For the 2026 school year, there are 5 private high schools belonging to Association of Delaware Valley Independent Schools (ADVIS) serving 2,863 students in Delaware. You can also find more schools membership associations in Delaware.
The top-ranked private high schools belonging to Association of Delaware Valley Independent Schools (ADVIS) in Delaware include The Tatnall School, Centreville Layton School, and Tower Hill School.
The average acceptance rate is 73%, which is lower than the Delaware private high school average acceptance rate of 87%.
40% of private high schools belonging to Association of Delaware Valley Independent Schools (ADVIS) in Delaware are religiously affiliated (most commonly Catholic).
Top-Ranked Private High Schools Belonging to Association of Delaware Valley Independent Schools (ADVIS) in Delaware (2026)
School
Location
Quick Facts
Centreville Layton School![Centreville Layton School Photo - Beautiful campus]( "Centreville Layton School Photo - Beautiful campus")
Alternative School
6201 Kennett Pike
Wilmington, DE 19807
(302) 571-0230
Wilmington, DE 19807
(302) 571-0230
Gr: K-12 | 97 students Avg. class size: 8 students Sports: 6 Tuition & acceptance rate listed
3600 Philadelphia Pike
Claymont, DE 19703
(302) 798-6632
Claymont, DE 19703
(302) 798-6632
Gr: 9-12 | 501 students Avg. class size: 15 students Sports: 20 | Extracurrculars: 38 Tuition listed
1801 N Broom Street
Wilmington, DE 19802
(302) 654-2495
Wilmington, DE 19802
(302) 654-2495
Gr: 9-12 | 930 students Avg. class size: 18 students Sports: 21 | Extracurrculars: 60 Tuition & acceptance rate listed
1501 Barley Mill Road
Wilmington, DE 19807
(302) 892-4296
Wilmington, DE 19807
(302) 892-4296
Gr: NS-12 | 486 students Avg. class size: 12 students Sports: 15 | Extracurrculars: 9 Tuition listed
2813 W 17th Street
Wilmington, DE 19806
(302) 575-0550
Wilmington, DE 19806
(302) 575-0550
Gr: NS-12 | 849 students Avg. class size: 15 students Sports: 17 | Extracurrculars: 24 Tuition & acceptance rate listed
Recent Articles
A Parent’s Guide to 2026 High School Teaching Methods
Explore 2026 high school teaching methods, from AI integration to project-based learning, and what they mean for your teen’s success.
10 Misconceptions About Private Schools in 2026
Discover the top misconceptions about private schools in 2026, including cost, diversity, academics, and admissions realities.
Private Schools & Sustainability in 2026
Explore how private schools are advancing sustainability in 2026 through green campuses, eco-curriculum, and climate leadership initiatives.
