Enrollment
960
Delaware · 2024-25 NCES data
High school (grades 9-12) · Seaford, DE
Seaford Senior High School
Federal NCES profile for Seaford Senior High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 19/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 100153000158
👥 S:T ratio 23
📚 AP courses 40
🌟 Gifted program 30
🎓 Counselors 4
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Seaford Senior High School earns 19/100 on the Resource Investment Index, with class sizes larger than 94% of Delaware schools.
- #6 of 6
- public schools in Seaford · Resource Index
- 19
- Resource Index · Lower
- 19.2:1
- large classes for Delaware
- 960
- students enrolled
Seaford Senior High School has class sizes larger than 94% of Delaware schools. Computed live against every Delaware school reporting to NCES.
By Resource Investment Index, Seaford Senior High School ranks #6 of 6 public schools in Seaford, DE.
School address
District: Seaford School District · Delaware
NCES ID 100153000158 Verify on NCES CCD record →
Teachers (FTE)
50.0
Federal CCD staff survey
Students per teacher
19.2:1
vs 13.9:1 Delaware avg
+38% vs state
Student-teacher ratio in context
How Seaford Senior High School compares with Delaware and U.S. medians
What stands out at Seaford Senior High School
Seaford Senior High School is a large high school in Seaford, Delaware, enrolling 960 students.
Class loads run heavy: 19.2:1 is larger than about 94% of Delaware schools and 38% above the 13.9:1 state mean, so each teacher carries more students than is typical.
Enrollment of 960 puts it in the larger third of Delaware schools by headcount.
Its Resource Investment Index trails 100% of the 222 Delaware schools with a score on record, one of the lower results on this measure.
Its student body is led by African American (39%) and Hispanic or Latino (30%) (diversity index 70/100).
On the academic-pipeline side it reports 8 Advanced Placement courses.
Counselor access is stretched at roughly 480 students per counselor, well above the ASCA-recommended 250:1 ceiling.
Chronic absenteeism is elevated: 53.8% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Its district draws 20.9% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
Discipline events run high: 204 in- and out-of-school suspensions were reported for 960 students in the 2021-22 Civil Rights Data Collection.
The federal civil-rights collection also records 1 expulsion at this campus for 2021-22.
Seaford School District also operates Seaford Middle School (800 students) and Seaford Central Elementary School (473 students) alongside Seaford Senior High School.
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 Seaford Senior High School compares
Seaford Senior 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 | 19.2:1 | ▲ 38% | 13.9:1 | 15.7:1 |
| Enrollment | 960 | top 14% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
19.2:1
Leaner classes than 19% of US schools, heavier class loads than most.
960
Bigger than 90% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Staffing depth
19.2:1
students per teacher
- 38% above state mean
Top 94% in Delaware - lower ratio than 6% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
53.8%
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
$17,673
per pupil, district-wide
- above Delaware avg of $16,990
Somewhat above the U.S. public-school average, reflecting higher local or state investment per enrolled student.
Support staff
Counselors2.0 FTE
Per 480 students, the combined health-and-guidance staffing load for this school.
Discipline context
80
in-school suspensions + 124 out-of-school
Suspension rate: 8.3 per 100 students. Combined in-school and out-of-school rate: 21.3 per 100 students. Reported via the Civil Rights Data Collection. Includes 1 expulsion.
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
African American 39.3%
Hispanic or Latino 29.7%
White 23.9%
Two or More 6.4%
Asian 0.6%
American Indian / Alaska Native 0.2%
Largest group: African American at 39.3% of enrollment.
Student-body diversity index 69.6/100
Simpson diversity index - at 69.6, Seaford Senior High School is more mixed than the Delaware school average of 61.3.
Programs
AP courses offered 8
Funding & spending
District-wide per-pupil expenditure for Seaford School District, which includes Seaford Senior High School.
$17,673
Per student
+4%
vs Delaware
Avg $16,990
+7%
vs U.S.
Avg $16,593
Revenue mix
Local 15.9%
State 63.1%
Federal 20.9%
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 Seaford Senior High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Seaford Middle School | Similar size | No free-lunch data | Lower S:T ratio |
| Seaford Central Elementary School | Smaller | No free-lunch data | Lower S:T ratio |
| Frederick Douglass Elementary School | Smaller | No free-lunch data | Lower S:T ratio |
| West Seaford Elementary School | Smaller | No free-lunch data | Lower S:T ratio |
| Blades Elementary School | Smaller | No free-lunch data | Lower S:T ratio |
Comparisons are relative to Seaford Senior High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 800
- Students per teacher
- 13.3:1
- Resource Index
- 26/100
- Enrollment
- 473
- Students per teacher
- 15.3:1
- Resource Index
- 58/100
- Enrollment
- 456
- Students per teacher
- 14.3:1
- Resource Index
- 46/100
- Enrollment
- 424
- Students per teacher
- 15.7:1
- Resource Index
- 39/100
- Enrollment
- 410
- Students per teacher
- 15.8:1
- Resource Index
- 31/100
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 (~960 students)
Similar student-teacher ratio (~19.2:1)
Next steps
Verify locally before acting on Seaford Senior High School's federal record.
- Compare Seaford Senior High School against another school. Compare schools
- Seaford 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 Seaford Senior High School
How many students attend Seaford Senior High School?
Seaford Senior High School has 960 students enrolled. It is a high school in Seaford, DE.
What is the student-teacher ratio at Seaford Senior High School?
The student-teacher ratio at Seaford Senior High School is 19.2:1, which is 38% higher than the Delaware average of 13.9:1 and 22% higher than the national average of 15.7:1.
What is the racial and ethnic makeup of Seaford Senior High School?
The largest demographic group at Seaford Senior High School is African American at 39.3% of enrollment, in Seaford, DE. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 69.6/100.
What is the Resource Investment Index for Seaford Senior High School?
Seaford Senior High School has a Resource Investment Index of 19/100 (lower 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).
How does Seaford Senior High School rank among public schools in Seaford?
By Resource Investment Index, Seaford Senior High School ranks #6 of 6 public schools in Seaford, DE. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Seaford on the city page.
Is Seaford Senior High School a good school?
Seaford Senior High School earns 19/100 on the Resource Investment Index, with class sizes larger than 94% 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 Seaford School District?
Besides Seaford Senior High School, Seaford School District also operates Seaford Middle School (800 students), Seaford Central Elementary School (473 students), and Frederick Douglass Elementary School (456 students). See the Seaford 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.