Enrollment
620
Arizona · 2024-25 NCES data
Middle school (grades 6-8) · San Luis, AZ
San Luis Middle School
Federal NCES profile for San Luis Middle School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 28/100.
2024-25 NCES dataMiddle school (grades 6-8)NCES 040324001101
👥 S:T ratio 0
🌟 Gifted program 70
🎓 Counselors 38
📋 Attendance 3
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
San Luis Middle School earns 28/100 on the Resource Investment Index, with class sizes larger than 99% of Arizona schools. It is also less racially and ethnically mixed than most Arizona schools.
- #5 of 12
- public schools in San Luis · Resource Index
- 28
- Resource Index · Lower
- 32.6:1
- large classes for Arizona
- 90.9%
- free-lunch eligible
San Luis Middle School has class sizes larger than 99% of Arizona schools. Computed live against every Arizona school reporting to NCES.
By Resource Investment Index, San Luis Middle School ranks #5 of 12 public schools in San Luis, AZ.
School address
District: Gadsden Elementary District (4505) · Arizona
NCES ID 040324001101 Verify on NCES CCD record →
Teachers (FTE)
19.0
Federal CCD staff survey
Students per teacher
32.6:1
vs 17:1 Arizona avg
+92% 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
What stands out at San Luis Middle School
San Luis Middle School is a high-poverty, mid-sized middle school in San Luis, Arizona, enrolling 620 students.
Class loads run heavy: 32.6:1 is larger than about 99% of Arizona schools and 92% above the 17:1 state mean, so each teacher carries more students than is typical.
Economic need is high: 90.9% of students qualify for free meals, 88% above the Arizona average, a Title I-weighted population that federal funding formulas prioritise.
Enrollment of 620 puts it in the larger third of Arizona schools by headcount.
Its Resource Investment Index lands in the lower third of 2,064 scored Arizona schools.
Against 115 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #44.
Its student body is predominantly Hispanic or Latino (99% of enrollment), among the less diverse in the state (diversity index 1/100).
Counselor coverage runs a bit thin, about 310 students per counselor, somewhat past the ASCA-recommended 250:1 benchmark.
Chronic absenteeism is elevated: 38.7% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
The surrounding Gadsden Elementary District (4505) spends $10,085 per pupil, 23% below the Arizona average, a leaner-resourced district than most.
Its district draws 28.3% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
The federal civil-rights collection also records 1 expulsion at this campus for 2021-22.
Among San Luis's middle schools, it stands alongside Southwest Jr. High School (652 students): San Luis Middle School is smaller than that campus by headcount and runs heavier classes (32.6:1 vs 26.1:1).
Gadsden Elementary District (4505) also operates Cesar Chavez Elementary (766 students) and Desert View Elementary (760 students) alongside San Luis Middle School.
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 San Luis Middle School compares
San Luis Middle 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 | 32.6:1 | ▲ 92% | 17:1 | 15.7:1 |
| Free-lunch eligible | 90.9% | ▲ 88% | 48.3% | 51.7% |
| Enrollment | 620 | top 27% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
32.6:1
Leaner classes than 1% of US schools, heavier class loads than most.
620
Bigger than 74% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
90.9%
free-lunch eligible
- 88% above the Arizona average of 48.3%
Well above the 40% Title I schoolwide threshold, among the highest-need profiles in the state; federal funds support the whole school, not individual students.
Staffing depth
32.6:1
students per teacher
- 92% above state mean
Top 99% in Arizona - lower ratio than 1% of state schools
Well above 20:1, one of the more stretched staffing loads nationally relative to enrollment.
Engagement
38.7%
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
$10,085
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
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
- 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
Hispanic or Latino 99.4%
White 0.6%
Largest group: Hispanic or Latino at 99.4% of enrollment.
Student-body diversity index 1.2/100
Simpson diversity index - at 1.2, San Luis Middle School is less mixed than the Arizona school average of 47.2.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Gadsden Elementary District (4505), which includes San Luis Middle School.
$10,085
Per student
-23%
vs Arizona
Avg $13,145
-39%
vs U.S.
Avg $16,593
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.
How San Luis Middle School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Cesar Chavez Elementary | Similar size | Lower economic need | Lower S:T ratio |
| Desert View Elementary | Similar size | Lower economic need | Lower S:T ratio |
| Arizona Desert Elementary School | Similar size | Similar economic need | Lower S:T ratio |
| Southwest Jr. High School | Similar size | Lower economic need | Lower S:T ratio |
| Ed Pastor Elementary 4 | Similar size | Lower economic need | Lower S:T ratio |
Comparisons are relative to San Luis Middle School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 766
- Students per teacher
- 29.5:1
- Resource Index
- 17/100
- Enrollment
- 760
- Students per teacher
- 27.1:1
- Resource Index
- 24/100
- Enrollment
- 662
- Students per teacher
- 30.1:1
- Resource Index
- 17/100
- Enrollment
- 652
- Students per teacher
- 26.1:1
- Resource Index
- 26/100
- Enrollment
- 646
- Students per teacher
- 28.1:1
- Resource Index
- 21/100
Similar middle schools in San Luis
1 comparable middle schools (grades 6-8) serving the same city.
Similar middle 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 (~620 students)
Next steps
Verify locally before acting on San Luis Middle School's federal record.
- Compare San Luis Middle School against another school. Compare schools
- Gadsden Elementary District (4505)'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 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 32.6:1, which is 92% higher than the Arizona average of 17:1 and 108% higher than the national average of 15.7:1.
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% of enrollment, 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 (lower 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 San Luis Middle School rank among public schools in San Luis?
By Resource Investment Index, San Luis Middle School ranks #5 of 12 public schools in San Luis, AZ. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in San Luis on the city page.
Is San Luis Middle School a good school?
San Luis Middle School earns 28/100 on the Resource Investment Index, with class sizes larger than 99% of Arizona schools. It is also less racially and ethnically mixed than most Arizona 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 Gadsden Elementary District (4505)?
Besides San Luis Middle School, Gadsden Elementary District (4505) also operates Cesar Chavez Elementary (766 students), Desert View Elementary (760 students), and Arizona Desert Elementary School (662 students). See the Gadsden Elementary District (4505) 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.