Serving 1,063 students in grades Kindergarten-5, Wilbur (Kathleen H.) Elementary School ranks in the top 50% of all schools in Delaware for overall test scores (math proficiency is top 50%, and reading proficiency is top 50%).
The percentage of students achieving proficiency in math is 30% (which is lower than the Delaware state average of 31%). The percentage of students achieving proficiency in reading/language arts is 41% (which is lower than the Delaware state average of 42%).
The student-teacher ratio of 15:1 is higher than the Delaware state level of 14:1.
Minority enrollment is 73% of the student body (majority Black), which is higher than the Delaware state average of 61% (majority Black).
Quick Facts (2026)
- Grades: Kindergarten-5
- Enrollment: 1,063 students
- Student-Teacher Ratio: 15:1
- Minority Enrollment: 73%
- Overall Testing Rank: Top 50% in DE
- Math Proficiency: 30% (Top 50%)
- Reading Proficiency: 41% (Top 50%)
- Science Proficiency: 22% (Top 50%)
- Source: National Center for Education Statistics (NCES), DE Dept. of Education
School Overview
Wilbur (Kathleen H.) Elementary School's student population of 1,063 students has declined by 8% over five school years.
The teacher population of 71 teachers has stayed relatively flat over five school years.
Grades Offered
Grades Kindergarten-5
(No virtual instruction)
(No virtual instruction)
Total Students
1,063 students
Gender %
Total Classroom Teachers
71 teachers
Last Day of School
Mon. May 25, 2026
School Motto
‘inspire excellence in ALL of our students to ensure they reach their highest potential in academic achievement, as well as in social and interpersonal skills.'
School Rankings
Wilbur (Kathleen H.) Elementary School ranks within the top 50% of all 199 schools in Delaware (based off of combined math and reading proficiency testing data).
The diversity score of Wilbur (Kathleen H.) Elementary School is 0.70, which is less than the diversity score at state average of 0.71. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#92 out of 199 schools
(Top 50%)
(Top 50%)
Math Test Scores (% Proficient)
30%
31%
Reading/Language Arts Test Scores (% Proficient)
41%
42%
Science Test Scores (% Proficient)
22%
21%
Student-Teacher Ratio
15:1
14:1
American Indian
n/a
n/a
Asian
4%
4%
Hispanic
17%
20%
Black
45%
31%
White
27%
39%
Hawaiian
n/a
n/a
Two or more races
7%
6%
All Ethnic Groups
Participates in the National School Lunch Program (NSLP)
Yes
Eligible for Free Lunch
34%
33%
Eligible for Reduced Lunch (12-13)
7%
5%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), DE Dept. of Education
Profile last updated: 02/09/2025
Frequently Asked Questions
What is Wilbur (Kathleen H.) Elementary School's ranking?
Wilbur (Kathleen H.) Elementary School is ranked #92 out of 199 schools, which ranks it among the top 50% of public schools in Delaware.
What schools are Wilbur (Kathleen H.) Elementary School often compared to?
Wilbur (Kathleen H.) Elementary Schoolis often viewed alongside schools like Southern Elementary School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
30% of students have achieved math proficiency (compared to the 31% DE state average), while 41% of students have achieved reading proficiency (compared to the 42% DE state average).
How many students attend Wilbur (Kathleen H.) Elementary School?
1,063 students attend Wilbur (Kathleen H.) Elementary School.
What is the racial composition of the student body?
45% of Wilbur (Kathleen H.) Elementary School students are Black, 27% of students are White, 17% of students are Hispanic, 7% of students are Two or more races, and 4% of students are Asian.
What is the student-teacher ratio of Wilbur (Kathleen H.) Elementary School?
Wilbur (Kathleen H.) Elementary School has a student ration of 15:1, which is higher than the Delaware state average of 14:1.
What grades does Wilbur (Kathleen H.) Elementary School offer ?
Wilbur (Kathleen H.) Elementary School offers enrollment in grades Kindergarten-5 (No virtual instruction).
What school district is Wilbur (Kathleen H.) Elementary School part of?
Wilbur (Kathleen H.) Elementary School is part of Colonial School District.
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