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

Best Delaware Private Schools Belonging to National Association of Independent Schools (NAIS) (2026-27)

For the 2026-27 school year, there are 18 private schools belonging to National Association of Independent Schools (NAIS) serving 5,890 students in Delaware. You can also find more schools membership associations in Delaware.
The top ranked private schools belonging to National Association of Independent Schools (NAIS) in Delaware include Sanford School, Tower Hill School, and Ursuline Academy.
The average tuition cost is $31,318, which is higher than the Delaware private school average tuition cost of $15,247.
56% of private schools belonging to National Association of Independent Schools (NAIS) in Delaware are religiously affiliated (most commonly Catholic and Amish).

Quick Facts (2026-27)

  • # Private Schools: 18

Quick Facts (2026-27)

  • # Private Schools: 18

Top Ranked Private Schools Belonging to National Association of Independent Schools (NAIS) in Delaware (2026-27)

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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Albert Einstein Academy Photo
Albert Einstein Academy
Gr: K-5 | 35 students
Avg. class size: 11 students
Specialized Curriculum (Jewish)
101 Garden Of Eden Rd
Wilmington, DE 19803
(302) 478-5026
(9)
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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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The Independence School Photo
The Independence School
Gr: NS-8 | 470 students
Avg. class size: 19 students
Sports: 11 | Extracurriculars: 13
1300 Paper Mill Road
Newark, DE 19711
(302) 239-0332
(3)
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Map of St. Andrew's School
St. Andrew's School
Gr: 9-12 | 318 students
Sports: 15
Episcopal
350 Noxontown Rd
Middletown, DE 19709
(302) 285-4231
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St. Annes Episcopal School Photo
St. Annes Episcopal School
Gr: NS-8 | 294 students
Avg. class size: 15 students
Sports: 6 | Extracurriculars: 8
Episcopal
211 Silver Lake Road
Middletown, DE 19709
(302) 378-3179
(1)
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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 | 691 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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Tower Hill School Photo
Tower Hill School
Gr: NS-12 | 870 students
Avg. class size: 15 students
Sports: 17 | Extracurriculars: 24
2813 W 17th Street
Wilmington, DE 19806
(302) 575-0550
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Ursuline Academy Photo
Ursuline Academy
Gr: PK-12 | 441 students
Avg. class size: 14 students
Sports: 15
Catholic
1106 Pennsylvania Avenue
Wilmington, DE 19806
(302) 658-7158
(10)
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Map of Coopers Corner School
Coopers Corner School
Gr: 1-8 | 25 students
Amish
2183 Honeysuckle Rd
Camden Wyoming, DE 19934
(302) 674-2374
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NCCL School (Newark Center for Creative Learning) Photo
NCCL School (Newark Center for Creative Learning)
Gr: K-8 | 63 students
Avg. class size: 10 students
Extracurriculars: 7
Specialized Curriculum
401 Phillips Avenue
Newark, DE 19711
(302) 368-7772
(8)
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The Pilot School Photo
The Pilot School
Gr: K-8
Avg. class size: 8 students
Sports: 7 | Extracurriculars: 9
Special Education School
208 Woodlawn Road
Wilmington, DE 19803
(302) 478-1740
(4)
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Map of Rose Valley School
Rose Valley School
Gr: 1-8 | 30 students
Amish
361 Rose Valley School Rd
Dover, DE 19904
(302) 734-7647
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Map of Southern Meadow School
Southern Meadow School
Gr: 1-8 | 23 students
Amish
2008 Jebb Rd
Camden Wyoming, DE 19934
(302) 697-2588
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Wilmington Montessori School Photo
Wilmington Montessori School
Gr: NS-8 | 162 students
Avg. class size: 13 students
Sports: 2 | Extracurriculars: 13
Montessori School
1400 Harvey Road
Wilmington, DE 19810
(302) 475-0555
(1)
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Frequently Asked Questions

What are the top ranked private schools belonging to National Association of Independent Schools (NAIS) in Delaware?
The top ranked private schools belonging to National Association of Independent Schools (NAIS) in Delaware include Sanford School, Tower Hill School, and Ursuline Academy.
How many private schools belonging to National Association of Independent Schools (NAIS) are located in Delaware?
18 private schools belonging to National Association of Independent Schools (NAIS) are located in Delaware.
How much do private schools belonging to National Association of Independent Schools (NAIS) cost in Delaware?
The average tuition cost is $31,318, which is higher than the Delaware private school average tuition cost of $15,247.
How diverse are private schools belonging to National Association of Independent Schools (NAIS) in Delaware?
Delaware private schools belonging to National Association of Independent Schools (NAIS) are approximately 28% minority students, which is higher than the Delaware private school average of 27%.
What percentage of private schools belonging to National Association of Independent Schools (NAIS) are religiously affiliated in Delaware?
56% of private schools belonging to National Association of Independent Schools (NAIS) in Delaware are religiously affiliated (most commonly Catholic and Amish).
18
Private Schools
5,890
Students
$31,318
Avg. Tuition
28%
Students of Color
8:1
Student-Teacher Ratio

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