The bulletin board for America's public schools. Parents, teachers, students, and staff. One community per school.
SCHOOL COMMUNITY·SAN ANTONIO ISD·NCES 483873013665

CAST TECH H S

637 N MAIN, SAN ANTONIO, TX 78205 · (210) 554-2700 · Bexar County
GRADES 09–12HIGH11-CITYCHARTERTITLE IREGULAR SCHOOL451 STUDENTS
Enrollment
451
High
DISTRICT 699 · STATE 796
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
Grade 9
91
Grade 10
126
Grade 11
116
Grade 12
118
Student demographics
White
296%
DISTRICT 3% · STATE 24%
Hispanic
40189%
DISTRICT 90% · STATE 54%
Black
123%
DISTRICT 5% · STATE 13%
Asian
61%
DISTRICT 1% · STATE 6%
Two+
20%
DISTRICT 1% · STATE 3%
Pacific Islander
10%
DISTRICT 0% · STATE 0%
Student head counts by race/ethnicity from federal NCES enrollment data. Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Male
30467%
Female
14733%

Discussions

+ POST

Test scores

STAAR 2023-24 . % Meets Grade Level or Above
Reading
68.0%
TX avg 51.8% . +25.0pp since 2020
Mathematics
29.0%
TX avg 42.0% . -9.0pp since 2020
Source: STAAR. All students, all grades. See all years and grades →

BeatsExpectations

Demographically-adjusted score · methodology
Tier
OUTPERFORMING
Top 10% of TX schools after controlling for student poverty
Actual proficiency
61.3%
composite math + reading, all grades
Predicted
45.9%
based on TX schools with similar FRL share
Beats by
+15.3pp
above demographic expectation
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →

7-year change

SY 2017-18 vs SY 2024-25
Enrollment
451
+304 (+207%) vs 2017
Student : Teacher
14.9:1
was 18.4:1
% White
6%
was 10%
% Hispanic
89%
was 86%
% Black
3%
was 3%
% Asian
1%
was 0%
Source: NCES Common Core of Data

About CAST TECH H S

CAST TECH H S is one of the compact 9-12 campuss in SAN ANTONIO, Texas, overseen by SAN ANTONIO ISD, with 451 students on its rolls from grades 9 through 12. Enrollment runs roughly 43% leaner than the state mean of about 796.

Within SAN ANTONIO ISD, which oversees 100 schools and 47,623 students, CAST TECH H S is one campus in the system.

Demographically, CAST TECH H S logs that nearly all students (89%) are Hispanic. Beyond that, the school logs 6% White, 3% Black. The wider county runs roughly 60% Hispanic, putting the school's mix considerably more Hispanic than the area baseline.

In terms of school funding signals, On paper, CAST TECH H S has 30 full-time-equivalent teachers, translating to a class-load average of around 14.9:1. The state averages about 15.1:1, putting this campus right in line with peers. About 64% of enrolled students meet the income threshold for free or reduced-price lunch, often used as a Title I proxy.

After controlling for student poverty, CAST TECH H S sits in the top 10% of Texas schools after the BeatsExpectations adjustment. Predicted proficiency for the school's FRL share is roughly 45.9%; actual is 61.3%, +15.3 points clear of the demographic baseline.

In the surrounding community, community-level numbers for Bexar County indicate median household earnings sit near $72,341, 32% of adults hold a bachelor's degree or higher, and census figures put the poverty rate at about 11%. In all, Bexar County runs 638 public schools (combined enrollment of about 368,487 students), of which CAST TECH H S is one.

Nearest neighbor: ADVANCED LEARNING ACADEMY, around 0.0 miles off. Within five miles, there are 8 other public schools. Among the 4 schools in that immediate cluster with test data (this one included), CAST TECH H S ranks 1st on composite proficiency, higher than the local average of 47.6%.

Geographically, the school is in a downtown area. CAST TECH H S operates as a public charter school, meaning it is publicly funded but governed independently of the surrounding district's traditional schools.

Trend over the last 7 years. Looking back 7 years, enrollment at CAST TECH H S has rose 207%, going from 147 students in 2018 to 451 in 2025. Class-load math has fell: from 18.4:1 in 2018 to 14.9:1 in 2025.

On allk12, the feed for CAST TECH H S typically covers classroom updates, athletics, and weather closures. The community welcomes input from current and former families.

Bexar County at a glance

View full county profile
Population
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

School name
CAST TECH H S
District
SAN ANTONIO ISD
Address
637 N MAIN, SAN ANTONIO, TX 78205
Phone
(210) 554-2700
County
Bexar County
Level
High
Grade range
09–12
Total enrollment
451
Teachers (FTE)
30
Student–teacher ratio
14.9:1
Free/Reduced lunch
289 (64%)
Locale
11-City: Large
NCES ID
483873013665
Charter school
Yes
Virtual school
No

Related schools

Other schools in SAN ANTONIO ISD
Other schools in SAN ANTONIO
Nearby schools

Frequently asked questions

About CAST TECH H S
How large is CAST TECH H S?
CAST TECH H S enrolls approximately 451 students in grades 09-12.
What age range does CAST TECH H S serve?
CAST TECH H S serves students from grade 09 through grade 12.
How many teachers does CAST TECH H S have?
CAST TECH H S employs 30 FTE teachers, for a student-to-teacher ratio of 14.9:1.
What is the racial breakdown of students at CAST TECH H S?
At CAST TECH H S, the student body is approximately 6% White, 89% Hispanic, 3% Black, 1% Asian, 0% Two or more.
Is CAST TECH H S public or private?
CAST TECH H S 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.
+ Post