Private School Review - Established 2003
Covenant Classical School Photo - We are committed to providing a rigorous, thought-provoking classical education that nurtures wisdom, cultivates virtue, and honors our Creator.
Covenant Classical School

Best Illinois Private High Schools Belonging to Association of Classical and Christian Schools (ACCS) (2025-26)

For the 2025-26 school year, there are 4 private high schools belonging to Association of Classical and Christian Schools (ACCS) serving 454 students in Illinois. You can also find more schools membership associations in Illinois.
The top ranked private high schools belonging to Association of Classical and Christian Schools (ACCS) in Illinois include Clapham School and Naperville Christian Academy.
The average acceptance rate is 89%, which is higher than the Illinois private high school average acceptance rate of 82%.
100% of private high schools belonging to Association of Classical and Christian Schools (ACCS) in Illinois are religiously affiliated (most commonly Christian).

Top Ranked Private High Schools Belonging to Association of Classical and Christian Schools (ACCS) in Illinois (2025-26)

School
Location
Quick Facts
Covenant Classical School
Covenant Classical School Photo - With small class sizes and individualized attention, our authentic Christian community ensures that every child feels seen, valued, and supported.
(Christian)
(14)
1571 Oswego Road
Naperville, IL 60540
(630) 983-7500
Gr: K-10 | 125 students Avg. class size: 14 students Sports: 1 | Extracurrculars: 23 Tuition & acceptance rate listed
Clapham School
Clapham School Photo
(Christian)
(1)
335 East Seminary Ave
Wheaton, IL 60187
(630) 547-5125
Gr: PK-12 | 126 students Avg. class size: 14 students Sports: 5 | Extracurrculars: 9 Tuition & acceptance rate listed
Naperville Christian Academy
Naperville Christian Academy Photo - Learning isn't boring, it is a great adventure; a journey through space and time into a world of beautiful words, wondrous ideas, and breathtaking images, in which we stand in awe of the Creator of it all and ask ourselves how what we learn can make us more like Him.
(Christian)
(2)
1451 Raymond Drive
Naperville, IL 60563
(630) 637-9622
Gr: PK-12 | 134 students Avg. class size: 10 students Sports: 1 | Extracurrculars: 15 Tuition & acceptance rate listed
Trinity Academy
(Christian)
306 E S St
Industry, IL 61440
(309) 731-4016
Gr: K-9 | 69 students

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