Sanford School Photo

Best New Castle County Private High Schools (2025)

For the 2025 school year, there are 29 private high schools serving 10,405 students in New Castle County, DE.
The top ranked private high schools in New Castle County, DE include Archmere Academy, Salesianum School, and Tower Hill School.
The average tuition cost is $21,729, which is higher than the Delaware private high school average tuition cost of $19,119.
72% of private high schools in New Castle County, DE are religiously affiliated (most commonly Christian and Catholic).

Top Ranked New Castle County Private High Schools (2025)

School
Location
Quick Facts
Centreville Layton School
Centreville Layton School Photo - Beautiful campus
Alternative School
6201 Kennett Pike
Wilmington, DE 19807
(302) 571-0230
Gr: K-12 | 83 students Avg. class size: 8 students Sports: 6 Tuition & acceptance rate listed
Wilmington Friends School
Wilmington Friends School Photo - Quaker education teaches students that they share in the obligation to answer what is best in themselves and in others--developing talents to the fullest, and respecting the strengths, efforts, and perspectives of all.
(Friends)
(1)
101 School Road
Wilmington, DE 19803
(302) 576-2900
Gr: NS-12 | 690 students Avg. class size: 12 students Sports: 14 | Extracurrculars: 39 Tuition listed
Delaware Valley Classical School
Delaware Valley Classical School Photo - We see joy and gratitude as fundamentally part of the educational process: joy in learning true, good, and beautiful things and gratitude to God and to all who aid the students on their journey.
(Christian)
(19)
903 East Basin Road
New Castle, DE 19720
(302) 455-8740
Gr: K-12 | 211 students Avg. class size: 18 students Sports: 5 | Extracurrculars: 27 Tuition & acceptance rate listed
Archmere Academy
Archmere Academy Photo
(Catholic)
(7)
3600 Philadelphia Pike
Claymont, DE 19703
(302) 798-6632
Gr: 9-12 | 501 students Avg. class size: 15 students Sports: 20 | Extracurrculars: 38 Tuition listed
Augustine Hills School
Special Education School
6 Stone Hill Rd
Wilmington, DE 19803
(302) 594-0754
Gr: 6-12 | 15 students Tuition listed
Caravel Academy
2801 Del Laws Rd
Bear, DE 19701
(302) 834-8938
Gr: PK-12 | 1,117 student Avg. class size: 15 students Tuition & acceptance rate listed
Concord Christian Academy
Concord Christian Academy Photo - Concord Christian Academy
(Baptist)
(10)
2510 Marsh Road
Wilmington, DE 19810
(302) 475-3247
Gr: PK-12 | 196 students Avg. class size: 14 students Sports: 5 | Extracurrculars: 6 Tuition & acceptance rate listed
Padua Academy
All-girls (Catholic)
(2)
905 N Broom St
Wilmington, DE 19806
(302) 421-3739
Gr: 9-12 | 480 students Tuition listed
Red Lion Christian Academy
Red Lion Christian Academy Photo - ELEMENTARY PLAYGROUND
(Christian)
1390 Red Lion Road
Bear, DE 19701
(302) 834-5020
Gr: NS-12 | 942 students Avg. class size: 20 students Sports: 12 | Extracurrculars: 28 Tuition & acceptance rate listed
St. Andrew's School
(Episcopal)
350 Noxontown Rd
Middletown, DE 19709
(302) 285-4231
Gr: 9-12 | 315 students Sports: 15 Tuition listed
St. Elizabeth School
St. Elizabeth School Photo
(Catholic)
1500 Cedar St
Wilmington, DE 19805
(302) 656-3369
Gr: PK-12 | 433 students Avg. class size: 20 students Sports: 14 Tuition listed
Saint Mark's High School
Saint Mark's High School Photo
(Catholic)
(10)
2501 Pike Creek Road
Wilmington, DE 19808
(302) 757-8721
Gr: 9-12 | 716 students Avg. class size: 20 students Sports: 17 | Extracurrculars: 34 Tuition listed
Salesianum School
Salesianum School Photo
All-boys (Catholic)
(1)
1801 N Broom Street
Wilmington, DE 19802
(302) 654-2495
Gr: 9-12 | 930 students Avg. class size: 18 students Sports: 21 | Extracurrculars: 60 Tuition & acceptance rate listed
Sanford School
Sanford School Photo
(2)
6900 Lancaster Pike
Hockessin, DE 19707
(302) 235-6503
Gr: NS-12 | 685 students Avg. class size: 13 students Sports: 14 | Extracurrculars: 9 Tuition & acceptance rate listed
The Tatnall School
The Tatnall School Photo - Tatnall's 110-acre campus is located just west of Wilmington in Greenville, Delaware. Housing a National Wildlife Federation-accredited schoolyard habitat, five outdoor classrooms and bordering the Downs Nature Conservancy, the spacious campus provides expansive playing fields and opportunities for outdoor environmental study.
(13)
1501 Barley Mill Road
Wilmington, DE 19807
(302) 892-4296
Gr: NS-12 | 486 students Avg. class size: 12 students Sports: 15 | Extracurrculars: 9 Tuition listed
Tower Hill School
Tower Hill School Photo - Tower Hill School resides on a 44-acre campus with state-of- the-art athletic facilities and impressive academic and arts areas.
2813 W 17th Street
Wilmington, DE 19806
(302) 575-0550
Gr: NS-12 | 860 students Avg. class size: 15 students Sports: 16 | Extracurrculars: 24 Tuition & acceptance rate listed
Wilmington Christian School
Wilmington Christian School Photo
(Christian)
(1)
825 Loveville Rd
Hockessin, DE 19707
(302) 239-2121
Gr: PK-12 | 413 students Avg. class size: 20 students Sports: 10 Tuition & acceptance rate listed
Aquinas Academy
Aquinas Academy Photo
(Catholic)
2370 Red Lion Rd
Bear, DE 19701
(302) 838-9601
Gr: PK-12 | 91 students Avg. class size: 12 students Sports: 2 | Extracurrculars: 3 Tuition listed
Darul-Amaanah Academy
Darul-Amaanah Academy Photo - STEM Fun!
(Islamic)
19 Lambson Ln
Wilmington, DE 19720
(302) 274-2946
Gr: NS-12 | 40 students Avg. class size: 15 students Acceptance rate listed
Fairwinds Christian School
Fairwinds Christian School Photo
(Baptist)
(1)
801 Seymour Rd
Bear, DE 19701
(302) 328-7404
Gr: PK-12 | 227 students Avg. class size: 15 students Sports: 4 | Extracurrculars: 4 Tuition & acceptance rate listed
Glasgow Christian Academy
Alternative School (Presbyterian)
2880 Summit Bridge Rd
Bear, DE 19701
(302) 392-1090
Gr: NS-12 | 199 students Avg. class size: 15 students Sports: 12 | Extracurrculars: 2 Tuition listed
Harvest Christain Academy, Wilmington
(Christian)
2205 Lancaster Ave
Wilmington, DE 19805
(302) 276-7581
Gr: PK-12 | 199 students Avg. class size: 10 students Tuition & acceptance rate listed
2002 Rodman Rd
Wilmington, DE 19805
(302) 575-1266
Gr: 3-12 | 84 students
Highland Mennonite School
(Mennonite)
180 School Bell Road
Bear, DE 19701
(302) 328-9025
Gr: 1-10 | 22 students
Mt. Sophia Academy
Alternative School (Christian)
91 Salem Church Rd
Newark, DE 19713
(302) 547-2285
Gr: K-12 | 160 students Avg. class size: 15 students
Tarbiyah School
(Islamic)
698 Old Baltimore Pike
Newark, DE 19702
(302) 533-8114
Gr: PK-9 | 215 students
Towle Institute
Alternative School (Christian)
199 Polly Drummond Hill Road
Newark, DE 19711
(302) 993-1408
Gr: 4-12 | 36 students Avg. class size: 14 students Tuition listed
Towle Institute
(Christian)
1512 Brackenville Rd.
Hockessin, DE 19707
(302) 993-1408
Gr: 6-12 | 37 students Sports: 1 | Extracurrculars: 1 Tuition listed
Urban Promise Academy
2223 N Market St
Wilmington, DE 19802
(202) 679-0849
Gr: 7-11 | 22 students
[+] Show Closed Private Schools in New Castle County, Delaware

New Castle County Private Schools (Closed)

School
Location
Quick Facts
Advoserv (Closed 2020)
Special Education School
2520 Wrangle Hill Rd # 200
Bear, DE 19701
(302) 365-8050
Gr: NS | 86 students
907 New Rd
Wilmington, DE 19805
(302) 995-2231
Gr: PK-8 | 229 students Avg. class size: 20 students Tuition & acceptance rate listed
1401 Faulkland Road
Wilmington, DE 19805
(302) 633-1600
Gr: PK-K | 24 students
510 West 28 Street
Wilmington, DE 19802
(302) 762-4031
Gr: PK-8 | 106 students
5810-C Kirkwood Highway
Wilmington, DE 19808
(800) 677-7904
Gr: K-12 Tuition listed
502 N Pine St
Wilmington, DE 19801
(302) 656-1498
Gr: PK-4 | 43 students Avg. class size: 16 students Tuition & acceptance rate listed
100 Patriot Dr
Middletown, DE 19709
(302) 464-1171
Gr: PK-K | 118 students
614 Pulaski Highway
Bear, DE 19701
(302) 322-5040
Gr: NS-K
Church Drive Garfield Pk
New Castle, DE 19720
(302) 658-5345
Gr: PK-8 | 207 students
801 N Dupont Hwy
New Castle, DE 19720
(302) 328-2803
Gr: NS-8 | 324 students
304 S Harrison Street
Wilmington, DE 19805
(302) 594-1402
Gr: PK-8 | 183 students
210 Bellefonte Avenue
Wilmington, DE 19809
(302) 762-5595
Gr: K-8 | 190 students
515 Harmony St
New Castle, DE 19720
(302) 328-1191
Gr: PK-8 | 170 students Avg. class size: 17 students
201 Bayard Avenue
Wilmington, DE 19805
(302) 654-0746
Gr: PK-8 | 246 students
Super Kids (Closed 2017)
Daycare / Preschool
1411 Old Baltimore Pike
Newark, DE 19702
(302) 453-9373
Gr: PK-K | 85 students Avg. class size: 20 students Acceptance rate listed
400 N Ramunno Dr
Middletown, DE 19709
(302) 449-1711
Gr: K-1 | 30 students
Zion Early Education Center (Closed 2015)
Daycare / Preschool (Christian)
2101 Lancaster Ave
Wilmington, DE 19805
(302) 655-7874
Gr: PK-K | 25 students

Frequently Asked Questions

What are the top ranked private high schools in New Castle County, DE?
The top ranked private high schools in New Castle County, DE include Archmere Academy, Salesianum School, and Tower Hill School.
How many private high schools are located in New Castle County?
29 private high schools are located in New Castle County.
How much do private high schools cost in New Castle County?
The average tuition cost is $21,729, which is higher than the Delaware private school average tuition cost of $19,119.
How diverse are private high schools in New Castle County?
New Castle County private high schools are approximately 23% minority students, which is same as the Delaware private school average of 23%.
What percentage of private high schools are religiously affiliated in New Castle County?
72% of private high schools in New Castle County are religiously affiliated (most commonly Christian and Catholic).
Which private high schools in New Castle County are often viewed compared to one another?
Popular comparisons of private high schools in New Castle County include: High Road School Of Delaware vs. Centreville Layton School, Glasgow Christian Academy vs. Fairwinds Christian School

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