Enrollment
713
Delaware · 2024-25 NCES data
High school (grades 9-12) · Delmar, DE
Delmar High School
Federal NCES profile for Delmar High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 39/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 100027000080
👥 S:T ratio 18
📚 AP courses 30
🌟 Gifted program 70
🎓 Counselors 29
📋 Attendance 46
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Delmar High School earns 39/100 on the Resource Investment Index, with class sizes larger than 98% of Delaware schools.
- 39
- Resource Index · Typical
- 20.4:1
- large classes for Delaware
- 713
- students enrolled
Delmar High School has class sizes larger than 98% of Delaware schools. Computed live against every Delaware school reporting to NCES.
School address
District: Delmar School District · Delaware
NCES ID 100027000080 Verify on NCES CCD record →
Teachers (FTE)
35.0
Federal CCD staff survey
Students per teacher
20.4:1
vs 13.9:1 Delaware avg
+47% vs state
Student-teacher ratio in context
How Delmar High School compares with Delaware and U.S. medians
What stands out at Delmar High School
Delmar High School is a mid-sized high school in Delmar, Delaware, enrolling 713 students.
Class loads run heavy: 20.4:1 is larger than about 98% of Delaware schools and 47% above the 13.9:1 state mean, so each teacher carries more students than is typical.
Enrollment of 713 puts it in the larger third of Delaware schools by headcount.
Its Resource Investment Index sits near the middle of the pack among 222 scored Delaware schools.
Its student body is led by White (58%) and African American (16%) (diversity index 61/100).
On the academic-pipeline side it reports 6 Advanced Placement courses.
Counselor availability sits well past the ASCA benchmark, roughly 357 students sharing each counselor, though short of the most stretched campuses.
Attendance runs somewhat below the norm, with 21.6% of students chronically absent per the 2021-22 civil-rights collection.
The surrounding Delmar School District spends $11,013 per pupil, 35% below the Delaware average, a leaner-resourced district than most.
Its district, Delmar School District, also runs Delmar Middle School (732 students).
Sourced from NCES CCD, CRDC, and F-33 (federal records, not a quality verdict). How we source and compute this.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Delmar High School compares
Delmar High School on the metrics families compare, against Delaware and U.S. means.
| Metric | This school | vs Delaware | Delaware avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 20.4:1 | ▲ 47% | 13.9:1 | 15.7:1 |
| Enrollment | 713 | top 30% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
20.4:1
Leaner classes than 15% of US schools, heavier class loads than most.
713
Bigger than 81% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Staffing depth
20.4:1
students per teacher
- 47% above state mean
Top 98% in Delaware - lower ratio than 2% of state schools
Above 20:1, running heavier than the typical U.S. public school; staffing is comparatively stretched.
Engagement
21.6%
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
$11,013
per pupil, district-wide
- below Delaware avg of $16,990
Well below the U.S. average per-pupil spend, a notably leaner funding position that may affect programs, facilities, and staffing.
Support staff
Counselors2.0 FTE
Per 357 students, the combined health-and-guidance staffing load for this school.
Discipline context
40
in-school suspensions + 53 out-of-school
Suspension rate: 5.6 per 100 students. Combined in-school and out-of-school rate: 13.0 per 100 students. Reported via the Civil Rights Data Collection.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
Three separate federal collections, each on its own reporting cadence - which is why this school's numbers line up on a consistent basis against every other school and state on this site, rather than mixing figures pulled from different survey years.
Student demographics
White 58.2%
African American 15.7%
Hispanic or Latino 15.4%
Two or More 6.3%
Asian 3.8%
American Indian / Alaska Native 0.4%
Native Hawaiian / Pacific Islander 0.1%
Largest group: White at 58.2% of enrollment.
Student-body diversity index 60.7/100
Simpson diversity index - at 60.7, Delmar High School is about as mixed as the Delaware school average of 61.3.
Programs
AP courses offered 6
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Delmar School District, which includes Delmar High School.
$11,013
Per student
-35%
vs Delaware
Avg $16,990
-34%
vs U.S.
Avg $16,593
Revenue mix
Local 18.9%
State 68.3%
Federal 12.8%
Source: NCES F-33 School District Finance Survey District-level finance · FY 2021-22 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
How Delmar High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Delmar Middle School | Similar size | No free-lunch data | Similar S:T ratio |
Comparisons are relative to Delmar High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 732
- Students per teacher
- 21.5:1
- Resource Index
- 28/100
Similar high schools statewide
Matched by enrollment size and by staffing ratio across all of Delaware, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~713 students)
Similar student-teacher ratio (~20.4:1)
Next steps
Verify locally before acting on Delmar High School's federal record.
- Compare Delmar High School against another school. Compare schools
- Delmar School District's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
Federal record (CCD 2024-25, CRDC 2021-22) - PlainSchools assigns no subjective rating; the composite quality score is a transparent, reproducible index computed from this cited federal data.
Frequently asked questions about Delmar High School
How many students attend Delmar High School?
Delmar High School has 713 students enrolled. It is a high school in Delmar, DE.
What is the student-teacher ratio at Delmar High School?
The student-teacher ratio at Delmar High School is 20.4:1, which is 47% higher than the Delaware average of 13.9:1 and 30% higher than the national average of 15.7:1.
What is the racial and ethnic makeup of Delmar High School?
The largest demographic group at Delmar High School is White at 58.2% of enrollment, in Delmar, DE. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 60.7/100.
What is the Resource Investment Index for Delmar High School?
Delmar High School has a Resource Investment Index of 39/100 (typical reported resources relative to schools nationally) based on 5 factors: student-teacher ratio, AP course offerings, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
Is Delmar High School a good school?
Delmar High School earns 39/100 on the Resource Investment Index, with class sizes larger than 98% of Delaware schools. This is a resource snapshot, not an academic rating; see the Resource Investment Index question above for what the number does and doesn't measure.
What other schools are in Delmar School District?
Besides Delmar High School, Delmar School District also operates Delmar Middle School (732 students). See the Delmar School District district page for the complete list.
Related tools
Every figure on PlainSchools is rendered directly from the source NCES, CRDC and F-33 federal records, no number is typed in by an editor. Each school's figures reflect its most recent NCES/CRDC submission on file. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.