For the 2026-27 school year, there are 81 catholic private high schools serving 38,249 students in Illinois. You can also find more religiously affiliated schools in Illinois.
The top ranked catholic private high schools in Illinois include Mount Carmel High School, Holy Trinity High School, and Benet Academy.
The average tuition cost is $11,287, which is lower than the Illinois private high school average tuition cost of $15,329.
Quick Facts (26-27)
- # Private Schools: 81
- # Students Served: 38,249













