7 public K-12 schools in Duncan from NCES Common Core of Data: enrollment, grade span, demographics, and Civil Rights Data Collection statistics for every active campus.
7 public schools ranked by quality score. NCES CCD 2024-25 data.
The highest-ranked of Duncan's 7 public schools is James F. Byrnes High, scoring 41/100, against a city average of 46.1/100. Computed live across every Duncan campus reporting to NCES.
How the Duncan Public-School Landscape Breaks Down
Duncan, SC enrolls 6,927 students across 7 public schools reporting to the National Center for Education Statistics. The average student-teacher ratio across the city is 14.7:1, and the composite quality score, derived from student-teacher ratio, counselor access, gifted-program availability, and CRDC attendance data, averages 46.1/100. Schools must report at least five campuses in a city to appear in this listing, which is why very small towns may redirect to the broader county or state view.
The most-resourced campus in Duncan on this index is James F. Byrnes High, at 41/100 on the Resource Investment Index with 2,391 enrolled students. What the index does and doesn't measure; click any school below for its full component breakdown.
Duncan spans 1 district, each filing its own NCES F-33 return, per-pupil spending can vary between neighbouring campuses. Sort the table below by enrollment, level, or district; click any school for its full profile.
James F. Byrnes High accounts for 34.5% of all Duncan public-school enrollment
That dominant concentration means Duncan-wide averages can mask substantial variation outside the dominant entity. Grade level: High. A dominant campus often anchors a city's program landscape and absorbs a disproportionate share of district capital and staffing decisions. When one entity dominates a region's footprint, its programmatic and budget decisions effectively set policy for a majority of the affected population.
Duncan school enrollment varies 4.1× across entities
Duncan school enrollment ranges from 584 students (lowest) to 2,391 students (highest), a spread of 1,807 students. That relatively narrow ratio reflects an unusually homogeneous school portfolio for a city this size. Per-school staffing, programme depth, and capital-renovation cycles often diverge inside the same city based on enrollment shape, a 200-student magnet runs a different operational model than a 2,000-student comprehensive high school.
Duncan has higher-than-average Title I eligibility — 57.4% of the population qualifies for free or reduced-price lunch
free or reduced-price lunch eligibility is the federal threshold for Title I funding allocations, established under the Every Student Succeeds Act (ESSA, 2015). Areas above 75% eligibility receive concentration grants on top of the basic Title I formula. Regions with eligibility this high typically draw a substantially larger federal funding share relative to their local tax base, which can either offset or reinforce existing gaps depending on allocation policy.
Duncan operates only 1 school district — one of the single most consolidated governance structures in the country
Most Duncan school districts are a single unified district covering the whole city, a structural feature that simplifies inter-school comparison but concentrates policy authority, and the count here is near the floor observed nationally. Consolidation produces narrower variance because resources pool across a large population, but it can also mask intra-school district inequities — sub-school district differences within a single school district are not visible at this aggregation level. Consolidated systems typically rely more heavily on top-down funding formulas than on local revenue variability.
Duncan student-teacher ratio is 14.7:1 — near the typical range (US average ~15.7) — aligned with the U.S. average of approximately 15.7:1
student-teacher ratio is the simplest comparative metric but it does not capture the full picture: the ratio counts FTE classroom teachers against total enrollment, push-in specialists, English-language aides, special-education co-teachers, and counselors are not included in most reporting Variation between sub-units within Duncan is typically wider than the Duncan-aggregate figure suggests.
Most racially and ethnically mixed schools in Duncan
Ranked by the Simpson student-body diversity index (0-100) from NCES race and ethnicity data, where higher means a more evenly mixed student body. It measures mix, not quality.
The highest-ranked school in Duncan is James F. Byrnes High with a quality score of 41/100. There are 7 public schools in Duncan with 6,927 total students.
How many schools are in Duncan, SC? ▼
Duncan has 7 public schools with a total enrollment of 6,927 students. Average student-teacher ratio: 14.7:1.
Data from NCES Common Core of Data (CCD) 2024-25 and Civil Rights Data Collection (CRDC) 2021-22. Quality scores based on student-teacher ratio,
counselor access, gifted programs, and attendance. Schools must have 5+ in the city to be listed.
Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the NCES Common Core of Data (CCD). Consult a qualified professional before making decisions based on this data.
Read our methodology, which explains how this data is sourced, computed, and verified.
