Enrollment
62
High
DISTRICT 77 · STATE 796
SCHOOL COMMUNITY·SAN ISIDRO ISD·NCES 483891004447
San Isidro High School
5175 FM 1017, SAN ISIDRO, TX 78588 · (956) 481-3110 · Starr County
GRADES 09–12HIGH42-RURALTITLE IREGULAR SCHOOL62 STUDENTS
B+
allk12 Grade
Scored higher than 68% of Texas public high schools
- B-Test scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
- ABeats expectations How far test scores land above or below what the share of low-income students predicts for a school in this state.
- ·Three-year trend Not available for this school, so the grade uses the other parts.
Grades compare a school only with schools in the same state, because every state gives its own test. How grades work · Top-graded Texas public high schools
Student : Teacher
8.8:1
7 FTE teachers
DISTRICT 8.7:1 · STATE 15.1:1
Free / Reduced Lunch
100%
62 students
DISTRICT 98% · STATE 65%
Community
0
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Grade 9 | 14 | 23% |
| Grade 10 | 15 | 24% |
| Grade 11 | 13 | 21% |
| Grade 12 | 20 | 32% |
Student demographics
6%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 5% · STATE 63% · US 70%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
School pathway
Feeds from
Based on grade levels within SAN ISIDRO ISD. Attendance zones can vary; confirm enrollment with the district.
Test scores
STAAR 2025-26 . % Meets Grade Level or AboveReading
86.0%
TX avg 54.5% . +86.0pp since 2021
Mathematics
14.0%
TX avg 45.3%
What this means: On the STAAR, Texas's statewide test, about 86 of every 100 students at this school read at grade level and about 14 of 100 do math at grade level. Across all Texas schools, those numbers are about 55 and 45. Reading scores are up about 86 points since 2021.
Performance levels, 2025-26
| Subject | Masters Grade Level | Meets Grade Level | Approaches Grade Level | Did Not Meet Grade Level |
|---|---|---|---|---|
| Reading | 24.0% | 62.0% | 9.0% | 5.0% |
| Mathematics | 0.0% | 14.0% | 72.0% | 14.0% |
Share of tested students at each STAAR level. Each student counts in one level, so a row adds to about 100%.
STAAR results by year
| School year | Reading | Mathematics |
|---|---|---|
| 2025-26 | 86.0% | 14.0% |
| 2024-25 | 76.0% | 22.0% |
| 2023-24 | 74.0% | 15.0% |
| 2022-23 | 0.0% | N/A |
| 2021-22 | 0.0% | N/A |
% Meets Grade Level or Above, all students and all tested grades.
Source: STAAR. All students, all grades. See all years and grades →
BeatsExpectations
Demographically-adjusted score · methodologyTier
OUTPERFORMING
Top 10% of TX schools after controlling for student poverty
Actual proficiency
54.4%
composite math + reading, all grades
Predicted
31.0%
based on TX schools with similar FRL share
Beats by
+23.4pp
above demographic expectation
What this means: About 54% of students here test proficient in math and reading, well above the roughly 31% typical for Texas schools with a similar share of low-income students. BeatsExpectations ranks schools against others at the same poverty level, not by raw scores, so a school can post high scores and still fall short of its prediction, or post lower scores and still beat it. This school clears its prediction by about 23 points, placing it in Texas's top 10%.
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →
Schools most like San Isidro High School
San Isidro High School's state test result (54.4% proficient) is higher than 5 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| San Isidro High School this school | 62 | 100.0% | 54.4% |
| Benavides Secondary BENAVIDES | 87 | 89.7% | 38.7% |
| Santa Maria High School SANTA MARIA | 165 | 97.6% | 37.7% |
| Ser-Ninos Charter High HOUSTON | 169 | 95.9% | 53.3% |
| Bruni High School BRUNI | 80 | 87.5% | 49.1% |
| Fort Hancock High School FORT HANCOCK | 163 | 91.4% | 37.4% |
Matched among Texas high schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.
Where San Isidro High School ranks
Among high schools| Measure | This school | In Texas | In Starr County |
|---|---|---|---|
| Enrollment ranked largest first | 62 | #1,700 of 2,107 | #6 of 7 |
Ranked against other public high schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.
4-year change
SY 2020-21 vs SY 2024-25Enrollment
62
-8 (-11%) vs 2020
-44% since 1990-91, when it was 110
Student : Teacher
8.8:1
was 10.0:1
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 62 | 7.1 | 8.8:1 | 100% (62) |
| 2023-24 | 67 | 7.2 | 9.3:1 | 96% (64) |
| 2022-23 | 75 | 7.3 | 10.3:1 | 96% (72) |
| 2020-21 | 70 | 7 | 10.0:1 | 96% (67) |
| 2017-18 | 75 | 10.8 | 6.9:1 | 80% (60) |
| 2015-16 | 85 | 9 | 9.4:1 | 84% (71) |
| 2010-11 | 97 | 10 | 9.7:1 | 74% (72) |
| 2000-01 | 86 | 10 | 8.6:1 | 78% (67) |
| 1990-91 | 110 | 12 | 9.2:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for San Isidro High School.
Since 2017-18: students down 17% (75 to 62); teachers down 35% (10.8 to 7.1).
About San Isidro High School
San Isidro High School is one of the public schools in SAN ISIDRO, Texas. It is a small high school. The school serves 62 students in grades 9 through 12 in 2024-25. For comparison, high schools in Texas average about 796 students.
SAN ISIDRO ISD runs 2 schools with a combined 153 students. San Isidro High School is one of them.
Most students at San Isidro High School are Hispanic: 97% of enrollment. Smaller groups are 3% White. For comparison, Starr County is about 97% Hispanic. San Isidro High School has a diversity index of 6%, compared with 70% for all US public school students.
Its teaching staff equals 7.1 full-time positions, a ratio of 8.8:1. That ratio is under the 15.1:1 average for high schools in Texas. Around 100% of the school's students qualify for free or reduced-price meals.
The allk12 Grade for San Isidro High School is B+. Compared with Texas public high schools, the school scored higher than 68% on a mix of test scores, poverty-adjusted results, and recent trend.
San Isidro High School posts an average proficiency rate on state tests of 54.4%. Schools with its free or reduced-price lunch share in Texas are predicted to post 31.0%, so the school is 23.4 points ahead and in the state's top 10%.
Recent Census Bureau figures for Starr County show that median household income is about $37,639, 14% of adults hold a bachelor's degree or higher, and about 31% of residents live below the federal poverty line. Federal data list 29 public schools in Starr County, with a combined enrollment of about 16,900.
The closest public school to San Isidro High School is San Isidro Elementary School, less than a tenth of a mile away. Its average proficiency rate of 54.4% is above the 36.3% average for nearby schools.
Federal records code the school's setting as Rural: Distant.
San Isidro High School saw enrollment fall 11% between 2020-21 and 2024-25. The ratio was 10.0:1 in 2020-21 and 8.8:1 in 2024-25.
To ask about school safety, transportation, and start times, start a discussion on this page. Posting is open to anyone connected to the school.
Starr County at a glance
View full county profilePopulation
66,067
Census ACS
Median income
$37,639
Household, ACS
Bachelor's+
14%
Adults 25+
Poverty rate
31%
Below federal line
Schools in county
29
16,900 students
Quick facts
Related schools
Other schools in SAN ISIDRO ISD
- San Isidro Elementary SchoolElementary · 91 students
Nearby schools
- San Isidro Elementary School0.0 mi · 91
- Brewster Elementary School22.6 mi · 332
- William J Clinton Elementary School26.1 mi · 463
- Dr Javier Saenz Middle School26.3 mi · 601
- Evangelina Garza Elementary School26.9 mi · 384
- Juan Seguin Elementary School27.0 mi · 569
Frequently asked questions
About San Isidro High SchoolHow large is San Isidro High School?
San Isidro High School enrolls approximately 62 students in grades 09-12.
What grades does San Isidro High School serve?
San Isidro High School serves grades 09-12.
How many teachers does San Isidro High School have?
San Isidro High School employs 7 FTE teachers, for a student-to-teacher ratio of 8.8:1.
What is the student diversity at San Isidro High School?
Student demographics at San Isidro High School are roughly 3% White, 97% Hispanic.
Who oversees San Isidro High School?
San Isidro High School is overseen by SAN ISIDRO ISD in Starr County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.