Enrollment
981
Oklahoma · 2024-25 NCES data
High school (grades 9-12) · Duncan, OK
Federal NCES profile for Duncan Hs, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 45/100.
The verdict
Duncan Hs earns 45/100 on the Resource Investment Index, with class sizes larger than 82% of Oklahoma schools. It is also one of the largest schools in Oklahoma.
Duncan Hs has class sizes larger than 82% of Oklahoma schools. Computed live against every Oklahoma school reporting to NCES.
By Resource Investment Index, Duncan Hs ranks #7 of 11 public schools in Duncan, OK.
Enrollment
981
Oklahoma · 2024-25 NCES data
Teachers (FTE)
52.0
Federal CCD staff survey
Students per teacher
18.9:1
vs 16.1:1 Oklahoma avg
+17% vs state
How Duncan Hs compares with Oklahoma and U.S. medians
Slightly above state median
18.9:1 - 2.8 above the Oklahoma state median of 16.1:1, indicating larger average class loads than typical schools in the state.
Duncan Hs is a large high school in Duncan, Oklahoma, enrolling 981 students.
Class loads run somewhat heavier than typical: 18.9:1 puts it in the larger third of Oklahoma schools by student-teacher ratio.
By headcount it is one of the larger campuses in Oklahoma, bigger than 96% of state schools at 981 students.
Its Resource Investment Index sits near the middle of the pack among 1,778 scored Oklahoma schools.
Its student body is led by White (59%) and Hispanic or Latino (21%) (diversity index 60/100).
On the academic-pipeline side it reports 4 Advanced Placement courses.
Counselor coverage is strong, about 245 students per counselor, inside the American School Counselor Association's recommended 250:1.
16.3% of students were chronically absent in the 2021-22 collection, in line with the post-pandemic national range.
Its district draws 19.9% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
The federal civil-rights collection also records 1 expulsion at this campus for 2021-22.
Among Duncan's high schools, it stands alongside Empire Hs (150 students): Duncan Hs is larger than that campus by headcount and runs heavier classes (18.9:1 vs 18.8:1).
Duncan also operates Duncan Ms (696 students) and Emerson Es (336 students) alongside Duncan Hs.
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
Duncan Hs on the metrics families compare, against Oklahoma and U.S. means.
| Metric | This school | vs Oklahoma | Oklahoma avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 18.9:1 | ▲ 17% | 16.1:1 | 15.7:1 |
| Enrollment | 981 | top 4% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
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.
Largest group: White at 58.5% of enrollment.
Simpson diversity index - at 59.6, Duncan Hs is about as mixed as the Oklahoma school average of 59.6.
District-wide per-pupil expenditure for Duncan, which includes Duncan Hs.
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.
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Duncan Ms | Smaller | No free-lunch data | Lower S:T ratio |
| Emerson Es | Smaller | No free-lunch data | Lower S:T ratio |
| Horace Mann Es | Smaller | No free-lunch data | Lower S:T ratio |
| Woodrow Wilson Es | Smaller | No free-lunch data | Similar S:T ratio |
| Plato Es | Smaller | No free-lunch data | Similar S:T ratio |
Comparisons are relative to Duncan Hs's own figures; each column derives from NCES Common Core of Data.
1 comparable high schools (grades 9-12) serving the same city.
Matched by enrollment size and by staffing ratio across all of Oklahoma, not just this city - a different peer set than the local comparisons above.
Next steps
Verify locally before acting on Duncan Hs's federal record.
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.
Duncan Hs has 981 students enrolled. It is a high school in Duncan, OK.
The student-teacher ratio at Duncan Hs is 18.9:1, which is 17% higher than the Oklahoma average of 16.1:1 and 20% higher than the national average of 15.7:1.
The largest demographic group at Duncan Hs is White at 58.5% of enrollment, in Duncan, OK. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 59.6/100.
Duncan Hs 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).
By Resource Investment Index, Duncan Hs ranks #7 of 11 public schools in Duncan, OK. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Duncan on the city page.
Duncan Hs earns 45/100 on the Resource Investment Index, with class sizes larger than 82% of Oklahoma schools. It is also one of the largest schools in Oklahoma. 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.
Besides Duncan Hs, Duncan also operates Duncan Ms (696 students), Emerson Es (336 students), and Horace Mann Es (327 students). See the Duncan district page for the complete list.
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.
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Last updated:
PlainSchools, “Duncan Hs, Duncan OK.” Compiled from NCES Common Core of Data, Civil Rights Data Collection, and the NCES F-33 finance survey; data as of June 2026. https://plainschools.com/schools/duncan-hs-ok
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