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What do students at CAST TECH H S actually talk about outside of class?
Community prompt from u/allk12. Replies below.
Enrollment
451
High
DISTRICT 699 · STATE 796
SCHOOL COMMUNITY·SAN ANTONIO ISD·NCES 483873013665
Cast Tech High School
637 N MAIN, SAN ANTONIO, TX 78205 · (210) 554-2700 · Bexar County
GRADES 09–12HIGH11-CITYCHARTERTITLE IREGULAR SCHOOL451 STUDENTS
Student : Teacher
14.9:1
30 FTE teachers
DISTRICT 14.0:1 · STATE 15.1:1
Free / Reduced Lunch
64%
289 students
DISTRICT 88% · 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 | 91 | 20% |
| Grade 10 | 126 | 28% |
| Grade 11 | 116 | 26% |
| Grade 12 | 118 | 26% |
Student demographics
20%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 19% · 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
65.0%
TX avg 54.5% . +22.0pp since 2020
Mathematics
45.0%
TX avg 45.3% . +7.0pp since 2020
What this means: On the STAAR, Texas's statewide test, about 65 of every 100 students at this school read at grade level and about 45 of 100 do math at grade level. Across all Texas schools, those numbers are about 55 and 45. Reading scores are up about 22 points since 2020, while math scores are up about 7 points.
Performance levels, 2025-26
| Subject | Masters Grade Level | Meets Grade Level | Approaches Grade Level | Did Not Meet Grade Level |
|---|---|---|---|---|
| Reading | 8.0% | 57.0% | 18.0% | 17.0% |
| Mathematics | 5.0% | 40.0% | 40.0% | 15.0% |
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 | 65.0% | 45.0% |
| 2024-25 | 67.0% | 46.0% |
| 2023-24 | 68.0% | 29.0% |
| 2022-23 | 56.0% | 22.0% |
| 2021-22 | 52.0% | 12.0% |
| 2020-21 | 43.0% | 38.0% |
% 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
OUTPERFORMING
Top 10% of TX schools after controlling for student poverty
Actual proficiency
62.4%
composite math + reading, all grades
Predicted
46.3%
based on TX schools with similar FRL share
Beats by
+16.1pp
above demographic expectation
What this means: About 62% of students here test proficient in math and reading, well above the roughly 46% 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 16 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 Cast Tech High School
Cast Tech High School's state test result (62.4% proficient) is higher than 1 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Cast Tech High School this school | 451 | 64.1% | 62.4% |
| Mission Early College High School EL PASO | 410 | 65.9% | 76.4% |
| Sharyland Advanced Academic Academy MISSION | 481 | 66.1% | 81.8% |
| Lyford High School LYFORD | 439 | 62.9% | 37.7% |
| Odessa Career and Technical Early College High School ODESSA | 418 | 66.3% | 68.8% |
| Silva Health Magnet EL PASO | 544 | 66.0% | 82.6% |
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 Cast Tech High School ranks
Among high schools| Measure | This school | In Texas | In Bexar County |
|---|---|---|---|
| State test proficiency ranked highest first | 62.4% | #425 of 1,385 | #24 of 81 |
| Math proficiency ranked highest first | 45.0% | #685 of 1,425 ▼ 130 | #28 of 82 ▼ 4 |
| Reading proficiency ranked highest first | 65.0% | #492 of 1,425 ▼ 94 | #29 of 82 ▼ 4 |
| 3-year test score change ranked biggest gain first | +16.0pp | #575 of 1,184 | #29 of 75 |
| Enrollment ranked largest first | 451 | #961 of 2,107 | #67 of 128 |
| Students per teacher ranked fewest first | 14.9:1 | #715 of 1,344 | #25 of 78 |
| Diversity index ranked most diverse first | 20.4% | #1,101 of 1,346 | #53 of 79 |
| Free and reduced lunch ranked highest share first | 64.1% | #714 of 1,522 | #56 of 90 |
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
451
-41 (-8%) vs 2020
Student : Teacher
14.9:1
was 19.7:1
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 | 451 | 30.3 | 14.9:1 | 64% (289) |
| 2023-24 | 506 | 31 | 16.3:1 | 64% (324) |
| 2022-23 | 457 | 30.3 | 15.1:1 | 62% (282) |
| 2020-21 | 492 | 25 | 19.7:1 | 57% (278) |
| 2017-18 | 147 | 8 | 18.4:1 | 67% (98) |
Source: NCES Common Core of Data. Rows are the federal collections on file for Cast Tech High School.
Since 2017-18: students up 207% (147 to 451); teachers up 279% (8 to 30.3).
About Cast Tech High School
Cast Tech High School is a public high school run by SAN ANTONIO ISD in SAN ANTONIO, Texas. It serves 451 students in grades 9 through 12. For comparison, high schools in Texas average about 796 students.
Cast Tech High School belongs to SAN ANTONIO ISD, a district of 100 schools and 47,623 students.
Federal enrollment data show Cast Tech High School is 89% Hispanic. The school is also 6% White and 3% Black. The Hispanic share of the county population is lower, at 60%. The school's diversity index is 20%, meaning two students picked at random have a 20% chance of belonging to different racial or ethnic groups.
The teaching staff at Cast Tech High School is 30.3 full-time-equivalent teachers, and the ratio is 14.9:1. That matches the 15.1:1 average for high schools in Texas fairly closely. The percentage of students eligible for free or reduced-price lunch is 64%. For comparison, public schools in Bexar County average 63%.
Cast Tech High School posts an average proficiency rate on state tests of 62.4%. Schools with its free or reduced-price lunch share in Texas are predicted to post 46.3%, so the school is 16.1 points ahead and in the state's top 10%.
Bexar County census figures show that the median household income is $72,341, 32% of adults hold a bachelor's degree or higher, and about 11% of people live in poverty. There are 638 public schools in Bexar County, enrolling about 368,487 students in all.
Fox Technical High School is the public school closest to Cast Tech High School, less than a tenth of a mile away. There are at least 8 other public schools within five miles. Ranking the closest schools with test data puts Cast Tech High School at 1st of 4.
The school's locale code, City: Large, means it is inside a principal city with a population of 250,000 or more. NCES lists Cast Tech High School as a charter school.
Enrollment dropped 8% from its 2020-21 level of 492. Its ratio of students to teachers was 19.7:1 in 2020-21, and 14.9:1 in 2024-25.
To ask about science fairs, picture day, and bus routes, start a discussion on this page. 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 SAN ANTONIO ISD
- Jefferson High SchoolHigh · 1,706 students
- Lanier High SchoolHigh · 1,620 students
- Brackenridge High SchoolHigh · 1,593 students
- Highlands High SchoolHigh · 1,478 students
- Burbank High SchoolHigh · 1,405 students
- Edison High SchoolHigh · 1,360 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
- Brennan High SchoolHigh · 2,965 students
- Harlan High SchoolHigh · 2,778 students
- Clark High SchoolHigh · 2,750 students
Nearby schools
- Fox Technical High School0.0 mi · 499
- Advanced Learning Academy0.0 mi · 1,087
- Saisd - PK 4 Sa0.2 mi · 102
- Driscoll Madison Square Child Development Center0.2 mi · 55
- Positive Solutions Charter0.7 mi · 93
- Henry Ford Academy Alameda School for Art + Design0.8 mi · 61
Frequently asked questions
About Cast Tech High SchoolHow large is Cast Tech High School?
Cast Tech High School enrolls approximately 451 students in grades 09-12.
What age range does Cast Tech High School serve?
Cast Tech High School serves students from grade 09 through grade 12.
How many teachers does Cast Tech High School have?
Cast Tech High School employs 30 FTE teachers, for a student-to-teacher ratio of 14.9:1.
What is the racial breakdown of students at Cast Tech High School?
At Cast Tech High School, the student body is approximately 6% White, 89% Hispanic, 3% Black, 1% Asian, 0% Two or more.
Is Cast Tech High School public or private?
Cast Tech High School is a public K-12 school operated as a charter, overseen by SAN ANTONIO ISD.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.