For the 2026-27 school year, there are 879 religiously affiliated private schools serving 188,171 students in Illinois (54% of all schools).
The average tuition cost is $7,637, which is lower than the Illinois private school average tuition cost of $10,412.
The most common religiously affiliated schools are Catholic (48% of schools), Christian (16% of schools) and Lutheran Church Missouri Synod (13% of schools).
Quick Facts (26-27)
- # Private Schools: 879
- # Students Served: 188,171
