Enrollment
651
Texas · 2024-25 NCES data
Other / mixed grade configuration · San Antonio, TX
Charles Graebner El
Federal NCES profile for Charles Graebner El, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 35/100.
2024-25 NCES dataOther / mixed grade configurationNCES 483873004334Charter school
👥 S:T ratio 33
🌟 Gifted program 70
🎓 Counselors 35
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Charles Graebner El earns 35/100 on the Resource Investment Index, with class sizes larger than 77% of Texas schools. It is also less racially and ethnically mixed than most Texas schools.
- #207 of 327
- schools in San Antonio · Resource Index
- 35
- Resource Index · Typical
- 16.7:1
- large classes for Texas
- 91.8%
- free-lunch eligible
Charles Graebner El has class sizes larger than 77% of Texas schools. Computed live against every Texas school reporting to NCES.
By Resource Investment Index, Charles Graebner El ranks #207 of 327 schools in San Antonio, TX.
School address
District: San Antonio Isd · Texas
NCES ID 483873004334 Verify on NCES CCD record →
Teachers (FTE)
39.0
Federal CCD staff survey
Students per teacher
16.7:1
vs 14.7:1 Texas avg
+14% vs state
Free-lunch eligible
91.8%
vs 61.9% Texas avg
+48% vs state
Student-teacher ratio in context
How Charles Graebner El compares with Texas and U.S. medians
What stands out at Charles Graebner El
Charles Graebner El is a high-poverty, mid-sized charter combined-grade school in San Antonio, Texas, enrolling 651 students.
Class loads run somewhat heavier than typical: 16.7:1 puts it in the larger third of Texas schools by student-teacher ratio.
Economic need is high: 91.8% of students qualify for free meals, 48% above the Texas average, a Title I-weighted population that federal funding formulas prioritise.
Enrollment of 651 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.
Against 1,713 statewide peers matched on enrollment and economic need, it ranks mid-pack at #1,004.
Its student body is predominantly Hispanic or Latino (96% of enrollment), among the less diverse in the state (diversity index 8/100).
Counselor availability sits well past the ASCA benchmark, roughly 326 students sharing each counselor, though short of the most stretched campuses.
Chronic absenteeism is elevated: 45.6% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Its district draws 27.0% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
San Antonio Isd also operates Jefferson H S (1,706 students) and Lanier H S (1,620 students) alongside Charles Graebner 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 Charles Graebner El compares
Charles Graebner 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 | 16.7:1 | ▲ 14% | 14.7:1 | 15.7:1 |
| Free-lunch eligible | 91.8% | ▲ 48% | 61.9% | 51.7% |
| Enrollment | 651 | top 32% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
16.7:1
Leaner classes than 33% of US schools, heavier class loads than most.
651
Bigger than 77% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
91.8%
free-lunch eligible
- 48% 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
16.7:1
students per teacher
- 14% above state mean
Top 77% in Texas - lower ratio than 23% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
45.6%
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
$13,912
per pupil, district-wide
- above Texas avg of $13,644
Somewhat below the U.S. average per-pupil spend; funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors2.0 FTE
Per 326 students, the combined health-and-guidance staffing load for this school.
Discipline context
6
in-school suspensions + 21 out-of-school
Suspension rate: 0.9 per 100 students. Combined in-school and out-of-school rate: 4.1 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 96.0%
White 2.6%
African American 0.8%
Asian 0.3%
American Indian / Alaska Native 0.3%
Largest group: Hispanic or Latino at 96.0% of enrollment.
Student-body diversity index 7.8/100
Simpson diversity index - at 7.8, Charles Graebner El is less mixed than the Texas school average of 44.7.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for San Antonio Isd, which includes Charles Graebner El.
$13,912
Per student
+2%
vs Texas
Avg $13,644
-16%
vs U.S.
Avg $16,593
Revenue mix
Local 42.8%
State 30.1%
Federal 27.0%
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 Charles Graebner El Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Jefferson H S | Larger | Similar economic need | Lower S:T ratio |
| Lanier H S | Larger | Similar economic need | Similar S:T ratio |
| Brackenridge H S | Larger | Similar economic need | Similar S:T ratio |
| Highlands H S | Larger | Similar economic need | Lower S:T ratio |
| Burbank H S | Larger | Similar economic need | Similar S:T ratio |
Comparisons are relative to Charles Graebner El's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,706
- Students per teacher
- 14.6:1
- Resource Index
- 48/100
- Enrollment
- 1,620
- Students per teacher
- 16.9:1
- Resource Index
- 46/100
- Enrollment
- 1,593
- Students per teacher
- 15.6:1
- Resource Index
- 36/100
- Enrollment
- 1,478
- Students per teacher
- 13.6:1
- Resource Index
- 52/100
- Enrollment
- 1,405
- Students per teacher
- 15.4:1
- Resource Index
- 35/100
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 (~651 students)
Next steps
Verify locally before acting on Charles Graebner El's federal record.
- Compare Charles Graebner El against another school. Compare schools
- San Antonio 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 Charles Graebner El
How many students attend Charles Graebner El?
Charles Graebner El has 651 students enrolled. It is a public school in San Antonio, TX.
What is the student-teacher ratio at Charles Graebner El?
The student-teacher ratio at Charles Graebner El is 16.7:1, which is 14% higher than the Texas average of 14.7:1 and 6% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Charles Graebner El?
91.8% of students at Charles Graebner El are eligible for free lunch, compared to the Texas average of 61.9%.
What is the racial and ethnic makeup of Charles Graebner El?
The largest demographic group at Charles Graebner El is Hispanic or Latino at 96.0% of enrollment, in San Antonio, TX.
What is the Resource Investment Index for Charles Graebner El?
Charles Graebner El has a Resource Investment Index of 35/100 (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 Charles Graebner El rank among schools in San Antonio?
By Resource Investment Index, Charles Graebner El ranks #207 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 Charles Graebner El a good school?
Charles Graebner El earns 35/100 on the Resource Investment Index, with class sizes larger than 77% 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 San Antonio Isd?
Besides Charles Graebner El, San Antonio Isd also operates Jefferson H S (1,706 students), Lanier H S (1,620 students), and Brackenridge H S (1,593 students). See the San Antonio 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.