Enrollment
56
Arizona · 2024-25 NCES data
2024-25 NCES data Other / mixed grade configuration NCES 040021902367 Charter school
Robert L. Duffy High School — Phoenix, AZ
Federal NCES profile for Robert L. Duffy High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators — Resource Investment Index 30/100.
🌟 Gifted program 30
How this works: Each indicator above is scored 0–100 from federal NCES and CRDC data, then averaged into the Resource Investment Index. This measures resource allocation — staffing, programs, and support services — not standardized test scores or academic outcomes. Full methodology →
School address
District: Career Success Schools (79047) · Arizona
Public location data per NCES (National Center for Education Statistics) Common Core of Data. Verify the school's current address on the NCES CCD record.
Free-lunch eligible
69.6%
vs 48.3% Arizona avg
+44% vs state
The federal record — no proprietary index, no editorial formula.
PlainSchools publishes the actual federal measurements — enrollment, staffing, demographics, discipline, and finance — straight from the NCES Common Core of Data, CRDC, and F-33 surveys. No composite rating, no opinion-based score on top. You get the same raw numbers researchers and policymakers use, with benchmarks, spending context, and equity indicators computed from the same federal datasets. Full methodology linked below.
What this school's NCES data tells you
Robert L. Duffy High School reports 56 enrolled students to the National Center for Education Statistics (NCES).
Title I and federal lunch eligibility offer another window into the student body: 69.6% of pupils qualify for free meals, a proxy for household income that federal programs use to direct funding. The free-lunch share is 44% above the Arizona average and 34% above the national baseline.
On the finance side, the surrounding Career Success Schools (79047) spends $10,233 per pupil district-wide, below the Arizona average of $15,070 and below the national average of $19,490. Revenue comes 1.5% from local sources (property taxes), 76.8% from the state, and 21.7% from federal programs per the NCES F-33 finance survey. Taken together, these measurements produce a Resource Investment Index of 30/100 (F), calculated from 1 distinct NCES and CRDC indicators measuring resource allocation rather than academic outcomes.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Robert L. Duffy High School compares
Cross-validating school-level NCES values against Arizona state and U.S. national means lets readers see whether this school is an outlier or in line with peers.
| Metric | This school | vs Arizona | Arizona avg | U.S. avg |
|---|---|---|---|---|
| Free-lunch eligible | 69.6% | ▲ 44% | 48.3% | 51.8% |
| Enrollment | 56 | top 12% | — | — |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
What the federal data reveals about equity at this school
Federal measurements — not ratings — surface the resource and opportunity picture. Below are the indicators that researchers, civil-rights monitors, and funding formulas use to assess equity.
Economic need
69.6%
free-lunch eligible
— 44% above the Arizona average of 48.3%
Above the 40% Title I schoolwide threshold — federal funds support the whole school, not individual students.
Funding equity
$10,233
per pupil, district-wide
— below Arizona avg of $15,070
Below the U.S. average per-pupil spend — funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
0
in-school suspensions + 0 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 0.0 per 100 students. Reported via the Civil Rights Data Collection.
Overview
Enrollment 56 Top 12% in Arizona — larger than 88% of 2,186 state schools
Teachers (FTE) —
Students per teacher —
Free-lunch eligible 69.6% +44% vs state
NCES ID 040021902367
Student demographics
Hispanic or Latino 75.0%
White 8.9%
African American 7.1%
Two or More 5.4%
American Indian / Alaska Native 3.6%
Largest group: Hispanic or Latino at 75.0% of enrollment.
Programs & staff
Counselors (FTE) 0.0
Discipline & special education
In-school suspensions 0
Out-of-school suspensions 0
Funding & spending
District-wide per-pupil expenditure for Career Success Schools (79047), which includes Robert L. Duffy High School.
$10,233
Per student
-32%
vs Arizona
Avg $15,070
-47%
vs U.S.
Avg $19,490
Revenue mix
Local 1.5%
State 76.8%
Federal 21.7%
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.
Other Schools in This District
- Enrollment
- 519
- Students per teacher
- —
- Enrollment
- 442
- Students per teacher
- —
- Enrollment
- 128
- Students per teacher
- —
Similar other schools in Phoenix
6 comparable other schools (grades Mixed) serving the same city.
Arizona Virtual Academy
Standard public school
4,476 students
Pinnacle High School
Standard public school
2,430 students 23.6:1 students per teacher
Paradise Valley High School
Standard public school
1,900 students 18.4:1 students per teacher
Barry Goldwater High School
Standard public school
1,602 students 20:1 students per teacher
North Canyon High School
Standard public school
1,560 students 20.9:1 students per teacher
Great Hearts Academies - Maryvale Prep
Standard public school
1,192 students
Educator & family resources
In-depth guides on understanding NCES data, school choice, and education funding.
Understanding NCES data
How CCD, CRDC and EDFacts feed every public-school number you see.
Choose a school district
Eight signals that matter more than the overall ranking number.
How schools are funded
Title I, F-33, state aid formulas and what per-pupil spending really means.
Chronic absenteeism
Why missing 10% of school matters and how it varies by district.
Magnet vs charter vs traditional
Three school types, three funding models, three sets of trade-offs.
School discipline data
What CRDC suspension and expulsion records do and don't reveal.
Frequently asked questions about Robert L. Duffy High School
How many students attend Robert L. Duffy High School?
Robert L. Duffy High School has 56 students enrolled. It is a other school in PHOENIX, AZ.
What percentage of students receive free lunch at Robert L. Duffy High School?
69.6% of students at Robert L. Duffy High School are eligible for free lunch, compared to the Arizona average of 48.3%.
What is the racial and ethnic makeup of Robert L. Duffy High School?
The largest demographic group at Robert L. Duffy High School is Hispanic or Latino at 75.0%. The school serves a diverse student body in PHOENIX, AZ.
What is the Resource Investment Index for Robert L. Duffy High School?
Robert L. Duffy High School has a Resource Investment Index of 30/100 (F) based on 1 factor: student-teacher ratio. This index measures federal resource allocation — staffing levels, program availability, and support services — not standardized test scores or academic outcomes. Limited indicators were available, so the index reflects partial data.