Enrollment
537
Texas · 2024-25 NCES data
Other / mixed grade configuration · San Antonio, TX
Martin El
Federal NCES profile for Martin El, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 42/100.
2024-25 NCES dataOther / mixed grade configurationNCES 483312012341
👥 S:T ratio 50
🌟 Gifted program 70
🎓 Counselors 46
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Martin El earns 42/100 on the Resource Investment Index, with class sizes smaller than 72% of Texas schools. It is also less racially and ethnically mixed than most Texas schools.
- #128 of 327
- schools in San Antonio · Resource Index
- 42
- Resource Index · Typical
- 12.5:1
- small classes for Texas
- 90.0%
- free-lunch eligible
Martin El has class sizes smaller than 72% of Texas schools. Computed live against every Texas school reporting to NCES.
By Resource Investment Index, Martin El ranks #128 of 327 schools in San Antonio, TX.
School address
District: Northside Isd · Texas
NCES ID 483312012341 Verify on NCES CCD record →
Teachers (FTE)
43.0
Federal CCD staff survey
Students per teacher
12.5:1
vs 14.7:1 Texas avg
-15% vs state
Free-lunch eligible
90.0%
vs 61.9% Texas avg
+45% vs state
Student-teacher ratio in context
How Martin El compares with Texas and U.S. medians
What stands out at Martin El
Martin El is a high-poverty, mid-sized combined-grade school in San Antonio, Texas, enrolling 537 students.
Class sizes run a bit leaner than typical: 12.5:1 puts it in the smaller third of Texas schools by student-teacher ratio.
Economic need is high: 90.0% of students qualify for free meals, 45% above the Texas average, a Title I-weighted population that federal funding formulas prioritise.
With 537 students, its enrollment sits close to the Texas median campus size.
Its Resource Investment Index sits near the middle of the pack among 8,960 scored Texas schools.
Against 1,924 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #608.
Its student body is predominantly Hispanic or Latino (95% of enrollment), among the less diverse in the state (diversity index 10/100).
Counselor coverage runs a bit thin, about 269 students per counselor, somewhat past the ASCA-recommended 250:1 benchmark.
Chronic absenteeism is elevated: 50.5% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
The surrounding Northside Isd spends $10,615 per pupil, 22% below the Texas average, a leaner-resourced district than most.
Its district draws 17.6% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
Northside Isd also operates Brennan H S (2,965 students) and Harlan H S (2,778 students) alongside Martin 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 Martin El compares
Martin 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 | 12.5:1 | ▼ 15% | 14.7:1 | 15.7:1 |
| Free-lunch eligible | 90.0% | ▲ 45% | 61.9% | 51.7% |
| Enrollment | 537 | top 45% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
12.5:1
Leaner classes than 71% of US schools, among the more generously staffed nationally.
537
Bigger than 66% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
90.0%
free-lunch eligible
- 45% above the Texas average of 61.9%
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
12.5:1
students per teacher
- 15% below state mean
Top 28% in Texas - lower ratio than 72% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
50.5%
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
$10,615
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
Counselors2.0 FTE
Per 269 students, the combined health-and-guidance staffing load for this school.
Discipline context
35
in-school suspensions + 4 out-of-school
Suspension rate: 6.5 per 100 students. Combined in-school and out-of-school rate: 7.3 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 94.8%
African American 2.4%
White 1.9%
Two or More 0.9%
Largest group: Hispanic or Latino at 94.8% of enrollment.
Student-body diversity index 10.0/100
Simpson diversity index - at 10.0, Martin El is less mixed than the Texas school average of 44.7.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Northside Isd, which includes Martin El.
$10,615
Per student
-22%
vs Texas
Avg $13,644
-36%
vs U.S.
Avg $16,593
Revenue mix
Local 60.8%
State 21.6%
Federal 17.6%
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 Martin El Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Brennan H S | Larger | Lower economic need | Higher S:T ratio |
| Harlan H S | Larger | Lower economic need | Higher S:T ratio |
| Clark H S | Larger | Lower economic need | Higher S:T ratio |
| Taft H S | Larger | Lower economic need | Higher S:T ratio |
| Brandeis H S | Larger | Lower economic need | Higher S:T ratio |
Comparisons are relative to Martin El's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 2,965
- Students per teacher
- 16.9:1
- Resource Index
- 32/100
- Enrollment
- 2,778
- Students per teacher
- 18.9:1
- Resource Index
- 38/100
- Enrollment
- 2,750
- Students per teacher
- 16.9:1
- Resource Index
- 37/100
- Enrollment
- 2,670
- Students per teacher
- 16.6:1
- Resource Index
- 43/100
- Enrollment
- 2,657
- Students per teacher
- 16.8:1
- Resource Index
- 41/100
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 (~537 students)
Similar student-teacher ratio (~12.5:1)
Next steps
Verify locally before acting on Martin El's federal record.
- Compare Martin El against another school. Compare schools
- Northside 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 Martin El
How many students attend Martin El?
Martin El has 537 students enrolled. It is a public school in San Antonio, TX.
What is the student-teacher ratio at Martin El?
The student-teacher ratio at Martin El is 12.5:1, which is 15% lower than the Texas average of 14.7:1 and 20% 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 Martin El?
90.0% of students at Martin El are eligible for free lunch, compared to the Texas average of 61.9%.
What is the racial and ethnic makeup of Martin El?
The largest demographic group at Martin El is Hispanic or Latino at 94.8% of enrollment, in San Antonio, TX.
What is the Resource Investment Index for Martin El?
Martin El has a Resource Investment Index of 42/100 (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 Martin El rank among schools in San Antonio?
By Resource Investment Index, Martin El ranks #128 of 327 schools in San Antonio, TX. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all schools in San Antonio on the city page.
Is Martin El a good school?
Martin El earns 42/100 on the Resource Investment Index, with class sizes smaller than 72% of Texas schools. It is also less racially and ethnically mixed than most 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 Northside Isd?
Besides Martin El, Northside Isd also operates Brennan H S (2,965 students), Harlan H S (2,778 students), and Clark H S (2,750 students). See the Northside 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.