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SCHOOL COMMUNITY·INDIAN RIVER SCHOOL DISTRICT·NCES 100068000303

Millsboro Middle School

302 East State Street, Millsboro, DE 19966 · (302) 934-3200 · Sussex County
GRADES 06–08MIDDLE32-TOWNREGULAR SCHOOL726 STUDENTS
Enrollment
726
Middle
DISTRICT 786 · STATE 655
Student : Teacher
13.7:1
53 FTE teachers
DISTRICT 14.3:1 · STATE 16.4:1
Free / Reduced Lunch
,
Title I proxy
Community
5
0 members
Enrollment and student:teacher ratio compared against other middle schools. Free/Reduced Lunch and demographics compared against all schools.

Enrollment by grade, 2024-25

GradeStudentsShare
Grade 622130%
Grade 725034%
Grade 825535%
Student demographics
67%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 64% · STATE 71% · US 70%
White
33947%
DISTRICT 44% · STATE 38% · US 43%
Hispanic
20829%
DISTRICT 38% · STATE 20% · US 30%
Black
11215%
DISTRICT 11% · STATE 31% · US 15%
Asian
71%
DISTRICT 1% · STATE 4% · US 6%
Two+
608%
DISTRICT 5% · STATE 6% · US 5%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Male
40456%
Female
32244%

Discussions

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Test scores

DeSSA + SBAC 2024-25 . % Proficient
English Language Arts
33.8%
DE avg 41.4% . -5.5pp since 2023
Math
26.3%
DE avg 34.0% . +1.5pp since 2023

What this means: On the DeSSA + SBAC, Delaware's statewide test, about 34 of every 100 students at this school read and write at grade level and about 26 of 100 do math at grade level. Across all Delaware schools, those numbers are about 41 and 34. Reading and writing scores are down about 6 points since 2023, while math scores are up about 2 points.

DeSSA + SBAC results by year

School yearEnglish Language ArtsMath
2024-2533.8%26.3%
2023-2439.3%24.8%
% Proficient, all students and all tested grades.
Source: DeSSA + SBAC. All students, all grades. See all years and grades →

Where Millsboro Middle School ranks

Among middle schools
MeasureThis schoolIn DelawareIn Sussex County
Math proficiency
ranked highest first
26.3%#18 of 38#7 of 10
Reading proficiency
ranked highest first
33.8%#24 of 38#9 of 10
Enrollment
ranked largest first
726#18 of 40#5 of 11
Students per teacher
ranked fewest first
13.7:1#11 of 39#3 of 11
Diversity index
ranked most diverse first
66.9%#14 of 39#3 of 11
Enrollment change since 2017-18
ranked steepest decline first
-0.3%#23 of 23N/A
Ranked against other public middle schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list.

4-year change

SY 2020-21 vs SY 2024-25
Enrollment
726
-71 (-9%) vs 2020
+29% since 2010-11, when it was 562
Student : Teacher
13.7:1
was 13.5:1
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree and reduced lunch
2024-257265313.7:1N/A
2023-247565314.3:1N/A
2022-237715314.6:1N/A
2020-217975913.5:1N/A
2017-187284416.6:1N/A
2015-166804415.4:142% (285)
2010-115624313.1:170% (395)
Source: NCES Common Core of Data. Rows are the federal collections on file for Millsboro Middle School.

About Millsboro Middle School

As a mid-sized middle school, Millsboro Middle School serves students in Millsboro, Delaware. Enrollment totals 726 students across grades 6 through 8.

Millsboro Middle School is one school in Indian River School District, a system of 15 schools with 10,753 students.

At Millsboro Middle School, White students make up the biggest share, 47%. Enrollment also includes 29% Hispanic, 15% Black, and 8% multiracial. Among people living in Sussex County, the White share is about 74%. On a 0 to 100 scale, the school's diversity index is 67, compared with 70 nationally.

There are 53 full-time-equivalent teachers at the school, a ratio of 13.7:1. The gap from the 16.4:1 average for middle schools in Delaware is 2.7 students per teacher.

In Sussex County, home to about 255,626 people, median household income comes to about $81,497, 33% of adults hold a bachelor's degree or higher, and about 8% of people live in poverty. There are 55 public schools in the county, enrolling about 32,366, Millsboro Middle School among them.

East Millsboro Elementary School, about 0.6 miles away, is the closest public school. Within five miles of Millsboro Middle School, there are 5 other public schools.

The federal government classifies Millsboro Middle School's location as Town: Distant.

Enrollment fell by 9% across 4 years, from 797 in 2020-21 to 726 in 2024-25.

This page is set up for the Millsboro Middle School community to discuss homework, tutoring, and testing dates. Members of the school community can share what they know.

Sussex County at a glance

View full county profile
Population
255,626
Census ACS
Median income
$81,497
Household, ACS
Bachelor's+
33%
Adults 25+
Poverty rate
8%
Below federal line
Schools in county
55
32,366 students

Quick facts

School name
Millsboro Middle School
District
Indian River School District
Address
302 East State Street, Millsboro, DE 19966
Phone
(302) 934-3200
County
Sussex County
Level
Middle
Grade range
06–08
Total enrollment
726
Teachers (FTE)
53
Student–teacher ratio
13.7:1
Locale
32-Town: Distant
NCES ID
100068000303
Charter school
No
Virtual school
No

Related schools

Other schools in Indian River School District
Other schools in Millsboro
Nearby schools

Frequently asked questions

About Millsboro Middle School
What is the total enrollment at Millsboro Middle School?
Millsboro Middle School enrolls approximately 726 students in grades 06-08.
What grades does Millsboro Middle School serve?
Millsboro Middle School serves grades 06-08.
What is the student-teacher ratio at Millsboro Middle School?
The student-to-teacher ratio at Millsboro Middle School is approximately 13.7:1 (53 FTE teachers).
How diverse is Millsboro Middle School?
Millsboro Middle School reports a student body of 47% White, 29% Hispanic, 15% Black, 1% Asian, 8% Two or more.
Who oversees Millsboro Middle School?
Millsboro Middle School is overseen by Indian River School District in Sussex County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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