Brehm Preparatory School Photo - Small class sizes provide opportunities for 1:1 educational moments.

Best Illinois Private Schools Belonging to The Association of Boarding Schools (TABS) (2026)

For the 2026 school year, there are 3 private schools belonging to The Association of Boarding Schools (TABS) serving 602 students in Illinois. You can also find more schools membership associations in Illinois.
The top-ranked private schools belonging to The Association of Boarding Schools (TABS) in Illinois include Woodlands Academy Of The Sacred Heart and Lake Forest Academy.
The average acceptance rate is 66%, which is lower than the Illinois private school average acceptance rate of 85%.
33% of private schools belonging to The Association of Boarding Schools (TABS) in Illinois are religiously affiliated (most commonly Catholic).

Top-Ranked Private Schools Belonging to The Association of Boarding Schools (TABS) in Illinois (2026)

School
Location
Quick Facts
Lake Forest Academy
Lake Forest Academy Photo - Located on the former estate of J. Odgen Armour, various historical and modern buildings comprise Lake Forest Academy's 150-acre campus, including the Cressey Center for the Arts, the Reyes Family Science Center, and a newly expanded athletic center.
1500 W Kennedy Rd
Lake Forest, IL 60045
(847) 615-3257
Gr: 9-12 | 452 students Avg. class size: 12 students Sports: 15 | Extracurrculars: 25 Tuition & acceptance rate listed
Woodlands Academy Of The Sacred Heart
All-girls (Catholic)
760 E Westleigh Rd
Lake Forest, IL 60045
(847) 234-4300
Gr: 9-12 | 120 students Avg. class size: 10 students Tuition & acceptance rate listed
Brehm Preparatory School
Brehm Preparatory School Photo - Small class sizes provide opportunities for 1:1 educational moments.
Special Education School
(3)
900 S. Brehm Lane
Carbondale, IL 62901
(618) 457-0371
Gr: 6-12 | 30 students Avg. class size: 5 students Sports: 3 | Extracurrculars: 10 Tuition listed

Recent Articles

Navigating Private School Finances 2026
Navigating Private School Finances 2026
Essential 2026 guide for parents on private school costs, financial aid, and planning strategies.
Preparation for Standardized Tests & College Admissions 2026
Preparation for Standardized Tests & College Admissions 2026
A 2026 guide for private school test prep and college admissions strategies, with insights, trends, and best practices for families and educators.
Mental Health & Wellness Support in Private Schools: Key Questions for Parents
Mental Health & Wellness Support in Private Schools: Key Questions for Parents
Discover essential questions about mental health & wellness support in private schools before enrolling, with 2026 updates for informed decisions.