Top Rankings
Colonial School District ranks among the top 20% of public school district in Delaware for:
Category
Attribute
Community Size
Largest student body (number of students) (Top 1%)
For the 2025-26 school year, there are 2 public high schools serving 2,163 students in Colonial School District. This district's average high testing ranking is 3/10, which is in the bottom 50% of public high schools in Delaware.
Public High Schools in Colonial School District 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 52% statewide average).
Public High School in Colonial School District 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 76% of the student body (majority Black), which is more than the Delaware public high school average of 60% (majority Black).
Overview
This School District
This State (DE)
# Schools
15 Schools
57 Schools
# Students
8,778 Students
55,090 Students
# Teachers
609 Teachers
3,725 Teachers
Student-Teacher Ratio
14:1
14:1
Student By Grade
District Rank
Colonial School District, which is ranked within the bottom 50% of all 42 school districts in Delaware (based off of combined math and reading proficiency testing data) for the 2022-2023 school year.
The school district's graduation rate of 84% has increased from 80% over five school years.
Overall District Rank
#32 out of 42 school districts
(Bottom 50%)
(Bottom 50%)
Math Test Scores (% Proficient)
15%
31%
Reading/Language Arts Test Scores (% Proficient)
29%
42%
Science Test Scores (% Proficient)
11%
21%
Graduation Rate
84%
88%
Students by Ethnicity:
Diversity Score
0.69
0.72
% American Indian
1%
1%
% Asian
2%
5%
% Hispanic
22%
20%
% Black
45%
29%
% White
25%
40%
% Hawaiian
n/a
n/a
% Two or more races
5%
5%
All Ethnic Groups
District Revenue and Spending
The revenue/student of $23,415 is higher than the state median of $20,306. The school district revenue/student has grown by 11% over four school years.
The school district's spending/student of $21,634 is higher than the state median of $18,388. The school district spending/student has grown by 11% over four school years.
Total Revenue
$206 MM
$2,882 MM
Spending
$190 MM
$2,610 MM
Revenue / Student
$23,415
$20,306
Spending / Student
$21,634
$18,388
Best Colonial School District Public High Schools (2025-26)
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 | 86 students Student-teacher ratio: 5:1 Minority enrollment: 66%
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 | 2,077 students Student-teacher ratio: 17:1 Minority enrollment: 76%
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