Mariner Middle School
🇺🇸 Official data · 2025Milton, Delaware 19968 · Cape Henlopen School District
#7 of 40 middle schools in Delaware
#4358 of 15,369 nationally
About Mariner Middle School
Mariner Middle School is a public middle located in Milton, in the Cape Henlopen School District school district of Delaware, United States. It caters for Grades 6–8. In 2025 it enrolled 552 students. Traditional public schools run by a school district; free to attend.
Its Success Index (US) is 65.1 out of 100, placing it in the top 50% of middle schools in United States and 7th of 40 ranked middle schools in Delaware. Its strongest component is students per teacher (81th percentile), and its weakest is math proficiency (51th percentile).
Other published figures: enrollment 552.
There are 3 schools in Milton; Mariner Middle School ranks 1st of 3 scored schools there.
Success Index (US) breakdown
Each component is a percentile against middle schools across United States.
- Math proficiency (30%)43%
- Reading proficiency (30%)60%
- Community advantage (fewer free/reduced-price lunch) (25%)–
- Students per teacher (15%)11.7
The Success Index (US) summarises published data about a school community. It is not a measure of teaching quality. Read the methodology.
Published measures
All figures published for Mariner Middle School by the official sources.
- Enrollment
- 552
- Students enrolled in the latest NCES directory year.
- Students per teacher
- 11.7
- Enrollment divided by FTE teachers; not class size.
- Reading proficiency
- 60%
- Share of tested students proficient or above (all students, all grades).
- Math proficiency
- 43%
- Share of tested students proficient or above (all students, all grades).
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Schools near Mariner Middle School
Closest schools by straight-line distance, with their Success Index (US).
Milton Elementary School
Milton · Public elementary · Grades K–5
582 students · 863 m away
H. O. Brittingham Elementary School
Milton · Public elementary · Grades K–5
506 students · 1.9 km away
Sussex Academy
Georgetown · Charter other · Grades K–12
1,182 students · 8.9 km away
North Georgetown Elementary School
Georgetown · Public elementary · Grades K–5
754 students · 10 km away
Georgetown Elementary School
Georgetown · Public elementary · Grades K–5
825 students · 11 km away
Georgetown Middle School
Georgetown · Public middle · Grades 6–8
861 students · 11 km away
Bryan Allen Stevenson School of Excellence
Georgetown · Charter middle · Grades 6–8
208 students · 12 km away
Cape Henlopen High School
Lewes · Public high · Grades 9–12
1,889 students · 14 km away
Frederick D Thomas Middle School
Lewes · Public middle · Grades 6–8
451 students · 14 km away
Lewes Elementary School
Lewes · Public elementary · Grades K–5
620 students · 14 km away
Similar schools
Public middle schools in Delaware with a comparable Enrollment.
Stanton Middle School
Wilmington · Public middle · Grades 6–8
558 students
Woodbridge Middle School
Bridgeville · Public middle · Grades 6–8
596 students
Middle School of Excellence
Dover · Public middle · Grades 6–8
608 students
Kirk (George V.) Middle School
Newark · Public middle · Grades 6–8
612 students
Clayton Intermediate School
Clayton · Public middle · Grades 5–6
490 students
McCullough (Calvin R. ) Middle School
New Castle · Public middle · Grades 6–8
615 students
Frequently asked questions
Is Mariner Middle School a good school?
Mariner Middle School has a Success Index (US) of 65.1 out of 100 (Top 50% of middle schools in United States) and ranks #7 of 40 in Delaware. The index summarises published data about the school community and, where available, attainment; it does not measure teaching quality, so visit the school and ask about support at your child's level.
Where does Mariner Middle School rank in Delaware?
Mariner Middle School ranks #7 of 40 middle schools in Delaware and #4358 of 15,369 nationally on the Success Index (US) (2025 data).
How many students attend Mariner Middle School?
Mariner Middle School had 552 students in 2025.
Is Mariner Middle School a elementary school or a high school?
Mariner Middle School is classified as a middle covering Grades 6–8. It is a public school.
What other schools are near Mariner Middle School?
There are 10 schools within 15 km of Mariner Middle School; they are listed on this page with their Success Index (US) and distance, and can be compared side by side.