Pre-K–8
125 students
Mendota, IL
AOverall grade125 students11 students per teacher
#5 Largest Private Schools in Lasalle County, IL
Trinity Catholic Academy
Diocesan school · Grades Pre-K–8
113 students
La Salle, IL
A+Overall grade113 students10 students per teacher
#6 Largest Private Schools in Lasalle County, IL
Peru Catholic School
Diocesan school · Grades Pre-K–8
113 students
Peru, IL
A+Overall grade113 students10 students per teacher
#7 Largest Private Schools in Lasalle County, IL
Lighted Way Association
Special education school · Grades Pre-K–12
50 students
La Salle, IL
B+Overall grade50 students8 students per teacher
#8 Largest Private Schools in Lasalle County, IL
La Salle Peru Christian School
Baptist school · Grades Pre-K–12
45 students
La Salle, IL
AOverall grade45 students7 students per teacher
From official public records, updated October 2026.