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Best public schools in New Castle, DE

15 public schools in New Castle: 8 elementary · 3 middle · 1 high · 1 K-8 · 1 combined · 1 schools. Ranked by our score, based on 2025-26 state test results.

Rankings renumber to share equal ranks and fill gaps when schools are hidden. Scores compare each school with schools of the same type across Delaware.

Elementary schools

8 schools in New Castle, best first
1
Eisenberg (Harry O.) Elementary School 24.2
Colonial School District · Grades K-5 · 415 students
ELA 31%Math 29%Science 26%
#71 of 93 in Delaware
2
Pleasantville Elementary School 19.9
Colonial School District · Grades K-5 · 384 students
ELA 27%Math 23%Science 20%
#75 of 93 in Delaware
3
Castle Hills Elementary School 18.8
Colonial School District · Grades K-5 · 479 students
ELA 25%Math 22%Science 19%
#76 of 93 in Delaware
4
Wilmington Manor Elementary School 15.6
Colonial School District · Grades K-5 · 368 students
ELA 24%Math 21%Science 16%
#79 of 93 in Delaware
5
New Castle Elementary School 11.3
Colonial School District · Grades K-5 · 388 students
ELA 22%Math 21%
#83 of 93 in Delaware
6
Southern Elementary School 10.2
Colonial School District · Grades K-5 · 743 students
ELA 19%Math 22%Science 12%
#84 of 93 in Delaware
7
Downie (Carrie) Elementary School 7.0
Colonial School District · Grades K-5 · 356 students
ELA 18%Math 17%Science 13%
#87 of 93 in Delaware
–
The Colwyck Center —
Colonial School District · Grades PK · 198 students
No published test results

Middle schools

3 schools in New Castle, best first
1
Bedford (Gunning) Middle School 30.0
Colonial School District · Grades 6-8 · 908 students
ELA 27%Math 17%Science 9%
#25 of 35 in Delaware
2
Read (George) Middle School 24.3
Colonial School District · Grades 6-8 · 688 students
ELA 27%Math 14%Science 8%
#27 of 35 in Delaware
3
McCullough (Calvin R. ) Middle School 4.3
Colonial School District · Grades 6-8 · 625 students
ELA 17%Math 10%Science 3%
#34 of 35 in Delaware

High schools

1 school in New Castle
1
Penn (William) High School 24.2
Colonial School District · Grades 9-12 · 2,077 students
ELA 22%Math 9%Science 14%
#24 of 31 in Delaware

K-8 schools

1 school in New Castle
1
Charter School of New Castle 57.7
Charter School of New Castle · Grades K-8 · Charter · 764 students
ELA 32%Math 23%Science 12%
#6 of 13 in Delaware

Combined schools

1 school in New Castle
–
Leach (John G.) School —
Colonial School District · Grades PK-12 · 86 students
No published test results

Schools

1 school in New Castle
–
The Wallace Wallin School —
Colonial School District · Grades UG · 0 students
No published test results

School districts serving New Castle

Nearby cities and towns