Enrollment
343
Arizona · 2024-25 NCES data
Other / mixed grade configuration · Chandler, AZ
San Marcos Elementary School
Federal NCES profile for San Marcos Elementary School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 30/100.
2024-25 NCES dataOther / mixed grade configurationNCES 040187000125
👥 S:T ratio 57
🌟 Gifted program 30
🎓 Counselors 31
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
San Marcos Elementary School earns 30/100 on the Resource Investment Index, even as it posts class sizes smaller than 90% of Arizona schools.
- #10 of 44
- schools in Chandler · Resource Index
- 30
- Resource Index · Lower
- 10.7:1
- small classes for Arizona
- 75.7%
- free-lunch eligible
San Marcos Elementary School has class sizes smaller than 90% of Arizona schools. Computed live against every Arizona school reporting to NCES.
By Resource Investment Index, San Marcos Elementary School ranks #10 of 44 schools in Chandler, AZ.
School address
District: Chandler Unified District #80 (4242) · Arizona
NCES ID 040187000125 Verify on NCES CCD record →
Teachers (FTE)
32.0
Federal CCD staff survey
Students per teacher
10.7:1
vs 17:1 Arizona avg
-37% vs state
Free-lunch eligible
75.7%
vs 48.3% Arizona avg
+57% vs state
Student-teacher ratio in context
How San Marcos Elementary School compares with Arizona and U.S. medians
What stands out at San Marcos Elementary School
San Marcos Elementary School is a high-poverty, mid-sized combined-grade school in Chandler, Arizona, enrolling 343 students.
Classes run notably small here: at 10.7:1, San Marcos Elementary School is leaner than roughly 90% of Arizona schools and 37% under the state's 17:1 norm, more adult attention per pupil than most peers.
Economic need is high: 75.7% of students qualify for free meals, 57% above the Arizona average, a Title I-weighted population that federal funding formulas prioritise.
With 343 students, its enrollment sits close to the Arizona median campus size.
Its Resource Investment Index sits near the middle of the pack among 2,064 scored Arizona schools.
Against 242 statewide peers matched on enrollment and economic need, it ranks mid-pack at #135.
Its student body is predominantly Hispanic or Latino (81% of enrollment) (diversity index 34/100).
Counselor availability sits well past the ASCA benchmark, roughly 343 students sharing each counselor, though short of the most stretched campuses.
Chronic absenteeism is elevated: 52.2% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
The surrounding Chandler Unified District #80 (4242) spends $9,696 per pupil, 26% below the Arizona average, a leaner-resourced district than most.
Discipline events run high: 137 in- and out-of-school suspensions were reported for 343 students in the 2021-22 Civil Rights Data Collection.
Among Chandler's public schools, it stands alongside Primavera - Online (6,378 students): San Marcos Elementary School is smaller than that campus by headcount.
Chandler Unified District #80 (4242) also operates Hamilton High School (3,444 students) and Chandler High School (3,179 students) alongside San Marcos Elementary 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 Marcos Elementary School compares
San Marcos Elementary 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 | 10.7:1 | ▼ 37% | 17:1 | 15.7:1 |
| Free-lunch eligible | 75.7% | ▲ 57% | 48.3% | 51.7% |
| Enrollment | 343 | top 58% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
10.7:1
Leaner classes than 85% of US schools, among the more generously staffed nationally.
343
Bigger than 39% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
75.7%
free-lunch eligible
- 57% 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
10.7:1
students per teacher
- 37% below state mean
Top 10% in Arizona - lower ratio than 90% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
52.2%
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
$9,696
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
Counselors1.0 FTE
Per 343 students, the combined health-and-guidance staffing load for this school.
Discipline context
83
in-school suspensions + 54 out-of-school
Suspension rate: 24.2 per 100 students. Combined in-school and out-of-school rate: 39.9 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
Hispanic or Latino 80.8%
African American 8.7%
White 4.1%
American Indian / Alaska Native 3.2%
Asian 1.5%
Native Hawaiian / Pacific Islander 0.9%
Two or More 0.9%
Largest group: Hispanic or Latino at 80.8% of enrollment.
Student-body diversity index 33.6/100
Simpson diversity index - at 33.6, San Marcos Elementary School is less mixed than the Arizona school average of 47.2.
Programs
Funding & spending
District-wide per-pupil expenditure for Chandler Unified District #80 (4242), which includes San Marcos Elementary School.
$9,696
Per student
-26%
vs Arizona
Avg $13,145
-42%
vs U.S.
Avg $16,593
Revenue mix
Local 42.7%
State 44.2%
Federal 13.1%
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 San Marcos Elementary School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Hamilton High School | Larger | Lower economic need | Higher S:T ratio |
| Chandler High School | Larger | Lower economic need | Higher S:T ratio |
| Basha High School | Larger | Lower economic need | Higher S:T ratio |
| Dr. Camille Casteel High School | Larger | Lower economic need | Higher S:T ratio |
| Perry High School | Larger | Lower economic need | Higher S:T ratio |
Comparisons are relative to San Marcos Elementary School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 3,444
- Students per teacher
- 19.3:1
- Resource Index
- 25/100
- Enrollment
- 3,179
- Students per teacher
- 16.6:1
- Resource Index
- 25/100
- Enrollment
- 2,826
- Students per teacher
- 20.9:1
- Resource Index
- 18/100
- Enrollment
- 2,816
- Students per teacher
- 18.6:1
- Resource Index
- 24/100
- Enrollment
- 2,373
- Students per teacher
- 16.9:1
- Resource Index
- 34/100
Similar other schools in Chandler
1 comparable other schools (grades Mixed) serving the same city.
Similar other 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 (~343 students)
Similar student-teacher ratio (~10.7:1)
Next steps
Verify locally before acting on San Marcos Elementary School's federal record.
- Compare San Marcos Elementary School against another school. Compare schools
- Chandler Unified District #80 (4242)'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 Marcos Elementary School
How many students attend San Marcos Elementary School?
San Marcos Elementary School has 343 students enrolled. It is a public school in Chandler, AZ.
What is the student-teacher ratio at San Marcos Elementary School?
The student-teacher ratio at San Marcos Elementary School is 10.7:1, which is 37% lower than the Arizona average of 17:1 and 32% lower 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 San Marcos Elementary School?
75.7% of students at San Marcos Elementary School are eligible for free lunch, compared to the Arizona average of 48.3%.
What is the racial and ethnic makeup of San Marcos Elementary School?
The largest demographic group at San Marcos Elementary School is Hispanic or Latino at 80.8% of enrollment, in Chandler, AZ.
What is the Resource Investment Index for San Marcos Elementary School?
San Marcos Elementary School has a Resource Investment Index of 30/100 (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 Marcos Elementary School rank among schools in Chandler?
By Resource Investment Index, San Marcos Elementary School ranks #10 of 44 schools in Chandler, AZ. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all schools in Chandler on the city page.
Is San Marcos Elementary School a good school?
San Marcos Elementary School earns 30/100 on the Resource Investment Index, even as it posts class sizes smaller than 90% of 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 Chandler Unified District #80 (4242)?
Besides San Marcos Elementary School, Chandler Unified District #80 (4242) also operates Hamilton High School (3,444 students), Chandler High School (3,179 students), and Basha High School (2,826 students). See the Chandler Unified District #80 (4242) 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.