Mariner Middle School
16391 Harbeson Rd, Milton, DE 19968 · (302) 685-8516 · Part of Cape Henlopen School District
Milton’s School Grade A− better than 81% of Delaware school districts
What stands out about Mariner Middle School
- Its own letter, B+: better results than 74% of Delaware’s public schools
- Math proficiency 6 pts above the state
- Reading / language arts 6 pts above the state
- Small classes: 12 students per teacher
- Enrollment down 11.5% since 2020–21
- Next stop for Milton kids: Cape Henlopen High School
On the path
Where Milton kids come from and go next. The whole path →
Test scores
2020–21Its own letter, B+, places these results among Delaware’s 192 public schools with results. Source: EDFacts via Urban Institute Education Data Portal (SY2020-21).
Location
Directions ↗16391 Harbeson Rd, Milton
Students
Down 11.5% since 2020–21.
As reported to NCES, share of students with a reported race or ethnicity.
Parents talk
Questions and answers about Mariner Middle School from Milton families.
Other schools in Cape Henlopen School District
School facts: U.S. Department of Education (NCES), 2024–2025 school year. Test scores: EDFacts via Urban Institute Education Data Portal (SY2020-21). A school’s letter is our own summary of its reading and math results against Delaware’s other public schools; Milton’s School Grade is built from its districts’ results. Map: © OpenStreetMap contributors.