Enrollment
110
Texas · 2024-25 NCES data
Other / mixed grade configuration · Robstown, TX
Petronila El
Federal NCES profile for Petronila El, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 60/100.
2024-25 NCES dataOther / mixed grade configurationNCES 481026000510
👥 S:T ratio 45
🌟 Gifted program 70
🎓 Counselors 56
📋 Attendance 68
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Petronila El earns 60/100 on the Resource Investment Index, with class sizes near the Texas median.
- #1 of 4
- schools in Robstown · Resource Index
- 60
- Resource Index · Higher
- 13.8:1
- students per teacher
- 66.3%
- free-lunch eligible
Petronila El has class sizes near the Texas median. Computed live against every Texas school reporting to NCES.
By Resource Investment Index, Petronila El ranks #1 of 4 schools in Robstown, TX.
School address
Teachers (FTE)
8.0
Federal CCD staff survey
Students per teacher
13.8:1
vs 14.7:1 Texas avg
-6% vs state
Free-lunch eligible
66.3%
vs 61.9% Texas avg
+7% vs state
Student-teacher ratio in context
How Petronila El compares with Texas and U.S. medians
What stands out at Petronila El
Petronila El is a higher-need, small combined-grade school in Robstown, Texas, enrolling 110 students.
At 13.8:1, its student-teacher ratio sits close to the Texas median, within a few percentage points of the 14.7:1 state norm, neither notably crowded nor notably small.
Its free-meal eligibility rate of 66.3% lands close to the Texas typical range, neither a high- nor low-need campus by this measure.
This is a small campus: fewer students than 91% of Texas schools, with 110 enrolled.
Its Resource Investment Index outscores 92% of the 8,960 Texas schools with a score on record, a top-tier result on this measure.
Against 253 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #86.
Its student body is predominantly Hispanic or Latino (82% of enrollment) (diversity index 30/100).
Counselor coverage is strong, about 220 students per counselor, inside the American School Counselor Association's recommended 250:1.
12.7% of students were chronically absent in the 2021-22 collection, in line with the post-pandemic national range.
Its district draws 18.8% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
Bishop Cisd also operates Bishop H S (533 students) and Lillion E Luehrs J H (330 students) alongside Petronila 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 Petronila El compares
Petronila 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 | 13.8:1 | ▼ 6% | 14.7:1 | 15.7:1 |
| Free-lunch eligible | 66.3% | ▲ 7% | 61.9% | 51.7% |
| Enrollment | 110 | top 91% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
13.8:1
Leaner classes than 59% of US schools, a middle-of-the-pack class size.
110
Bigger than 11% of US schools by enrollment, a small campus.
Equity indicators (what these measure)
Economic need
66.3%
free-lunch eligible
- 7% 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
13.8:1
students per teacher
- 6% below state mean
Top 45% in Texas - lower ratio than 55% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
12.7%
chronically absent (missed 10%+ of school days)
In the 10-15% range, above the pre-pandemic national baseline but within the broader post-pandemic picture.
Funding equity
$13,866
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
Counselors0.5 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
3
in-school suspensions + 0 out-of-school
Suspension rate: 2.7 per 100 students. Combined in-school and out-of-school rate: 2.7 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 81.8%
White 17.3%
Two or More 0.9%
Largest group: Hispanic or Latino at 81.8% of enrollment.
Student-body diversity index 30.1/100
Simpson diversity index - at 30.1, Petronila El is less mixed than the Texas school average of 44.7.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Bishop Cisd, which includes Petronila El.
$13,866
Per student
+2%
vs Texas
Avg $13,644
-16%
vs U.S.
Avg $16,593
Revenue mix
Local 47.1%
State 34.0%
Federal 18.8%
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 Petronila El Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Bishop H S | Larger | Similar economic need | Similar S:T ratio |
| Lillion E Luehrs J H | Larger | Similar economic need | Similar S:T ratio |
| Bishop Pri | Larger | Similar economic need | Similar S:T ratio |
| Bishop El | Larger | Similar economic need | Higher S:T ratio |
Comparisons are relative to Petronila El's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 533
- Students per teacher
- 13:1
- Resource Index
- 46/100
- Enrollment
- 330
- Students per teacher
- 13.2:1
- Resource Index
- 53/100
- Enrollment
- 258
- Students per teacher
- 15.2:1
- Resource Index
- 47/100
- Enrollment
- 232
- Students per teacher
- 15.5:1
- Resource Index
- 51/100
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 (~110 students)
Similar student-teacher ratio (~13.8:1)
Next steps
Verify locally before acting on Petronila El's federal record.
- Compare Petronila El against another school. Compare schools
- Bishop Cisd'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 Petronila El
How many students attend Petronila El?
Petronila El has 110 students enrolled. It is a public school in Robstown, TX.
What is the student-teacher ratio at Petronila El?
The student-teacher ratio at Petronila El is 13.8:1, which is 6% lower than the Texas average of 14.7:1 and 12% 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 Petronila El?
66.3% of students at Petronila El are eligible for free lunch, compared to the Texas average of 61.9%.
What is the racial and ethnic makeup of Petronila El?
The largest demographic group at Petronila El is Hispanic or Latino at 81.8% of enrollment, in Robstown, TX.
What is the Resource Investment Index for Petronila El?
Petronila El has a Resource Investment Index of 60/100 (higher 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 Petronila El rank among schools in Robstown?
By Resource Investment Index, Petronila El ranks #1 of 4 schools in Robstown, TX. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all schools in Robstown on the city page.
Is Petronila El a good school?
Petronila El earns 60/100 on the Resource Investment Index, with class sizes near the Texas median. 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 Bishop Cisd?
Besides Petronila El, Bishop Cisd also operates Bishop H S (533 students), Lillion E Luehrs J H (330 students), and Bishop Pri (258 students). See the Bishop Cisd 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.