Serving 756 students in grades 6-8, Millsboro Middle School ranks in the bottom 50% of all schools in Delaware for overall test scores (math proficiency is bottom 50%, and reading proficiency is bottom 50%).
The percentage of students achieving proficiency in math is 19% (which is lower than the Delaware state average of 31%). The percentage of students achieving proficiency in reading/language arts is 44% (which is higher than the Delaware state average of 42%).
The student-teacher ratio of 14:1 is equal to the Delaware state level of 14:1.
Minority enrollment is 51% of the student body (majority Hispanic), which is lower than the Delaware state average of 61% (majority Black).
Quick Facts (2025-26)
- Grades: 6-8
- Enrollment: 756 students
- Student-Teacher Ratio: 14:1
- Minority Enrollment: 51%
- Overall Testing Rank: Bottom 50% in DE
- Math Proficiency: 19% (Btm 50%)
- Reading Proficiency: 44% (Top 50%)
- Science Proficiency: 13% (Btm 50%)
- Source: National Center for Education Statistics (NCES), DE Dept. of Education
School Overview
Millsboro Middle School's student population of 756 students has stayed relatively flat over five school years.
The teacher population of 53 teachers has stayed relatively flat over five school years.
Grades Offered
Grades 6-8
(No virtual instruction)
(No virtual instruction)
Total Students
756 students
Gender %
Total Classroom Teachers
53 teachers
Year Founded
1955
School Calendar
Last Day of School
Tue. May 26, 2026
School Rankings
Millsboro Middle School ranks within the bottom 50% of all 199 schools in Delaware (based off of combined math and reading proficiency testing data).
The diversity score of Millsboro Middle School is 0.67, 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
#115 out of 199 schools
(Bottom 50%)
(Bottom 50%)
Math Test Scores (% Proficient)
19%
31%
Reading/Language Arts Test Scores (% Proficient)
44%
42%
Science Test Scores (% Proficient)
13%
21%
Student-Teacher Ratio
14:1
14:1
American Indian
1%
n/a
Asian
1%
4%
Hispanic
26%
20%
Black
16%
31%
White
49%
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
38%
33%
Eligible for Reduced Lunch (12-13)
9%
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 Millsboro Middle School's ranking?
Millsboro Middle School is ranked #115 out of 199 schools, which ranks it among the bottom 50% of public schools in Delaware.
What schools are Millsboro Middle School often compared to?
Millsboro Middle Schoolis often viewed alongside schools like Selbyville Middle School, Georgetown Middle School, Laurel Middle School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
19% of students have achieved math proficiency (compared to the 31% DE state average), while 44% of students have achieved reading proficiency (compared to the 42% DE state average).
How many students attend Millsboro Middle School?
756 students attend Millsboro Middle School.
What is the racial composition of the student body?
49% of Millsboro Middle School students are White, 26% of students are Hispanic, 16% of students are Black, 7% of students are Two or more races, 1% of students are American Indian, and 1% of students are Asian.
What is the student-teacher ratio of Millsboro Middle School?
Millsboro Middle School has a student ration of 14:1, which is equal to the Delaware state average of 14:1.
What grades does Millsboro Middle School offer ?
Millsboro Middle School offers enrollment in grades 6-8 (No virtual instruction).
What school district is Millsboro Middle School part of?
Millsboro Middle School is part of Indian River School District.
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