Mariner Middle School

16391 Harbeson Rd
Milton, DE 19968
(School attendance zone shown in map)
7/
10
Top 50%
Serving 664 students in grades 6-8, Mariner Middle 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 35% (which is higher than the Delaware state average of 29%). The percentage of students achieving proficiency in reading/language arts is 48% (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 43% of the student body (majority Hispanic), which is lower than the Delaware state average of 59% (majority Black).

Quick Stats (2024-25)

  • School Type: Magnet School
  • Grades: 6-8
  • Enrollment: 664 students
  • Student:Teacher Ratio: 14:1
  • Minority Enrollment: 43%
  • : Top 50% in DE
  • : 35% (Top 50%)
  • : 48% (Top 50%)
  • : 29% (Top 30%)
  • Source: National Center for Education Statistics (NCES), DE Dept. of Education

School Overview

Mariner Middle School's student population of 664 students has grown by 7% over five school years.
The teacher population of 47 teachers has grown by 11% over five school years.
School Type
Grades Offered
Grades 6-8
Total Students
664 students
This chart displays total students of Mariner Middle School by year, with the latest 2022-23 school year data.
Gender %
This chart displays gender of Mariner Middle School
Total Classroom Teachers
47 teachers
This chart displays the total teachers of Mariner Middle School by year, with the latest 2022-23 school year data.
Students by Grade
This chart displays the students of Mariner Middle School by grade.

School Rankings

Mariner Middle School ranks within the top 50% of all 201 schools in Delaware (based off of combined math and reading proficiency testing data).
The diversity score of Mariner Middle School is 0.60, 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.
This School
State Level (DE)
#64 out of 201 schools
(Top 50%)
This chart displays the overall school rank of Mariner Middle School, with the latest 2021-22 school year data.
35%
29%
This chart displays the percentage of students that scored at or above 'proficient' levels in Math of Mariner Middle School and the percentage of public school students that scored at or above 'proficient' levels in Math of public schools in Delaware by year, with the latest 2021-22 school year data.
48%
42%
This chart displays the percentage of students that scored at or above 'proficient' levels in Reading/Language Arts of Mariner Middle School and the percentage of public school students that scored at or above 'proficient' levels in Reading/Language Arts of Delaware by year, with the latest 2021-22 school year data.
29%
21%
This chart displays the percentage of students that scored at or above 'proficient' levels in Science of Mariner Middle School and the percentage of public school students that scored at or above 'proficient' levels in Science of public schools in Delaware by year, with the latest 2021-22 school year data.
Student : Teacher Ratio
14:1
14:1
This chart displays the student teacher ratio of Mariner Middle School and the public school average student teacher ratio of Delaware by year, with the latest 2022-23 school year data.
American Indian
n/a
n/a
Asian
1%
4%
This chart displays the percentage of Asian students in Mariner Middle School and the percentage of Asian public school students in Delaware by year, with the latest 2022-23 school year data.
Hispanic
24%
19%
This chart displays the percentage of Hispanic students in Mariner Middle School and the percentage of Hispanic public school students in Delaware by year, with the latest 2022-23 school year data.
Black
13%
31%
This chart displays the percentage of Black students in Mariner Middle School and the percentage of Black public school students in Delaware by year, with the latest 2022-23 school year data.
White
57%
41%
This chart displays the percentage of White students in Mariner Middle School and the percentage of White public school students in Delaware by year, with the latest 2022-23 school year data.
Hawaiian
n/a
n/a
Two or more races
5%
5%
This chart displays the percentage of students of two or more races in Mariner Middle School and the percentage of public school students of two or more races in Delaware by year, with the latest 2022-23 school year data.
All Ethnic Groups
This chart displays the percentage breakdown of students of all ethnic groups in Mariner Middle School.
This chart displays the percentage breakdown of public school students of all ethnic groups in Delaware.
0.60
This chart displays the diversity score of Mariner Middle School and the public school average diversity score of Delaware by year, with the latest 2022-23 school year data.
Participates in the National School Lunch Program (NSLP)
Yes
Eligible for Free Lunch
31%
34%
This chart displays the percentage of students who is eligible for free lunch in Mariner Middle School and the percentage of public school students who is eligible for free lunch in Delaware by year, with the latest 2022-23 school year data.
Eligible for Reduced Lunch (12-13)
5%
5%
This chart displays the percentage of students who is eligible for reduced lunch in Mariner Middle School and the percentage of public school students who is eligible for reduced lunch in Delaware by year, with the latest 2012-13 school year data.
School District Name
Source: National Center for Education Statistics (NCES), DE Dept. of Education

Frequently Asked Questions

What is Mariner Middle School's ranking?
Mariner Middle School is ranked #64 out of 201 schools, which ranks it among the top 50% of public schools in Delaware.
What schools are Mariner Middle School often compared to?
Mariner Middle Schoolis often viewed alongside schools like Beacon Middle School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
35% of students have achieved math proficiency (compared to the 29% DE state average), while 48% of students have achieved reading proficiency (compared to the 42% DE state average).
How many students attend Mariner Middle School?
664 students attend Mariner Middle School.
What is the racial composition of the student body?
57% of Mariner Middle School students are White, 24% of students are Hispanic, 13% of students are Black, 5% of students are Two or more races, and 1% of students are Asian.
What is the student:teacher ratio of Mariner Middle School?
Mariner Middle School has a student ration of 14:1, which is equal to the Delaware state average of 14:1.
What grades does Mariner Middle School offer ?
Mariner Middle School offers enrollment in grades 6-8
What school district is Mariner Middle School part of?
Mariner Middle School is part of Cape Henlopen School District.

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Quick Stats (2024-25)

  • School Type: Magnet School
  • Grades: 6-8
  • Enrollment: 664 students
  • Student:Teacher Ratio: 14:1
  • Minority Enrollment: 43%
  • : Top 50%
  • : 35% (Top 50%)
  • : 48% (Top 50%)
  • : 29% (Top 30%)
  • Source: National Center for Education Statistics (NCES), DE Dept. of Education

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