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Cast Stem High School

Q: Is Cast Stem High School a good school?

Cast Stem High School ranks 793 rd of 2009 Texas high schools. SchoolDigger rates this school 3 stars out of 5.

Public Grades 9-12

793^rd

SchoolDigger Rank ?

of 2,009 Texas High Schools

Better than 61% of Texas high schools

Summary

Cast Stem High School is a small, specialized high school in San Antonio, TX, serving 173 students in grades 9-12 within the Southwest Independent School District (Isd). This school stands out for its intimate learning environment, with a low student-teacher ratio of 10.2:1 and a perfect 100% graduation rate for the 2023-2024 school year, significantly outperforming district averages.

What makes Cast Stem particularly interesting is its location on the same campus as the much larger Southwest High School, just 0.29 miles away. Despite sharing a physical space, these two schools serve vastly different student populations and achieve different results. Cast Stem's proficiency rates in English II (83%) and U.S. History (80%) far exceed those at Southwest High (57% and 63%, respectively). The school also benefits from higher per-student spending ($13,798) compared to nearby comprehensive schools like Southwest Legacy High School ($10,508). However, parents should note that Cast Stem's overall ranking dropped from the 84th percentile (4 stars) in 2024-2025 to the 61st percentile (3 stars) in 2025-2026, a decline seen across most student groups.

While Cast Stem excels in many areas, it has a persistent weakness in Algebra I, with only 11% of students proficient in 2025-2026—far below the state average of 54%. This is a critical concern for a STEM-focused school. For comparison, other small specialized schools in the area, such as Shirleen Zacharias Early Clge Leadership Academy (95th percentile) and Frank L Madla Early College High School (85th percentile), have maintained stronger and more consistent performance. Despite these challenges, Cast Stem has historically shown effectiveness with diverse learners, including students from low socio-economic backgrounds and those in special education programs.

173

Students ?

10.2

Student/teacher ratio ?

$15,966

Per pupil spending ?

59%

Free/discounted lunch ?

11914 Dragon Ln
San Antonio, TX 78252-2647

(210) 622-4300

District: Southwest Independent School District (Isd)

Racial breakdown:

Hispanic:

85.5%

White:

6.9%

African American:

3.5%

See top rated Texas high schools

Compare Cast Stem High School to nearby high schools!

At a glance

▼ Ranking trend: Declining — 71st percentile in 2023 → 61st in 2026

Strengths

✓100% graduate within 4 years

✓Above the Texas median (61st percentile)

✓Small classes — about 10 students per teacher

Worth a look

!Ranking has slipped — down 10 percentile points since 2023

!Some student groups rank well below the school's overall statewide standing

!Algebra I scores 43 pts below the Texas average

Students meeting standards (2025-2026) ?

This school62%

District avg48%

Texas avg62%

793^rd of 2,009

Texas public high schools ?

Top 39%▼ down 11 pts since 2023

From top 29% (2023) to top 39% (2026)

See the entire ranking list of Texas High Schools →

★★★★★

SchoolDigger rating ?

1^st of 3High Schools in the Southwest Independent School District (Isd)

663^rd of 951Southwest Independent School District (Isd) among Texas districts

Statewide rank percentile over time (100 = the top-ranked school in the state; click a legend item to add a student group)

Show full rank history (all student groups)

All Students

Year	Avg score	Statewide rank	Texas percentile	Rating
2026	56.0	793 of 2009	60.5%	★★★☆☆
2025	74.2	320 of 1974	83.8%	★★★★☆
2024	71.3	394 of 1990	80.2%	★★★★☆
2023	64.7	563 of 1961	71.3%	★★★★☆

African American

Year	Avg score	Statewide rank	Texas percentile	Rating
2026	62.9	291 of 1086	73.2%	★★★★☆

At Risk

Year	Avg score	Statewide rank	Texas percentile	Rating
2022	72.7	236 of 1837	87.2%	★★★★☆
2021	53.5	646 of 1829	64.7%	★★★☆☆
2019	38.2	1100 of 1810	39.2%	★★☆☆☆

English Language Learner

Year	Avg score	Statewide rank	Texas percentile	Rating
2026	34.6	765 of 1195	36.0%	★★☆☆☆
2025	53.7	330 of 1153	71.4%	★★★★☆
2024	62.4	308 of 1437	78.6%	★★★★☆
2023	99.7	5 of 1371	99.6%	★★★★★
2022	83.8	101 of 1278	92.1%	★★★★★
2021	37.3	704 of 1195	41.1%	★★☆☆☆
2019	62.8	246 of 1136	78.3%	★★★★☆

Female

Year	Avg score	Statewide rank	Texas percentile	Rating
2026	49.3	934 of 1936	51.8%	★★★☆☆
2025	63.8	410 of 1504	72.7%	★★★★☆
2024	71.4	329 of 1880	82.5%	★★★★☆
2023	67.7	469 of 1891	75.2%	★★★★☆
2022	67.7	429 of 1841	76.7%	★★★★☆
2021	50.5	873 of 1815	51.9%	★★★☆☆
2019	61.8	590 of 1798	67.2%	★★★☆☆

Gifted and Talented

Year	Avg score	Statewide rank	Texas percentile	Rating
2026	39.7	959 of 1206	20.5%	★☆☆☆☆
2025	65.7	355 of 964	63.2%	★★★☆☆
2023	58.6	668 of 1182	43.5%	★★☆☆☆
2022	49.6	792 of 1172	32.4%	★★☆☆☆
2021	30.5	982 of 1177	16.6%	★☆☆☆☆
2019	31.7	971 of 1145	15.2%	★☆☆☆☆

Hispanic

Year	Avg score	Statewide rank	Texas percentile	Rating
2026	57.6	620 of 1860	66.7%	★★★☆☆
2025	69.1	247 of 1453	83.0%	★★★★☆
2024	71.9	281 of 1805	84.4%	★★★★☆
2023	65.4	440 of 1820	75.8%	★★★★☆
2022	74.7	237 of 1762	86.5%	★★★★☆
2021	53.0	707 of 1743	59.4%	★★★☆☆
2019	59.0	546 of 1714	68.1%	★★★☆☆

Low Socio Economic Status

Year	Avg score	Statewide rank	Texas percentile	Rating
2026	51.5	785 of 1937	59.5%	★★★☆☆
2025	64.3	299 of 1513	80.2%	★★★★☆
2024	70.0	279 of 1884	85.2%	★★★★☆
2023	62.9	475 of 1897	75.0%	★★★★☆
2022	75.1	213 of 1847	88.5%	★★★★☆
2021	56.0	646 of 1848	65.0%	★★★☆☆
2019	61.0	478 of 1818	73.7%	★★★★☆

Male

Year	Avg score	Statewide rank	Texas percentile	Rating
2026	57.7	694 of 1954	64.5%	★★★☆☆
2025	68.1	304 of 1515	79.9%	★★★★☆
2024	65.2	458 of 1891	75.8%	★★★★☆
2023	62.4	577 of 1913	69.8%	★★★☆☆
2022	72.0	335 of 1853	81.9%	★★★★☆
2021	45.8	931 of 1840	49.4%	★★☆☆☆
2019	50.7	797 of 1824	56.3%	★★★☆☆

Special Education

Year	Avg score	Statewide rank	Texas percentile	Rating
2026	50.7	593 of 1581	62.5%	★★★☆☆
2025	81.8	92 of 1299	92.9%	★★★★★
2024	55.3	514 of 1548	66.8%	★★★☆☆
2023	69.5	250 of 1478	83.1%	★★★★☆
2022	93.5	53 of 1418	96.3%	★★★★★
2021	58.1	386 of 1382	72.1%	★★★★☆
2019	63.6	290 of 1357	78.6%	★★★★☆

White

Year	Avg score	Statewide rank	Texas percentile	Rating
2026	71.5	288 of 1584	81.8%	★★★★☆
2024	91.8	31 of 1556	98.0%	★★★★★
2023	64.0	443 of 1576	71.9%	★★★★☆
2021	42.8	903 of 1510	40.2%	★★☆☆☆

How student groups rank statewide ? (each group's percentile vs the same group at other schools — higher is better; the +/- beside each compares the group with this school's overall percentile)

At Risk (2022)87th percentile

White (2026)82nd percentile+21 vs school

African American (2026)73rd percentile+13 vs school

Hispanic (2026)67th percentile+6 vs school

Male (2026)64th percentile+4 vs school

Special Education (2026)62nd percentile~ school

Low Socio Economic Status (2026)59th percentile~ school

Female (2026)52nd percentile-9 vs school

English Language Learner (2026)36th percentile-25 vs school

Gifted and Talented (2026)20th percentile-40 vs school

By subject vs Texas (2025-2026) ?

English II Reading83%+23 vs state

U.S. History80%+10 vs state

English I Reading68%+13 vs state

Biology64%-7 vs state

Algebra I11%-43 vs state

★

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Schools Near Cast Stem High School

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Ranking:

E Elementary M Middle H High A Alternative P Private

Choose columns to see: Summary School Students/Teachers Ranking Test Scores Finance All

School													Students/Teachers											Ranking (2026)				Ranking (2025)				STAAR EOC Algebra I (2026)	STAAR EOC Biology (2026)	STAAR EOC English I Reading (2026)	STAAR EOC English II Reading (2026)	STAAR EOC U.S. History (2026)	STAAR Reading (2026)			STAAR Mathematics (2026)			STAAR Social Studies (2026)	Per Pupil Expenditures (2024)
Name	Type	Grades	Address	City	Zip	County	District	Is Charter	Is Magnet	Is Virtual	Is Title I	Phone	Enrollment	Full-time Teachers	Student/ Teacher Ratio	Free/Discounted Lunch Recipients	White	Black	Hispanic	Asian	American Indian	Pacific Islander	Two or More Races	Average Standard Score (2026)	Statewide Rank (2026)	State Percentile (2026)	SchoolDigger Rating (2026)	Average Standard Score (2025)	Statewide Rank (2025)	State Percentile (2025)	Rank Change from Previous Year	STAAR EOC Algebra I End of Course	STAAR EOC Biology End of Course	STAAR EOC English I Reading End of Course	STAAR EOC English II Reading End of Course	STAAR EOC U.S. History End of Course	STAAR Reading 6th Grade	STAAR Reading 7th Grade	STAAR Reading 8th Grade	STAAR Mathematics 6th Grade	STAAR Mathematics 7th Grade	STAAR Mathematics 8th Grade	STAAR Social Studies 8th Grade	Total
Cast Stem High School	Public	9-12	11914 Dragon Ln	San Antonio	78252	Bexar County	Southwest Independent School District (Isd)	No	No	(n/a)	Yes	(210) 622-4300	173	17	10.2	59.0%	12 (6.9%)	6 (3.5%)	148 (85.5%)	5 (2.9%)	0 (0.0%)	0 (0.0%)	2 (1.2%)	56	793^rd of 2009 public high schools	60.5%		74.2	320^th of 1974 public high schools	83.8%	473	11.1	63.9	68.1	82.9	80.3								$15,966
Southwest High School	Public	9-12	11690 Dragon Ln	San Antonio	78252	Bexar County	Southwest Independent School District (Isd)	No	No	(n/a)	Yes	(210) 622-4500	2,363	146	16.1	74.4%	125 (5.3%)	113 (4.8%)	2,071 (87.6%)	11 (0.5%)	3 (0.1%)	4 (0.2%)	36 (1.5%)	40	1235^th of 2009 public high schools	38.5%		35.2	1267^th of 1974 public high schools	35.8%	32	23.0	56.8	47.4	57.5	72.0								$10,701
Southwest Legacy High School	Public	9-12	4495 Verano Pkwy Bldg 100	Von Ormy	78073	Bexar County	Southwest Independent School District (Isd)	No	No	(n/a)	Yes	(210) 623-6539	2,250	127	17.7	89.9%	41 (1.8%)	92 (4.1%)	2,089 (92.8%)	12 (0.5%)	2 (0.1%)	0 (0.0%)	14 (0.6%)	22.4	1619^th of 2009 public high schools	19.4%		24.1	1540^th of 1974 public high schools	22.0%	79	18.1	51.2	32.7	38.3	60.6								$9,930
Idea Brackenridge College Preparatory	Public, Charter	6-12	5555 Old Pearsall Rd	San Antonio	78242	Bexar County	Idea Public Schools	Yes	No	(n/a)	Yes	(210) 239-4300	671	37	18.2	81.1%	37 (5.5%)	16 (2.4%)	606 (90.3%)	2 (0.3%)	3 (0.4%)	0 (0.0%)	7 (1.0%)	40.4	1223^rd of 2009 public high schools	39.1%		27	1468^th of 1974 public high schools	25.6%	245	39.9	69.2	54.6	56.4	47.1	59.3	53.2	58.3	33.6	37.9		35.0	$10,327
Somerset High School	Public	9-12	7650 S Loop 1604 W	Somerset	78069	Bexar County	Somerset Independent School District (Isd)	No	No	(n/a)	Yes	(210) 750-8958	1,175	77	15.3	75.7%	66 (5.6%)	5 (0.4%)	1,094 (93.1%)	3 (0.3%)	0 (0.0%)	1 (0.1%)	6 (0.5%)	48	997^th of 2009 public high schools	50.4%		38.9	1193^rd of 1974 public high schools	39.6%	196	43.8	72.6	56.0	62.6	53.3								$10,561
Shirleen Zacharias Early Clge Leadership Academy	Public	9-12	7790 E 3rd St	Somerset	78069	Bexar County	Somerset Independent School District (Isd)	No	No	(n/a)	No	(210) 750-8959	128	7	18.0	78.9%	9 (7.0%)	1 (0.8%)	116 (90.6%)	2 (1.6%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	86.7	100^th of 2009 public high schools	95.0%		88.8	80^th of 1974 public high schools	95.9%	20		85.7	85.7	100.0	83.3								$6,772
Virginia Allred Stacey Junior/Senior High School	Public	6-12	2460 Kenly Ave Bldg 8265	San Antonio	78236	Bexar County	Lackland Independent School District (Isd)	No	No	(n/a)	No	(210) 357-5100	395	41	9.6	11.4%	150 (38.0%)	51 (12.9%)	125 (31.6%)	5 (1.3%)	1 (0.3%)	2 (0.5%)	61 (15.4%)	74.3	340^th of 2009 public high schools	83.1%		79.8	227^th of 1974 public high schools	88.5%	113	60.8	81.3	66.7	89.8	94.7	54.4	76.8	71.7	39.7	31.7	59.4	41.5	$15,812
Lighthouse High	Public, Charter	9-12	8138 Westshire Dr	San Antonio	78227	Bexar County	Lighthouse Public Schools	Yes	No	(n/a)	Yes	(210) 236-7693	88	5	17.3	84.1%	13 (14.8%)	1 (1.1%)	72 (81.8%)	0 (0.0%)	1 (1.1%)	1 (1.1%)	0 (0.0%)	22.2	1625^th of 2009 public high schools	19.1%		8.1	1814^th of 1974 public high schools	8.1%	189	14.8	52.4	30.8	38.5	66.7
Frank L Madla Early College High School	Public, Charter	9-12	1400 W Villaret Blvd	San Antonio	78224	Bexar County	New Frontiers Public Schools Inc	Yes	No	(n/a)	Yes	(210) 486-3686	150	4	38.1	50.0%	8 (5.3%)	2 (1.3%)	140 (93.3%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	76.4	292^nd of 2009 public high schools	85.5%		61.1	644^th of 1974 public high schools	67.4%	352	65.8	82.9	79.1	83.3	91.7								$8,659
Alternative School	Public	6-12	8634 Larkia Ln	San Antonio	78224	Bexar County	South San Antonio Independent School District (Isd)	No	(n/a)	(n/a)	(n/a)	(210) 977-7474	62	4	17.0	83.9%	0 (0.0%)	1 (1.6%)	61 (98.4%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1.3	2001^st of 2009 public high schools	0.4%					(n/a)	0.0	0.0	0.0	0.0		12.5	9.1	0.0	0.0		0.0	0.0	$7,127

Frequently Asked Questions about Cast Stem High School

How many students attend Cast Stem High School?

In the 2024-25 school year, 173 students attended Cast Stem High School.

What is the racial makeup of Cast Stem High School?

Students at Cast Stem High School are 86% Hispanic, 7% White, 3% African American, 3% Asian, 1% Two or more races.

Is Cast Stem High School a good school?

Cast Stem High School ranks 793^rd of 2009 Texas high schools. SchoolDigger rates this school 3 stars out of 5.

What district is Cast Stem High School in?

Southwest Independent School District (Isd)

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Latest Texas data All new data »

2025–26 STAAR, STAAR EOC & STAAR Spanish test scoresJun 12, 2026

2021–22 through 2023–24 school spending dataJan 10, 2026

2023–24 dropout rates & graduation ratesSep 17, 2025

2024–25 STAAR EOC & STAAR Spanish test scoresJun 23, 2025

SchoolDigger data sources: National Center for Education Statistics, U.S. Department of Education, the U.S. Census Bureau and the Texas Education Agency.

IMPORTANT DISCLAIMERS: Not all boundaries are included. We make every effort to ensure that boundaries are up-to-date. But it's important to note that these are approximations and are for general informational purposes only. To verify legal descriptions of boundaries or school locations, contact your local tax assessor's office and/or school district.