Enrollment
620
Arizona · 2024-25 NCES data
2024-25 NCES data Middle school (grades 6-8) NCES 040324001101
San Luis Middle School — San Luis, AZ
Federal NCES profile for San Luis Middle School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators — Resource Investment Index 28/100.
👥 Class size 0
🌟 Gifted program 70
🎓 Counselors 38
📋 Attendance 3
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: Gadsden Elementary District (4505) · 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.
Teachers (FTE)
19.0
Federal CCD staff survey
Students per teacher
30:1
vs 17.7:1 Arizona avg
+69% vs state
Free-lunch eligible
90.9%
vs 48.3% Arizona avg
+88% vs state
Student-teacher ratio in context
How San Luis Middle School compares with Arizona and U.S. medians
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
San Luis Middle School reports 620 enrolled students to the National Center for Education Statistics (NCES) alongside 19.0 full-time-equivalent teachers, producing a 30:1 student-teacher ratio. That figure sits 69% above the Arizona state mean of 17.7:1, signalling larger average class loads than peers in the same state. Against the national 2024-25 average of 15.9:1, it is 89% higher, a useful calibration for families comparing districts across state lines.
Title I and federal lunch eligibility offer another window into the student body: 90.9% of pupils qualify for free meals, a proxy for household income that federal programs use to direct funding. The free-lunch share is 88% above the Arizona average and 75% above the national baseline. Counselor coverage works out to roughly 310 students per counselor, above the ASCA-recommended ceiling of 250:1. Chronic absenteeism — missing 10% or more of school days — stands at 38.7% according to the 2021-22 Civil Rights Data Collection.
On the finance side, the surrounding Gadsden Elementary District (4505) spends $11,550 per pupil district-wide, below the Arizona average of $15,070 and below the national average of $19,490. Revenue comes 11.0% from local sources (property taxes), 60.7% from the state, and 28.3% from federal programs per the NCES F-33 finance survey. Taken together, these measurements produce a Resource Investment Index of 28/100 (F), calculated from 4 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 San Luis Middle 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 |
|---|---|---|---|---|
| Students per teacher | 30:1 | ▲ 69% | 17.7:1 | 15.9:1 |
| Free-lunch eligible | 90.9% | ▲ 88% | 48.3% | 51.8% |
| Enrollment | 620 | top 73% | — | — |
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
90.9%
free-lunch eligible
— 88% above the Arizona average of 48.3%
Above the 40% Title I schoolwide threshold — federal funds support the whole school, not individual students.
Staffing depth
30:1
students per teacher
— 69% above state mean
Top 98% in Arizona — lower ratio than 2% of state schools
Above 20:1 — larger class loads than the typical U.S. public school; staffing is stretched relative to enrollment.
Engagement
38.7%
chronically absent (missed 10%+ of school days)
Chronic absenteeism at or above 20% — the CDC threshold for "high" — signals significant barriers to regular attendance.
Funding equity
$11,550
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
Counselors2.0 FTE
Per 310 students — the combined health-and-guidance staffing load for this school.
Discipline context
78
in-school suspensions + 3 out-of-school
Suspension rate: 12.6 per 100 students. Combined in-school and out-of-school rate: 13.1 per 100 students. Reported via the Civil Rights Data Collection. Includes 1 expulsion.
Overview
Enrollment 620 Top 73% in Arizona — larger than 27% of 2,186 state schools
Teachers (FTE) 19.0
Students per teacher 30:1 +69% vs state
Free-lunch eligible 90.9% +88% vs state
NCES ID 040324001101
Student demographics
Hispanic or Latino 99.4%
White 0.6%
Largest group: Hispanic or Latino at 99.4% of enrollment.
Programs & staff
Gifted & talented Yes
Counselors (FTE) 2.0
Students per counselor 310:1
Discipline & special education
Chronically absent 38.7%
In-school suspensions 78
Out-of-school suspensions 3
Expulsions 1
Funding & spending
District-wide per-pupil expenditure for Gadsden Elementary District (4505), which includes San Luis Middle School.
$11,550
Per student
-23%
vs Arizona
Avg $15,070
-41%
vs U.S.
Avg $19,490
Revenue mix
Local 11.0%
State 60.7%
Federal 28.3%
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
- 766
- Students per teacher
- 28.6:1
- Enrollment
- 760
- Students per teacher
- 27:1
- Enrollment
- 662
- Students per teacher
- 28.6:1
- Enrollment
- 652
- Students per teacher
- 27.2:1
- Enrollment
- 646
- Students per teacher
- 26.7:1
Similar middle schools in San Luis
1 comparable middle schools (grades 6-8) serving the same city.
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 San Luis Middle School
How many students attend San Luis Middle School?
San Luis Middle School has 620 students enrolled. It is a middle school in San Luis, AZ.
What is the student-teacher ratio at San Luis Middle School?
The student-teacher ratio at San Luis Middle School is 30:1, which is 69% higher than the Arizona average of 17.7:1 and 89% higher than the national average of 15.9:1.
What percentage of students receive free lunch at San Luis Middle School?
90.9% of students at San Luis Middle School are eligible for free lunch, compared to the Arizona average of 48.3%.
What is the racial and ethnic makeup of San Luis Middle School?
The largest demographic group at San Luis Middle School is Hispanic or Latino at 99.4%. The school serves a student body in San Luis, AZ.
What is the Resource Investment Index for San Luis Middle School?
San Luis Middle School has a Resource Investment Index of 28/100 (F) based on 4 factors: student-teacher ratio, counselor availability, attendance rates. This index measures federal resource allocation — staffing levels, program availability, and support services — not standardized test scores or academic outcomes.