Enrollment
618
Texas · 2024-25 NCES data
Other / mixed grade configuration · Arlington, TX
Duff El
Federal NCES profile for Duff El, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 40/100.
2024-25 NCES dataOther / mixed grade configurationNCES 480870000242
👥 S:T ratio 35
🌟 Gifted program 70
🎓 Counselors 0
📋 Attendance 55
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Duff El earns 40/100 on the Resource Investment Index, with class sizes larger than 74% of Texas schools.
- #22 of 63
- schools in Arlington · Resource Index
- 40
- Resource Index · Typical
- 16.3:1
- large classes for Texas
- 41.8%
- free-lunch eligible
Duff El has class sizes larger than 74% of Texas schools. Computed live against every Texas school reporting to NCES.
By Resource Investment Index, Duff El ranks #22 of 63 schools in Arlington, TX.
School address
District: Arlington Isd · Texas
NCES ID 480870000242 Verify on NCES CCD record →
Teachers (FTE)
38.0
Federal CCD staff survey
Students per teacher
16.3:1
vs 14.7:1 Texas avg
+11% vs state
Free-lunch eligible
41.8%
vs 61.9% Texas avg
-32% vs state
Student-teacher ratio in context
How Duff El compares with Texas and U.S. medians
What stands out at Duff El
Duff El is a mid-sized combined-grade school in Arlington, Texas, enrolling 618 students.
Class loads run somewhat heavier than typical: 16.3:1 puts it in the larger third of Texas schools by student-teacher ratio.
Economic need runs somewhat below the state's typical profile, with 41.8% of students eligible for free meals.
Enrollment of 618 puts it in the larger third of Texas schools by headcount.
Its Resource Investment Index lands in the lower third of 8,960 scored Texas schools.
Against 1,201 statewide peers matched on enrollment and economic need, it ranks mid-pack at #841.
Its student body is led by White (52%) and Hispanic or Latino (32%) (diversity index 62/100).
Counselor access is stretched at roughly 618 students per counselor, well above the ASCA-recommended 250:1 ceiling.
17.8% of students were chronically absent in the 2021-22 collection, in line with the post-pandemic national range.
Its district draws 19.1% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
Arlington Isd also operates Martin H S (3,535 students) and Sam Houston H S (3,208 students) alongside Duff El.
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 Duff El compares
Duff El on the metrics families compare, against Texas and U.S. means.
| Metric | This school | vs Texas | Texas avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 16.3:1 | ▲ 11% | 14.7:1 | 15.7:1 |
| Free-lunch eligible | 41.8% | ▼ 32% | 61.9% | 51.7% |
| Enrollment | 618 | top 35% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
16.3:1
Leaner classes than 36% of US schools, a middle-of-the-pack class size.
618
Bigger than 74% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
41.8%
free-lunch eligible
- 32% below the Texas average of 61.9%
Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.
Staffing depth
16.3:1
students per teacher
- 11% above state mean
Top 74% in Texas - lower ratio than 26% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
17.8%
chronically absent (missed 10%+ of school days)
In the 15-20% range, nearing the "high" absenteeism threshold.
Funding equity
$11,489
per pupil, district-wide
- below Texas avg of $13,644
Well below the U.S. average per-pupil spend, a notably leaner funding position that may affect programs, facilities, and staffing.
Support staff
Counselors1.0 FTE
Per 618 students, the combined health-and-guidance staffing load for this school.
Discipline context
15
in-school suspensions + 4 out-of-school
Suspension rate: 2.4 per 100 students. Combined in-school and out-of-school rate: 3.1 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 51.6%
Hispanic or Latino 31.6%
African American 9.9%
Two or More 3.6%
Asian 2.9%
American Indian / Alaska Native 0.5%
Largest group: White at 51.6% of enrollment.
Student-body diversity index 62.2/100
Simpson diversity index - at 62.2, Duff El is more mixed than the Texas school average of 44.7.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Arlington Isd, which includes Duff El.
$11,489
Per student
-16%
vs Texas
Avg $13,644
-31%
vs U.S.
Avg $16,593
Revenue mix
Local 57.0%
State 23.9%
Federal 19.1%
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 Duff El Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Martin H S | Larger | Similar economic need | Similar S:T ratio |
| Sam Houston H S | Larger | Higher economic need | Similar S:T ratio |
| Arlington H S | Larger | Higher economic need | Similar S:T ratio |
| Lamar H S | Larger | Higher economic need | Similar S:T ratio |
| Bowie H S | Larger | Higher economic need | Lower S:T ratio |
Comparisons are relative to Duff El's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 3,535
- Students per teacher
- 17.1:1
- Resource Index
- 46/100
- Enrollment
- 3,208
- Students per teacher
- 15.5:1
- Resource Index
- 52/100
- Enrollment
- 2,580
- Students per teacher
- 15.9:1
- Resource Index
- 50/100
- Enrollment
- 2,457
- Students per teacher
- 14.9:1
- Resource Index
- 54/100
- Enrollment
- 2,140
- Students per teacher
- 13.7:1
- Resource Index
- 42/100
Similar other schools statewide
Matched by enrollment size and by staffing ratio across all of Texas, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~618 students)
Next steps
Verify locally before acting on Duff El's federal record.
- Compare Duff El against another school. Compare schools
- Arlington Isd'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 Duff El
How many students attend Duff El?
Duff El has 618 students enrolled. It is a public school in Arlington, TX.
What is the student-teacher ratio at Duff El?
The student-teacher ratio at Duff El is 16.3:1, which is 11% higher than the Texas average of 14.7:1 and 4% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Duff El?
41.8% of students at Duff El are eligible for free lunch, compared to the Texas average of 61.9%.
What is the racial and ethnic makeup of Duff El?
The largest demographic group at Duff El is White at 51.6% of enrollment, in Arlington, TX. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 62.2/100.
What is the Resource Investment Index for Duff El?
Duff El has a Resource Investment Index of 40/100 (typical reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Duff El rank among schools in Arlington?
By Resource Investment Index, Duff El ranks #22 of 63 schools in Arlington, TX. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all schools in Arlington on the city page.
Is Duff El a good school?
Duff El earns 40/100 on the Resource Investment Index, with class sizes larger than 74% of Texas 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 Arlington Isd?
Besides Duff El, Arlington Isd also operates Martin H S (3,535 students), Sam Houston H S (3,208 students), and Arlington H S (2,580 students). See the Arlington Isd 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.