Private School Review - Established 2003
Wilmington Friends School Top 3 · Highest Avg. ACT Score (DE)
Centreville Layton School Top 4 · Lowest Acceptance Rate (DE)
Saint Mark's High School Top 4 · Most AP Courses (DE)

Best Delaware Private High Schools Belonging to Delaware Association of Independent Schools (2026)

For the 2026 school year, there are 7 private high schools belonging to Delaware Association of Independent Schools serving 3,613 students in Delaware. You can also find more schools membership associations in Delaware.
The top ranked private high schools belonging to Delaware Association of Independent Schools in Delaware include The Tatnall School, Wilmington Friends School, and St. Elizabeth School.
The average acceptance rate is 75%, which is lower than the Delaware private high school average acceptance rate of 85%.
57% of private high schools belonging to Delaware Association of Independent Schools in Delaware are religiously affiliated (most commonly Catholic and Friends).

Quick Facts (2026)

  • # Private Schools: 7

Quick Facts (2026)

  • # Private Schools: 7

Top Ranked Private High Schools Belonging to Delaware Association of Independent Schools in Delaware (2026)

Centreville Layton School Photo
Centreville Layton School
Gr: K-12 | 97 students
Avg. class size: 8 students
Sports: 6
Alternative School
6201 Kennett Pike
Wilmington, DE 19807
(302) 571-0230
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Wilmington Friends School Photo
Wilmington Friends School
Gr: NS-12 | 709 students
Avg. class size: 12 students
Sports: 14 | Extracurriculars: 39
Friends
101 School Road
Wilmington, DE 19803
(302) 576-2900
(1)
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Archmere Academy Photo
Archmere Academy
Gr: 9-12 | 469 students
Avg. class size: 15 students
Sports: 20 | Extracurriculars: 38
Catholic
3600 Philadelphia Pike
Claymont, DE 19703
(302) 798-6632
(7)
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St. Elizabeth School Photo
St. Elizabeth School
Gr: PK-12 | 433 students
Avg. class size: 20 students
Sports: 14
Catholic
1500 Cedar St
Wilmington, DE 19805
(302) 656-3369
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Saint Mark's High School Photo
Saint Mark's High School
Gr: 9-12 | 716 students
Avg. class size: 20 students
Sports: 17 | Extracurriculars: 34
Catholic
2501 Pike Creek Road
Wilmington, DE 19808
(302) 757-8721
(10)
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Sanford School Photo
Sanford School
Gr: NS-12 | 703 students
Avg. class size: 13 students
Sports: 16
6900 Lancaster Pike
Hockessin, DE 19707
(302) 235-6503
(2)
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The Tatnall School Photo
The Tatnall School
Gr: NS-12 | 486 students
Avg. class size: 12 students
Sports: 15 | Extracurriculars: 9
1501 Barley Mill Road
Wilmington, DE 19807
(302) 892-4296
(15)
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Frequently Asked Questions

What are the top ranked private high schools belonging to Delaware Association of Independent Schools in Delaware?
The top ranked private high schools belonging to Delaware Association of Independent Schools in Delaware include The Tatnall School, Wilmington Friends School, and St. Elizabeth School.
How many private high schools belonging to Delaware Association of Independent Schools are located in Delaware?
7 private high schools belonging to Delaware Association of Independent Schools are located in Delaware.
How diverse are private high schools belonging to Delaware Association of Independent Schools in Delaware?
Delaware private high schools belonging to Delaware Association of Independent Schools are approximately 23% minority students, which is lower than the Delaware private school average of 26%.
What percentage of private high schools belonging to Delaware Association of Independent Schools are religiously affiliated in Delaware?
57% of private high schools belonging to Delaware Association of Independent Schools in Delaware are religiously affiliated (most commonly Catholic and Friends).
7
Private Schools
3,613
Students
$30,278
Avg. Tuition
23%
Students of Color
9:1
Student-Teacher Ratio

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