For the 2025 school year, there are 2 public high schools serving 2,163 students in New Castle, DE.
The top ranked public high schools in New Castle, DE are Leach (John G.) School and Penn (William) High School. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.
New Castle, DE public high schools have an average math proficiency score of 13% (versus the Delaware public high school average of 33%), and reading proficiency score of 32% (versus the 51% statewide average). High schools in New Castle have an average ranking of 2/10, which is in the bottom 50% of Delaware public high schools.
New Castle, DE public high school have a Graduation Rate of 88%, which is equal to the Delaware average of 88%.
The school with highest graduation rate is Penn (William) High School, with 88% graduation rate. Read more about public school graduation rate statistics in Delaware or national school graduation rate statistics.
Minority enrollment is 76% of the student body (majority Black), which is more than the Delaware public high school average of 60% (majority Black).
Best Public High Schools in New Castle, DE (2025)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Grades
Students
Rank: #11.
Leach (John G.) School
Special Education School
(Math: <50% | Reading: <50%)
Rank:
Rank:
9/
Top 20%10
10 Landers Lane
New Castle, DE 19720
(302) 429-4055
New Castle, DE 19720
(302) 429-4055
Grades: PK-12
| 86 students
Rank: #22.
Penn (William) High School
(Math: 12% | Reading: 32%)
Rank:
Rank:
3/
Bottom 50%10
713 East Basin Road
New Castle, DE 19720
(302) 323-2800
New Castle, DE 19720
(302) 323-2800
Grades: 9-12
| 2,077 students
New Castle, Delaware Public Schools (Closed)
School
Location
Grades
Students
Baylor Womens Correctional Institution (Closed 2010)
Alternative School
660 Baylor Boulevard
New Castle, DE 19720
(302) 577-3004
New Castle, DE 19720
(302) 577-3004
Grades: Inquire with school
| n/a students
29 Chase Avenue
New Castle, DE 19720
(302) 429-4000
New Castle, DE 19720
(302) 429-4000
Grades: PK-5
| 882 students
801 North Dupont Highway
New Castle, DE 19720
(302) 322-6050
New Castle, DE 19720
(302) 322-6050
Grades: 9-12
| 228 students
109 Lukens Drive
New Castle, DE 19720
(302) 993-6993
New Castle, DE 19720
(302) 993-6993
Grades: n/a
| n/a students
Multiple Alternative Program High School (Closed 2010)
Alternative School
626 Wilmington Road
New Castle, DE 19720
(302) 322-1718
New Castle, DE 19720
(302) 322-1718
Grades: 9-12
| 72 students
903 Delaware Street
New Castle, DE 19720
(302) 323-2880
New Castle, DE 19720
(302) 323-2880
Grades: 6-8
| 557 students
New Castle School (Colonial Ilc) (Closed 2014)
Special Education School
903 Delaware St
New Castle, DE 19720
(302) 323-2880
New Castle, DE 19720
(302) 323-2880
Grades: n/a
| n/a students
287 Christiana Rd
New Castle, DE 19720
(302) 325-6508
New Castle, DE 19720
(302) 325-6508
Grades: 1-12
| n/a students
170 Lukens Dr
New Castle, DE 19720
(302) 573-7760
New Castle, DE 19720
(302) 573-7760
Grades: 9-12
| 411 students
170 Lukens Drive
New Castle, DE 19720
(302) 654-3720
New Castle, DE 19720
(302) 654-3720
Grades: K-8
| n/a students
Frequently Asked Questions
What are the top ranked public high schools in New Castle, DE?
The top ranked public high schools in New Castle, DE include Leach (John G.) School and Penn (William) High School.
How many public high schools are located in New Castle?
2 public high schools are located in New Castle.
What is the racial composition of students in New Castle?
New Castle public high schools minority enrollment is 76% of the student body (majority Black), which is more than the Delaware public high schools average of 60% (majority Black).
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