Enrollment
739
Texas · 2024-25 NCES data
Other / mixed grade configuration · San Antonio, TX
Sinclair El
Federal NCES profile for Sinclair El, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 32/100.
2024-25 NCES dataOther / mixed grade configurationNCES 481785005701
👥 S:T ratio 26
🌟 Gifted program 70
🎓 Counselors 0
📋 Attendance 31
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Sinclair El earns 32/100 on the Resource Investment Index, with class sizes larger than 88% of Texas schools.
- #242 of 327
- schools in San Antonio · Resource Index
- 32
- Resource Index · Typical
- 18.5:1
- large classes for Texas
- 67.7%
- free-lunch eligible
Sinclair El has class sizes larger than 88% of Texas schools. Computed live against every Texas school reporting to NCES.
By Resource Investment Index, Sinclair El ranks #242 of 327 schools in San Antonio, TX.
School address
District: East Central Isd · Texas
NCES ID 481785005701 Verify on NCES CCD record →
Teachers (FTE)
40.0
Federal CCD staff survey
Students per teacher
18.5:1
vs 14.7:1 Texas avg
+26% vs state
Free-lunch eligible
67.7%
vs 61.9% Texas avg
+9% vs state
Student-teacher ratio in context
How Sinclair El compares with Texas and U.S. medians
What stands out at Sinclair El
Sinclair El is a higher-need, mid-sized combined-grade school in San Antonio, Texas, enrolling 739 students.
Class loads run heavy: 18.5:1 is larger than about 88% of Texas schools and 26% above the 14.7:1 state mean, so each teacher carries more students than is typical.
Its free-meal eligibility rate of 67.7% lands close to the Texas typical range, neither a high- nor low-need campus by this measure.
Enrollment of 739 puts it in the larger third of Texas schools by headcount.
Its Resource Investment Index lands in the lower third of 8,960 scored Texas schools.
Among 1,616 similarly sized, similarly resourced-need Texas schools statewide, it ranks #1,354, in the lower tier once campus size and economic need are matched.
Its student body is led by Hispanic or Latino (70%) and African American (17%) (diversity index 47/100).
Counselor access is stretched at roughly 739 students per counselor, well above the ASCA-recommended 250:1 ceiling.
Chronic absenteeism is elevated: 27.5% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
The surrounding East Central Isd spends $10,197 per pupil, 25% below the Texas average, a leaner-resourced district than most.
Its district draws 20.2% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
East Central Isd also operates East Central H S (3,362 students) and East Central Heritage Middle (1,251 students) alongside Sinclair 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 Sinclair El compares
Sinclair 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 | 18.5:1 | ▲ 26% | 14.7:1 | 15.7:1 |
| Free-lunch eligible | 67.7% | ▲ 9% | 61.9% | 51.7% |
| Enrollment | 739 | top 23% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
18.5:1
Leaner classes than 22% of US schools, heavier class loads than most.
739
Bigger than 82% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Economic need
67.7%
free-lunch eligible
- 9% above the Texas average of 61.9%
Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.
Staffing depth
18.5:1
students per teacher
- 26% above state mean
Top 88% in Texas - lower ratio than 12% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
27.5%
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
$10,197
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
Counselors1.0 FTE
Per 739 students, the combined health-and-guidance staffing load for this school.
Discipline context
27
in-school suspensions + 1 out-of-school
Suspension rate: 3.7 per 100 students. Combined in-school and out-of-school rate: 3.8 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 70.1%
African American 17.1%
White 8.8%
Two or More 2.7%
American Indian / Alaska Native 0.7%
Native Hawaiian / Pacific Islander 0.7%
Largest group: Hispanic or Latino at 70.1% of enrollment.
Student-body diversity index 47.1/100
Simpson diversity index - at 47.1, Sinclair El is more mixed than the Texas school average of 44.7.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for East Central Isd, which includes Sinclair El.
$10,197
Per student
-25%
vs Texas
Avg $13,644
-39%
vs U.S.
Avg $16,593
Revenue mix
Local 45.0%
State 34.9%
Federal 20.2%
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 Sinclair El Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| East Central H S | Larger | Lower economic need | Similar S:T ratio |
| East Central Heritage Middle | Larger | Lower economic need | Higher S:T ratio |
| Legacy Middle | Larger | Lower economic need | Similar S:T ratio |
| Harmony El | Similar size | Similar economic need | Higher S:T ratio |
| Highland Forest El | Similar size | Higher economic need | Similar S:T ratio |
Comparisons are relative to Sinclair El's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 3,362
- Students per teacher
- 18.3:1
- Resource Index
- 34/100
- Enrollment
- 1,251
- Students per teacher
- 20.9:1
- Resource Index
- 23/100
- Enrollment
- 1,143
- Students per teacher
- 17.3:1
- Resource Index
- 28/100
- Enrollment
- 781
- Students per teacher
- 20:1
- Resource Index
- 31/100
- Enrollment
- 694
- Students per teacher
- 19.3:1
- Resource Index
- 33/100
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 (~739 students)
Similar student-teacher ratio (~18.5:1)
Next steps
Verify locally before acting on Sinclair El's federal record.
- Compare Sinclair El against another school. Compare schools
- East Central 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 Sinclair El
How many students attend Sinclair El?
Sinclair El has 739 students enrolled. It is a public school in San Antonio, TX.
What is the student-teacher ratio at Sinclair El?
The student-teacher ratio at Sinclair El is 18.5:1, which is 26% higher than the Texas average of 14.7:1 and 18% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Sinclair El?
67.7% of students at Sinclair El are eligible for free lunch, compared to the Texas average of 61.9%.
What is the racial and ethnic makeup of Sinclair El?
The largest demographic group at Sinclair El is Hispanic or Latino at 70.1% of enrollment, in San Antonio, TX.
What is the Resource Investment Index for Sinclair El?
Sinclair El has a Resource Investment Index of 32/100 (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 Sinclair El rank among schools in San Antonio?
By Resource Investment Index, Sinclair El ranks #242 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 Sinclair El a good school?
Sinclair El earns 32/100 on the Resource Investment Index, with class sizes larger than 88% of 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 East Central Isd?
Besides Sinclair El, East Central Isd also operates East Central H S (3,362 students), East Central Heritage Middle (1,251 students), and Legacy Middle (1,143 students). See the East Central 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.