For the 2026 school year, there are 2 public high schools serving 2,164 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 84%, which is less than the Delaware average of 89%.
The school with highest graduation rate is Penn (William) High School, with 84% graduation rate. Read more about public school graduation rate statistics in Delaware or national school graduation rate statistics.
Minority enrollment is 78% of the student body (majority Black), which is more than the Delaware public high school average of 62% (majority Black).
Best Public High Schools in New Castle, DE (2026)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Quick Facts
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
Gr: PK-12 | 95 students Student-teacher ratio: 6:1 Minority enrollment: 69%
Rank: #22.
Penn (William) High School
(Math: 11% | 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
Gr: 9-12 | 2,069 students Student-teacher ratio: 18:1 Minority enrollment: 79%
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 78% of the student body (majority Black), which is more than the Delaware public high schools average of 62% (majority Black).
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