Enrollment
1,051
South Carolina · 2024-25 NCES data
High school (grades 9-12) · Seneca, SC
Seneca High
Federal NCES profile for Seneca High, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 45/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 450306000841
👥 S:T ratio 25
📚 AP courses 75
🌟 Gifted program 70
🎓 Counselors 30
📋 Attendance 28
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Seneca High earns 45/100 on the Resource Investment Index, with class sizes larger than 93% of South Carolina schools.
- #6 of 6
- public schools in Seneca · Resource Index
- 45
- Resource Index · Typical
- 18.8:1
- large classes for South Carolina
- 61.1%
- free-lunch eligible
Seneca High has class sizes larger than 93% of South Carolina schools. Computed live against every South Carolina school reporting to NCES.
By Resource Investment Index, Seneca High ranks #6 of 6 public schools in Seneca, SC.
School address
District: Oconee 01 · South Carolina
NCES ID 450306000841 Verify on NCES CCD record →
Teachers (FTE)
56.0
Federal CCD staff survey
Students per teacher
18.8:1
vs 14.3:1 South Carolina avg
+31% vs state
Free-lunch eligible
61.1%
vs 74.0% South Carolina avg
-17% vs state
Student-teacher ratio in context
How Seneca High compares with South Carolina and U.S. medians
What stands out at Seneca High
Seneca High is a higher-need, large high school in Seneca, South Carolina, enrolling 1,051 students.
Class loads run heavy: 18.8:1 is larger than about 93% of South Carolina schools and 31% above the 14.3:1 state mean, so each teacher carries more students than is typical.
Economic need runs somewhat below the state's typical profile, with 61.1% of students eligible for free meals.
Enrollment of 1,051 puts it in the larger third of South Carolina schools by headcount.
Its Resource Investment Index lands in the lower third of 1,214 scored South Carolina schools.
Among 142 similarly sized, similarly resourced-need South Carolina schools statewide, it ranks #106, in the lower tier once campus size and economic need are matched.
Its student body is led by White (58%) and African American (20%) (diversity index 60/100).
On the academic-pipeline side it reports 15 Advanced Placement courses.
Counselor availability sits well past the ASCA benchmark, roughly 350 students sharing each counselor, though short of the most stretched campuses.
Chronic absenteeism is elevated: 29.0% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Its district draws 18.4% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
Discipline events run high: 317 in- and out-of-school suspensions were reported for 1,051 students in the 2021-22 Civil Rights Data Collection.
The federal civil-rights collection also records 2 expulsions at this campus for 2021-22.
Oconee 01 also operates Walhalla High (1,118 students) and Walhalla Middle (857 students) alongside Seneca High.
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 Seneca High compares
Seneca High on the metrics families compare, against South Carolina and U.S. means.
| Metric | This school | vs South Carolina | South Carolina avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 18.8:1 | ▲ 31% | 14.3:1 | 15.7:1 |
| Free-lunch eligible | 61.1% | ▼ 17% | 74.0% | 51.7% |
| Enrollment | 1,051 | top 12% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
18.8:1
Leaner classes than 21% of US schools, heavier class loads than most.
1,051
Bigger than 92% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Economic need
61.1%
free-lunch eligible
- 17% below the South Carolina average of 74.0%
Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.
Staffing depth
18.8:1
students per teacher
- 31% above state mean
Top 93% in South Carolina - lower ratio than 7% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
29.0%
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
$13,875
per pupil, district-wide
- below South Carolina avg of $14,558
Somewhat below the U.S. average per-pupil spend; funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors3.0 FTE
Per 350 students, the combined health-and-guidance staffing load for this school.
Discipline context
164
in-school suspensions + 153 out-of-school
Suspension rate: 15.6 per 100 students. Combined in-school and out-of-school rate: 30.2 per 100 students. Reported via the Civil Rights Data Collection. Includes 2 expulsions.
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 58.3%
African American 20.2%
Hispanic or Latino 12.5%
Two or More 7.7%
Asian 0.8%
American Indian / Alaska Native 0.6%
Largest group: White at 58.3% of enrollment.
Student-body diversity index 59.8/100
Simpson diversity index - at 59.8, Seneca High is more mixed than the South Carolina school average of 52.7.
Programs
AP courses offered 15
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Oconee 01, which includes Seneca High.
$13,875
Per student
-5%
vs South Carolina
Avg $14,558
-16%
vs U.S.
Avg $16,593
Revenue mix
Local 42.4%
State 39.2%
Federal 18.4%
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 Seneca High Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Walhalla High | Similar size | Similar economic need | Similar S:T ratio |
| Walhalla Middle | Similar size | Similar economic need | Lower S:T ratio |
| Seneca Middle | Similar size | Similar economic need | Lower S:T ratio |
| West-Oak High | Smaller | Similar economic need | Lower S:T ratio |
| West Oak Middle | Smaller | Higher economic need | Lower S:T ratio |
Comparisons are relative to Seneca High's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,118
- Students per teacher
- 17.7:1
- Resource Index
- 36/100
- Enrollment
- 857
- Students per teacher
- 13.8:1
- Resource Index
- 43/100
- Enrollment
- 829
- Students per teacher
- 14.8:1
- Resource Index
- 40/100
- Enrollment
- 735
- Students per teacher
- 14.4:1
- Resource Index
- 42/100
- Enrollment
- 656
- Students per teacher
- 12.4:1
- Resource Index
- 40/100
Similar high schools statewide
Matched by enrollment size and by staffing ratio across all of South Carolina, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~1,051 students)
Similar student-teacher ratio (~18.8:1)
Next steps
Verify locally before acting on Seneca High's federal record.
- Compare Seneca High against another school. Compare schools
- Oconee 01'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 Seneca High
How many students attend Seneca High?
Seneca High has 1,051 students enrolled. It is a high school in Seneca, SC.
What is the student-teacher ratio at Seneca High?
The student-teacher ratio at Seneca High is 18.8:1, which is 31% higher than the South Carolina average of 14.3:1 and 20% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Seneca High?
61.1% of students at Seneca High are eligible for free lunch, compared to the South Carolina average of 74.0%.
What is the racial and ethnic makeup of Seneca High?
The largest demographic group at Seneca High is White at 58.3% of enrollment, in Seneca, SC. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 59.8/100.
What is the Resource Investment Index for Seneca High?
Seneca High has a Resource Investment Index of 45/100 (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).
How does Seneca High rank among public schools in Seneca?
By Resource Investment Index, Seneca High ranks #6 of 6 public schools in Seneca, SC. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Seneca on the city page.
Is Seneca High a good school?
Seneca High earns 45/100 on the Resource Investment Index, with class sizes larger than 93% of South Carolina 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 Oconee 01?
Besides Seneca High, Oconee 01 also operates Walhalla High (1,118 students), Walhalla Middle (857 students), and Seneca Middle (829 students). See the Oconee 01 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.