1
What clubs or activities at BRENNAN H S are worth joining?
Community prompt from u/allk12. Replies below.
Enrollment
2,965
High
DISTRICT 1,907 · STATE 796
SCHOOL COMMUNITY·NORTHSIDE ISD·NCES 483312012347
Brennan High School
2400 COTTONWOOD WAY, SAN ANTONIO, TX 78253 · (210) 398-1250 · Bexar County
GRADES 09–12HIGH21-SUBURBREGULAR SCHOOL2,965 STUDENTS
B-
allk12 Grade
Scored higher than 52% 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.
- C+Beats expectations How far test scores land above or below what the share of low-income students predicts for a school in this state.
- B-Three-year trend Change in reading and math proficiency over the last three test years.
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
17.0:1
174 FTE teachers
DISTRICT 14.9:1 · STATE 15.1:1
Free / Reduced Lunch
34%
997 students
DISTRICT 54% · STATE 65%
Community
1
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 | 712 | 24% |
| Grade 10 | 769 | 26% |
| Grade 11 | 722 | 24% |
| Grade 12 | 762 | 26% |
Student demographics
56%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 50% · 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
Test scores
STAAR 2025-26 . % Meets Grade Level or AboveReading
66.0%
TX avg 54.5% . +23.0pp since 2020
Mathematics
28.0%
TX avg 45.3% . +13.0pp since 2020
What this means: On the STAAR, Texas's statewide test, about 66 of every 100 students at this school read at grade level and about 28 of 100 do math at grade level. Across all Texas schools, those numbers are about 55 and 45. Reading scores are up about 23 points since 2020, while math scores are up about 13 points.
Performance levels, 2025-26
| Subject | Masters Grade Level | Meets Grade Level | Approaches Grade Level | Did Not Meet Grade Level |
|---|---|---|---|---|
| Reading | 8.0% | 58.0% | 19.0% | 15.0% |
| Mathematics | 6.0% | 22.0% | 45.0% | 27.0% |
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 | 66.0% | 28.0% |
| 2024-25 | 65.0% | 27.0% |
| 2023-24 | 65.0% | 31.0% |
| 2022-23 | 50.0% | 14.0% |
| 2021-22 | 41.0% | 28.0% |
| 2020-21 | 43.0% | 15.0% |
% 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
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
61.1%
composite math + reading, all grades
Predicted
59.3%
based on TX schools with similar FRL share
Beats by
+1.8pp
above demographic expectation
What this means: About 61% of students here test proficient in math and reading, compared with the roughly 59% typical for Texas schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among Texas's top nor bottom 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 Brennan High School
Brennan High School's state test result (61.1% proficient) is higher than 2 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Brennan High School this school | 2,965 | 33.6% | 61.1% |
| Taft High School SAN ANTONIO | 2,670 | 33.2% | 59.6% |
| Sotomayor High School SAN ANTONIO | 2,627 | 30.6% | 65.3% |
| Harlan High School SAN ANTONIO | 2,778 | 28.6% | 67.4% |
| Hutto High School HUTTO | 2,313 | 37.5% | 38.3% |
| Clark High School SAN ANTONIO | 2,750 | 33.6% | 66.0% |
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 Brennan High School ranks
Among high schools| Measure | This school | In Texas | In Bexar County |
|---|---|---|---|
| State test proficiency ranked highest first | 61.1% | #455 of 1,385 | #25 of 81 |
| Math proficiency ranked highest first | 28.0% | #1,149 of 1,425 ▼ 78 | #55 of 82 ▼ 1 |
| Reading proficiency ranked highest first | 66.0% | #456 of 1,425 ▼ 17 | #26 of 82 no change |
| 3-year test score change ranked biggest gain first | +15.0pp | #613 of 1,184 | #31 of 75 |
| Enrollment ranked largest first | 2,965 | #85 of 2,107 | #4 of 128 |
| Students per teacher ranked fewest first | 17.0:1 | #1,068 of 1,344 | #60 of 78 |
| Diversity index ranked most diverse first | 56.0% | #471 of 1,346 | #19 of 79 |
| Free and reduced lunch ranked highest share first | 33.6% | #1,310 of 1,522 | #74 of 90 |
| Enrollment change since 2017-18 ranked fastest growth first | +11.9% | #334 of 672 | #19 of 32 |
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
2,965
+201 (+7%) vs 2020
+125% since 2010-11, when it was 1,317
Student : Teacher
17.0:1
was 17.8:1
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 | 2,965 | 174.3 | 17.0:1 | 34% (997) |
| 2023-24 | 3,052 | 176.7 | 17.3:1 | 37% (1,123) |
| 2022-23 | 3,142 | 175.8 | 17.9:1 | 39% (1,226) |
| 2020-21 | 2,764 | 155 | 17.8:1 | 31% (854) |
| 2017-18 | 2,649 | 150.5 | 17.6:1 | 30% (800) |
| 2015-16 | 2,698 | 152 | 17.8:1 | 31% (834) |
| 2010-11 | 1,317 | 87 | 15.1:1 | 37% (489) |
Source: NCES Common Core of Data. Rows are the federal collections on file for Brennan High School.
Since 2017-18: students up 12% (2,649 to 2,965); teachers up 16% (150.5 to 174.3).
About Brennan High School
Brennan High School is listed by the National Center for Education Statistics as a high school in SAN ANTONIO, Texas. A federal count lists 2,965 students at the school, in grades 9 through 12. An average school in this group (high schools in Texas) has about 796 students.
Brennan High School is run by NORTHSIDE ISD, whose 127 schools enroll 100,208 students.
At 63%, Hispanic students outnumber all other groups at Brennan High School combined. The remaining students are 15% White, 14% Black, 5% multiracial, and 3% Asian. The county population is about 60% Hispanic, within a few points of the school. By the diversity index, Brennan High School comes in at 56%.
The school's student-to-teacher ratio is about 17.0:1, with 174.3 full-time-equivalent teachers. Among high schools in Texas, the typical ratio is 15.1:1. Lunch subsidy eligibility at Brennan High School is 34%. That is lower than the 63% average for public schools in Bexar County.
Measured against Texas public high schools, Brennan High School receives a B-. The grade weighs proficiency most heavily, then how results compare with what the school's low-income share predicts, then the three-year change.
Test results at Brennan High School are 1.8 points above what its free or reduced-price lunch share predicts (61.1% actual, 59.3% predicted).
Among Bexar County residents, median household income is about $72,341, about 32% of adults have at least a bachelor's degree, and roughly 11% of residents are in poverty. Brennan High School is one of 638 public schools in Bexar County, which together enroll about 368,487 students.
The closest public school, Harmony School of Science- San Antonio, is about 0.5 miles from Brennan High School. Within five miles are at least 8 other public schools. On average proficiency, Brennan High School is 1st of 7 nearby schools with test data.
The National Center for Education Statistics classifies the school's location as Suburb: Large, meaning it is in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more.
The student count in 2024-25 was 2,965, 7% above the 2,764 of 2020-21.
Conversations here can range across science fairs, picture day, and bus routes. Posting is open to anyone connected to the school.
Bexar County at a glance
View full county profilePopulation
2,067,341
Census ACS
Median income
$72,341
Household, ACS
Bachelor's+
32%
Adults 25+
Poverty rate
11%
Below federal line
Schools in county
638
368,487 students
Quick facts
Related schools
Other schools in NORTHSIDE ISD
- Harlan High SchoolHigh · 2,778 students
- Clark High SchoolHigh · 2,750 students
- Taft High SchoolHigh · 2,670 students
- Brandeis High SchoolHigh · 2,657 students
- Marshall High SchoolHigh · 2,634 students
- Sotomayor High SchoolHigh · 2,627 students
Other schools in SAN ANTONIO
- Reagan High SchoolHigh · 3,403 students
- East Central High SchoolHigh · 3,362 students
- Johnson High SchoolHigh · 3,196 students
- Harlan High SchoolHigh · 2,778 students
- Clark High SchoolHigh · 2,750 students
- Taft High SchoolHigh · 2,670 students
Nearby schools
- Harmony School of Science- San Antonio0.5 mi · 602
- Briscoe Middle School1.1 mi · 1,263
- Galm Elementary School1.1 mi · 541
- Hoffmann Elementary School1.3 mi · 754
- Basis San Antonio Pri - Jack Lewis Jr Campus1.4 mi · 605
- Basis San Antonio - Jack Lewis Jr Campus1.4 mi · 181
Frequently asked questions
About Brennan High SchoolHow many students attend Brennan High School?
Brennan High School enrolls approximately 2,965 students in grades 09-12.
What grades does Brennan High School serve?
Brennan High School serves grades 09-12.
How many teachers does Brennan High School have?
Brennan High School employs 174 FTE teachers, for a student-to-teacher ratio of 17.0:1.
What is the racial breakdown of students at Brennan High School?
At Brennan High School, the student body is approximately 15% White, 63% Hispanic, 14% Black, 3% Asian, 5% Two or more.
Is Brennan High School public or private?
Brennan High School is a public K-12 school, overseen by NORTHSIDE ISD.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.