Mariner Middle School

Mariner Middle School

Public Middle School | Grade 6-8
16391 Harbeson Rd,  Milton, DE
Cape Henlopen School District
4.0
682 Students
A-
Niche Grade

School Details

Head of School
Best, Alfred G.
Student Teacher Ratio
14:1
Math Proficiency
35%
Reading Proficiency
48%

Niche Grade

A-
Academics
A-
Teachers
Source: Niche
Niche Grades

Niche grades and rankings are calculated using dozens of public data sets and millions of reviews. Niche data scientists and user researchers rigorously analyze data and user opinions to assess the key aspects of K-12 Schools, Colleges, and Places to Live. Every month, millions of students and families use the Niche grades and report cards to find the right school or neighborhood.

Niche Grade Details

Academics
Reading Proficiency
48%
Math Proficiency
35%
Teachers
Student Teacher Ratio
14:1
Teachers
49
Full Time Teachers
49
Teachers in First or Second Year
7.1%

GreatSchools Rating

Source: GreatSchools
GreatSchools Rating
The GreatSchools Rating helps parents compare schools within a state based on a variety of school quality indicators and provides a helpful picture of how effectively each school serves all of its students. Ratings are on a scale of 1 (below average) to 10 (above average) and can include test scores, college readiness, academic progress, advanced courses, equity, discipline and attendance data. We also advise parents to visit schools, consider other information on school performance and programs, and consider family needs as part of the school selection process.
View GreatSchools Rating Methodology

GreatSchools Rating Details

Test Scores

Math
35.7%
State Average
32.6%
Science
22.8%
State Average
19.9%
GreatSchools Test Scores Rating
GreatSchools
The Test Score Rating reflects annual state test results for this school compared with scores statewide.

Teachers and Staff

Students Per Counselor
624:1

Student Diversity

Male
54.2%
Female
45.8%
White
57.4%
Hispanic
23.6%
Black
12.7%
Two or more races
4.8%
Asian or Pacific Islander
<1%
Native American
<1%

Specialty School Programs

Free/Reduced Lunch Offered

This School’s Reviews

GreatSchools Reviews
4.0 7 Reviews
5.0 parent
9/16/2025
Our son has developed into a young man over the two years he has been attending Mariner Middle School. The teacher and coaches TRULY care for the students on many levels, not just academically. That said, they hold the children accountable to make sure learning is taking place as they should. Our ex...
5.0 student
6/16/2019
This school is very fun and I would love to go back
1.0 parent
2/23/2015
My child has to come home and learn math on You tube. Complete strangers do a better job teaching my child than the math teachers .
5.0 teacher
11/5/2014
The Mariner Middle School has a lot of great opportunities for students to shine. The staff is caring and supportive.

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Mariner Middle School is a public school for students in grades 6-8 in Milton, DE, in the Milton neighborhood, and is served by the Cape Henlopen School District in Delaware. The school has a total enrollment of 682 and maintains a student-teacher ratio of 14:1. Academic records show that 35% of students achieve proficiency in math, and 48% are proficient in reading. Mariner Middle School has received feedback and ratings, with a Niche grade of A- and a GreatSchools Rating of 5 out of 10. The average home value in this area is $502,604. Discover additional schools in the area, like Milton Elementary School, H.O. Brittingham Elementary School, and more. Learn more about what Milton has to offer, and browse homes for sale and for rent near Mariner Middle School.

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