Best Illinois Private High Schools Belonging to Christian Schools International (CSI) (2025-26)

For the 2025-26 school year, there are 6 private high schools belonging to Christian Schools International (CSI) serving 1,551 students in Illinois. You can also find more schools membership associations in Illinois.
The top ranked private high schools belonging to Christian Schools International (CSI) in Illinois include Illiana Christian High School, Parkview Christian Academy, and Chicago Christian High School.
The average acceptance rate is 91%, which is higher than the Illinois private high school average acceptance rate of 82%.
100% of private high schools belonging to Christian Schools International (CSI) in Illinois are religiously affiliated (most commonly Christian and Calvinist).

Top Ranked Private High Schools Belonging to Christian Schools International (CSI) in Illinois (2025-26)

School
Location
Quick Facts
Chicago Christian High School
(Christian)
12001 S Oak Park Ave
Palos Heights, IL 60463
(708) 388-7650
Gr: 9-12 | 490 students Tuition & acceptance rate listed
2261 Indiana Ave
Lansing, IL 60438
(219) 558-7066
Gr: 9-12 | 474 students Avg. class size: 22 students Tuition listed
Parkview Christian Academy
(Christian)
(3)
202 East Countryside Parkway
Yorkville, IL 60560
(630) 553-5158
Gr: PK-12 | 394 students Avg. class size: 20 students Sports: 9 | Extracurrculars: 5 Tuition listed
Elim Christian School
Special Education School (Calvinist)
(4)
13020 S Central Ave
Palos Heights, IL 60463
(708) 389-0555
Gr: 10-12 | 4 students
1236 North 10th St.
Quincy, IL 62301
(217) 223-5698
Gr: PK-12 | 39 students
Unity Christian Elementary School
(Christian)
1000 11th Ave
Fulton, IL 61252
(815) 589-3912
Gr: K-12 | 150 students Avg. class size: 12 students

Recent Articles

Understanding Private School Tuition in 2025
Understanding Private School Tuition in 2025
Explore updated private school tuition trends, costs, policy shifts, and financial planning insights for 2025 families considering private education.
Private School Curriculum in 2025: Key Courses and Trends
Private School Curriculum in 2025: Key Courses and Trends
Explore what private schools are teaching in 2025, from core subjects and AI to global studies and tuition trends shaping private education today.
Sliding-Scale & Income-Based Tuition Models for Private Schools
Sliding-Scale & Income-Based Tuition Models for Private Schools
Learn how sliding-scale and income-based tuition models work and whether they are right for your family. Compare costs, eligibility, and school options.