Middle school (grades 6-8) · Milton, DE

Mariner Middle School

Federal NCES profile for Mariner Middle School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 46/100.

2024-25 NCES dataMiddle school (grades 6-8)NCES 100017000033
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Compiled from official source data by .
0/100100/10046/100
👥 S:T ratio
53
🌟 Gifted program
70
🎓 Counselors
45
📋 Attendance
16
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →

The verdict

Mariner Middle School earns 46/100 on the Resource Investment Index, with class sizes smaller than 75% of Delaware schools.

#1 of 3
public schools in Milton · Resource Index
46
Resource Index · Typical
11.7:1
small classes for Delaware
552
students enrolled

Mariner Middle School has class sizes smaller than 75% of Delaware schools. Computed live against every Delaware school reporting to NCES.

By Resource Investment Index, Mariner Middle School ranks #1 of 3 public schools in Milton, DE.

School address

Milton, DE 19968
District: Cape Henlopen School District · Delaware

NCES ID 100017000033 Verify on NCES CCD record →

CCD year-over-year · 2022-23 → 2023-24

+18 students YoY

Mariner Middle School held near 682 students from 2022-23 to 2023-24 (+18 headcount).

Teacher FTE added 47.0 → 49.0 across the same CCD years.

Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).

Steady CCD campus

+18 students YoY 100017000033 · Milton, DE Middle · MID · TRAD

552 enr · 11.7:1 · RII 46

Nearest enrollment peer: Cape Henlopen High School (1,889 students)

Mariner Middle School held near 682 students from 2022-23 to 2023-24 (+18 headcount). Teacher FTE added 47.0 → 49.0 across the same CCD years. Read with this school → · District book → · Delaware schools → · Find another →

Mariner Middle School in the enrollment neighbourhood

Fall enrollment among this campus and nearest district peers

students

What this shows Mariner Middle School reports 552 students on the CCD universe file.

Source U.S. Department of Education, NCES Common Core of Data (Public School Universe) As of 2024-25

How Mariner Middle School compares

Mariner Middle School held steady on CCD headcount: ratios and free-lunch share vs Delaware and U.S. means.

Metric This school vs Delaware Delaware avg U.S. avg
Students per teacher 11.7:1 ▼ 16% 13.9:1 15.7:1
Enrollment 552 top 45% - -

Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25

11.7:1
Leaner classes than 78% of US schools, among the more generously staffed nationally.
552
Bigger than 68% of US schools by enrollment, mid-sized for the country.

Equity indicators methodology

Staffing depth
11.7:1
students per teacher - 16% below state mean
Top 25% in Delaware - lower ratio than 75% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
33.7%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
Funding equity
$20,712
per pupil, district-wide - above Delaware avg of $18,304
Somewhat above the U.S. public-school average, reflecting higher local or state investment per enrolled student.
Support staff
Counselors2.0 FTE
Per 276 students, the combined health-and-guidance staffing load for this school.
Discipline context
33
in-school suspensions + 40 out-of-school
Suspension rate: 6.0 per 100 students. Combined in-school and out-of-school rate: 13.2 per 100 students. Reported via the Civil Rights Data Collection.

Student demographics

White 54.7%
Hispanic or Latino 27.4%
African American 11.1%
Two or More 6.0%
Asian 0.7%
Native Hawaiian / Pacific Islander 0.2%

Largest group: White at 54.7% of enrollment.

Student-body diversity index 61.0/100

Simpson diversity index - at 61.0, Mariner Middle School is about as mixed as the Delaware school average of 61.3.

Programs

Gifted & talented Yes

District finance for Cape Henlopen School District reports $20,712 per pupil (NCES F-33) - open the district page for the full revenue mix.

How Mariner Middle School Compares to District-Mates

School Enrollment Economic Profile Student-Teacher Ratio
Cape Henlopen High School Larger No free-lunch data Higher S:T ratio
Love Creek Elementary School Similar size No free-lunch data No ratio data
Lewes Elementary School Similar size No free-lunch data Higher S:T ratio
Milton Elementary School Similar size No free-lunch data Higher S:T ratio
Rehoboth Elementary School Similar size No free-lunch data Similar S:T ratio

Comparisons are relative to Mariner Middle School's own figures; each column derives from NCES Common Core of Data.

Other Schools in This District

Cape Henlopen School District · 5 sibling schools

View district profile

Nationwide middle schools with similar size or staffing

Out-of-state peers matched by enrollment and by student-teacher ratio, not the same-city or same-district lists above.

Similar enrollment (~552 students)

Similar student-teacher ratio (~11.7:1)

Frequently asked questions about Mariner Middle School

How many students attend Mariner Middle School?

Mariner Middle School has 552 students enrolled. It is a middle school in Milton, DE. CCD year-over-year: 664 (2022-23) → 682 (2023-24), nearly flat (+18).

What is the student-teacher ratio at Mariner Middle School?

The student-teacher ratio at Mariner Middle School is 11.7:1, which is 16% lower than the Delaware average of 13.9:1 and 25% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.

What is the racial and ethnic makeup of Mariner Middle School?

The largest demographic group at Mariner Middle School is White at 54.7% of enrollment, in Milton, DE. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 61.0/100.

What is the Resource Investment Index for Mariner Middle School?

Mariner Middle School has a Resource Investment Index of 46/100 (typical reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, gifted-program reporting, counselor availability, chronic absenteeism. Not a test-score or academic measure (national median ~41/100, see methodology).

How does Mariner Middle School rank among public schools in Milton?

By Resource Investment Index, Mariner Middle School ranks #1 of 3 public schools in Milton, DE. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking.

What other schools are in Cape Henlopen School District?

Besides Mariner Middle School, Cape Henlopen School District also operates Cape Henlopen High School (1,889 students), Love Creek Elementary School (631 students), and Lewes Elementary School (620 students). See the Cape Henlopen School District district page for the complete list.

Read our methodology - how this data is sourced, computed, and verified.

Source: National Center for Education Statistics (NCES) CCD + Public School Universe (2024-25), CRDC (2021-22), F-33 District Finance Survey (FY 2022-23) · 2024-25 Data as of the 2024-25 school year. Coverage from U.S. Department of Education NCES Common Core of Data. Varies by entity type; administrative districts and certain charter networks may report only a subset of fields.

All federal data sources used on this page

Full source list and how we compute each figure: methodology page.

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Compiled from official source data by .