Very Good
#76 of 219 schools in DE
Top 34% in state
Mariner Middle School
Middle School · Cape Henlopen School District
16391 Harbeson Rd, Milton, DE 19968
Enrollment
682
Student-Teacher
13.9:1
Score
7.0
Grades
6th – 8th
Enrollment
682
Student-Teacher
13.9:1
Score
7.0
Grades
6th – 8th
Data vintage
2022-23
Data vintage2022-23
How this school compares
Delaware schools
#76 of 219
In Milton
#3 of 3
public schools
In district
#8 of 9
Cape Henlopen School District
Equity
7.6 / 10
Very Good
Shortlisting around Mariner Middle School?
Use this profile as one decision point, then compare nearby options, source confidence, and commute fit before picking a neighborhood around it.
Shortlist starter
Start with these real page-level signals, then use the full table and map below.
Mariner Middle School
Middle School in Milton · grades 6th – 8th. Start here, then compare fit against nearby and district options.
Milton Elementary School
0.5 mi away. Use as a geographic alternative in the same move search.
H. O. Brittingham Elementary School
1.2 mi away. Use as a geographic alternative in the same move search.
About Mariner Middle School
Mariner Middle School is a public middle school in Milton, DE, part of Cape Henlopen School District. Mariner Middle School serves approximately 682 students, and covers grades 6th-8th, and has a 13.9:1 student-teacher ratio. Mariner Middle School has a current MySchoolScout rating of 7.0 out of 10 and ranks #76 of 219 schools in DE.
Structured state assessment records for Mariner Middle School show 43% math proficiency (multi-year average, 2009-2025) and 55% reading/ELA proficiency (multi-year average, 2009-2025).
- This school 7.0 · Very Good
- District avg 7.7
- DE avg 5.8
What Parents Should Know
Mariner Middle School sits in a rural area, which can mean longer drives for some families. Rural schools are often community anchors with smaller classes, but check transportation, after-school options, and access to specialized services before you commit.
Score Breakdown
Full Profile · 3/3 metricsView breakdown
View breakdown
View breakdown
Mariner Middle School — Students at Mariner Middle School score 41% proficient, which is above what's typical for similar communities (expected: 39%).
Test Scores DE DESSA (2024-25)
Based on 90 test records from DE state assessments. About our data
Proficiency Trend
↓ DecliningAverage proficiency (% at or above grade level) across Math & ELA over time.
* COVID-affected year — test participation was uneven nationwide. This data is weighted at 50% in the Growth score calculation.
Source: EdFacts (NCES) and state assessment data. Growth score: 7.1/10.
How Mariner Middle School Compares
See how Mariner Middle School performs across key quality dimensions compared to state benchmarks.
Funding & Resources
Programs & Offerings
Data as of 2021-22 · Source: CRDC via Urban Institute · Learn more
Location
16391 Harbeson Rd, Milton, DE 19968
Nearby Alternatives
Families considering Mariner Middle School may also want to explore other middle schools in the area. Beacon Middle School (rated 8.4/10, 9.5 miles away, in nearby Lewes), which scores notably higher. Another option is Georgetown Middle School (rated 6.8/10, 6.9 miles away, in nearby Georgetown), with a very similar rating. Additionally, Millsboro Middle School (rated 5.5/10, 12.1 miles away, in nearby Millsboro), a more accessible option. For more schools in Milton, see our Milton schools guide .
Nearby Schools
20 within 10.9 mi| School | Distance | Rating |
|---|---|---|
| Milton Elementary School Milton | 0.5 mi | 8.2 |
| H. O. Brittingham Elementary School Milton | 1.2 mi | 9.0 |
| DELMARVA CHRISTIAN SCHOOLS MILTON CAMPUS Milton | 3.3 mi | 6.8 |
| Sussex Consortium Lewes | 4.5 mi | 6.2 |
| Sussex Academy Georgetown | 5.5 mi | 6.5 |
| North Georgetown Elementary School Georgetown | 6.2 mi | 6.3 |
| Georgetown Elementary School Georgetown | 6.9 mi | 6.7 |
| Georgetown Middle School Georgetown | 6.9 mi | 6.8 |
| DELMARVA CHRISTIAN HIGH SCHOOL Georgetown | 7.3 mi | 6.3 |
| Ennis (Howard T.) School Georgetown | 9.2 mi | 4.0 |
| Sussex Central High School Georgetown | 9.3 mi | 4.8 |
| Morris (Evelyn I.) Early Childhood Lincoln | 9.2 mi | 6.2 |
| Cape Henlopen High School Lewes | 8.8 mi | 7.4 |
| Lewes Elementary School Lewes | 8.9 mi | 7.5 |
| Love Creek Elementary School Lewes | 9.2 mi | 8.4 |
| Beacon Middle School Lewes | 9.5 mi | 8.4 |
| Mispillion Elementary Milford | 11.2 mi | 3.5 |
| Millsboro Middle School Millsboro | 12.1 mi | 5.5 |
| Ross (Lulu M.) Elementary School Milford | 11.3 mi | 7.2 |
| Sussex Technical High School Georgetown | 10.9 mi | 6.6 |
Neighborhood Census ACS (2019-2023)
Census data for ZIP 19968 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$81,646
Median Home Value
$418,600
Median Rent
$1,408/mo
Population
14,791
College Educated
40.5%
Homeownership
90.3%
Avg Commute
25.4 min
Poverty Rate
8.4%
Median Age
54
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| Laurel Middle School Laurel, DE | 6.9 |
| Woodbridge Middle School Bridgeville, DE | 6.9 |
| Georgetown Middle School Georgetown, DE | 6.8 |
| duPont (Pierre S.) Middle School Wilmington, DE | 7.2 |
| Kirk (George V.) Middle School Newark, DE | 6.7 |
| Meredith (Everett) Middle School Middletown, DE | 6.7 |
Frequently Asked Questions
Common questions about Mariner Middle School
What grades does Mariner Middle School serve?
Mariner Middle School serves students in grades 6th through 8th.
How many students attend Mariner Middle School?
Mariner Middle School has an enrollment of approximately 682 students.
What is the student-teacher ratio at Mariner Middle School?
The student-teacher ratio at Mariner Middle School is 13.9:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does Mariner Middle School rank in DE?
Mariner Middle School ranks #76 of 219 schools in DE.
What is Mariner Middle School's MySchoolScout rating?
Mariner Middle School has a current MySchoolScout rating of 7.0 out of 10. This score combines the level-appropriate components shown in the rating breakdown; equity data is shown separately for context.
What are the test scores at Mariner Middle School?
Based on loaded state assessment records, Mariner Middle School has 43% math proficiency (multi-year average, 2009-2025) and 55% reading/ELA proficiency (multi-year average, 2009-2025).
Is Mariner Middle School a charter school?
No, Mariner Middle School is not a charter school. It is a traditional public school operated by the local school district.
Is Mariner Middle School a Title I school?
No, Mariner Middle School is not currently a Title I school.
Explore More Schools
Neighborhood Context
Powered by 
Quick Facts NCES CCD (SY 2022-23)
- Grades
- 6th – 8th
- Enrollment
- 682
- Student-Teacher Ratio
- 13.9:1
- Teachers (FTE)
- 49
- Type
- regular
- Setting
- Fringe Rural
- County
- Sussex County
- Chronic Absenteeism (SY 2022-23)
- 28.3%
- Phone
- (302) 685-8516
Resources & Links
District
Cape Henlopen School District- District Enrollment
- 6,587
- Schools in District
- 9
- Per-Pupil Spending
- $20,712
- District Rank
- #8 of 9
How we rate schools
A clear 1–10 score built from public data — growth, academics, and learning environment. No hidden criteria, no pay-to-play.
See how we rateGet school insights in your inbox
New rankings, best-schools lists, and parent guides — delivered free. No spam, unsubscribe anytime.
We respect your privacy. Unsubscribe at any time.