Enrollment
113
Arizona · 2024-25 NCES data
High school (grades 9-12) · Duncan, AZ
Duncan High School
Federal NCES profile for Duncan High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 24/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 040260000196
👥 S:T ratio 36
📚 AP courses 10
🌟 Gifted program 30
📋 Attendance 20
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Duncan High School earns 24/100 on the Resource Investment Index, with class sizes near the Arizona median.
- 24
- Resource Index · Lower
- 16.1:1
- students per teacher
- 32.6%
- free-lunch eligible
- 113
- students enrolled
Duncan High School has class sizes near the Arizona median. Computed live against every Arizona school reporting to NCES.
School address
District: Duncan Unified District (4228) · Arizona
NCES ID 040260000196 Verify on NCES CCD record →
Teachers (FTE)
7.0
Federal CCD staff survey
Students per teacher
16.1:1
vs 17:1 Arizona avg
-5% vs state
Free-lunch eligible
32.6%
vs 48.3% Arizona avg
-33% vs state
Student-teacher ratio in context
How Duncan High School compares with Arizona and U.S. medians
What stands out at Duncan High School
Duncan High School is a mid-sized high school in Duncan, Arizona, enrolling 113 students.
At 16.1:1, its student-teacher ratio sits close to the Arizona median, within a few percentage points of the 17:1 state norm, neither notably crowded nor notably small.
Economic need runs somewhat below the state's typical profile, with 32.6% of students eligible for free meals.
Enrollment of 113 puts it in the smaller third of Arizona schools by headcount.
Its Resource Investment Index sits near the middle of the pack among 2,064 scored Arizona schools.
Among 42 similarly sized, similarly resourced-need Arizona schools statewide, it ranks #33, in the lower tier once campus size and economic need are matched.
Its student body is led by White (80%) and Hispanic or Latino (18%) (diversity index 34/100).
No Advanced Placement courses are reported for this campus in the federal data.
Chronic absenteeism is elevated: 31.9% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Its district draws 22.2% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
Discipline events run high: 28 in- and out-of-school suspensions were reported for 113 students in the 2021-22 Civil Rights Data Collection.
Its district, Duncan Unified District (4228), also runs Duncan Elementary (256 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 Duncan High School compares
Duncan High School on the metrics families compare, against Arizona and U.S. means.
| Metric | This school | vs Arizona | Arizona avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 16.1:1 | ▼ 5% | 17:1 | 15.7:1 |
| Free-lunch eligible | 32.6% | ▼ 33% | 48.3% | 51.7% |
| Enrollment | 113 | top 81% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
16.1:1
Leaner classes than 37% of US schools, a middle-of-the-pack class size.
113
Bigger than 11% of US schools by enrollment, a small campus.
Equity indicators (what these measure)
Economic need
32.6%
free-lunch eligible
- 33% below the Arizona average of 48.3%
Below the 40% Title I threshold; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
16.1:1
students per teacher
- 5% below state mean
Top 46% in Arizona - lower ratio than 54% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
31.9%
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
$11,608
per pupil, district-wide
- below Arizona avg of $13,145
Well below the U.S. average per-pupil spend, a notably leaner funding position that may affect programs, facilities, and staffing.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
5
in-school suspensions + 23 out-of-school
Suspension rate: 4.4 per 100 students. Combined in-school and out-of-school rate: 24.8 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 79.6%
Hispanic or Latino 17.7%
Two or More 1.8%
American Indian / Alaska Native 0.9%
Largest group: White at 79.6% of enrollment.
Student-body diversity index 33.5/100
Simpson diversity index - at 33.5, Duncan High School is less mixed than the Arizona school average of 47.2.
Programs
AP program Not offered
Funding & spending
District-wide per-pupil expenditure for Duncan Unified District (4228), which includes Duncan High School.
$11,608
Per student
-12%
vs Arizona
Avg $13,145
-30%
vs U.S.
Avg $16,593
Revenue mix
Local 66.1%
State 11.8%
Federal 22.2%
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 Duncan High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Duncan Elementary | Larger | Similar economic need | Higher S:T ratio |
Comparisons are relative to Duncan High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 256
- Students per teacher
- 19.7:1
- Resource Index
- 17/100
Similar high schools statewide
Matched by enrollment size and by staffing ratio across all of Arizona, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~113 students)
Similar student-teacher ratio (~16.1:1)
Next steps
Verify locally before acting on Duncan High School's federal record.
- Compare Duncan High School against another school. Compare schools
- Duncan Unified District (4228)'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 Duncan High School
How many students attend Duncan High School?
Duncan High School has 113 students enrolled. It is a high school in Duncan, AZ.
What is the student-teacher ratio at Duncan High School?
The student-teacher ratio at Duncan High School is 16.1:1, which is 5% lower than the Arizona average of 17:1 and 3% higher than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What percentage of students receive free lunch at Duncan High School?
32.6% of students at Duncan High School are eligible for free lunch, compared to the Arizona average of 48.3%.
What is the racial and ethnic makeup of Duncan High School?
The largest demographic group at Duncan High School is White at 79.6% of enrollment, in Duncan, AZ.
What is the Resource Investment Index for Duncan High School?
Duncan High School has a Resource Investment Index of 24/100 (lower reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
Is Duncan High School a good school?
Duncan High School earns 24/100 on the Resource Investment Index, with class sizes near the Arizona median. 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 Duncan Unified District (4228)?
Besides Duncan High School, Duncan Unified District (4228) also operates Duncan Elementary (256 students). See the Duncan Unified District (4228) 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.