Best High Schools
in San Antonio, Texas
We ranked the 102 high schools in San Antonio with real test data. The top 25 scored between 6.6 and 9.3 out of 10.
Updated for 2026 · Based on NCES and Texas education data
The short answer
The top-rated high schools in San Antonio for 2026 are International School of America (9.3/10), Young Women's Leadership Academy (8.6/10), and Great Hearts Monte Vista North (8.5/10), based on MySchoolScout's analysis of real test data across 102 rated high schools. Schools with estimated (proxy) scores are excluded from this ranking.
Choosing a high school in San Antonio?
Every high school in San Antonio is scored 1–10 on the same four measures. Use the ranking to build a shortlist, then weigh the tradeoffs a single score can't capture.
Shortlist starter
Start with these real page-level signals, then use the full table and map below.
International School of America
San Antonio, TX. Start here, then open the profile to compare commute, district context, and score components.
Young Women's Leadership Academy
San Antonio, TX. Start here, then open the profile to compare commute, district context, and score components.
Great Hearts Monte Vista North
San Antonio, TX. Start here, then open the profile to compare commute, district context, and score components.
San Antonio's 97 ranked high schools span a wide performance range, with an average composite score of 6.3/10 across the metro. At the top, Alamo Heights H S leads at 9.2/10, followed closely by KIPP SOMOS Collegiate, International School of America, and two CAST campuses — CAST Med and CAST STEM — all scoring 8.8 or above. Twenty-eight schools, roughly 29% of the ranked total, clear the 7/10 threshold, giving families a solid pool of strong options to evaluate. Scores, student-teacher ratios, and other key indicators are sortable in the table below. Whether you're zoned to a neighborhood school or considering a magnet or charter program, the data lets you compare across the full field and focus on what matters most for your student.
International School of America
Young Women's Leadership Academy
Great Hearts Monte Vista North
Score Distribution
Where the top 25 schools fall on a 1-10 scale
How We Ranked San Antonio's High Schools
Every school receives a composite score from 1 to 10 with weights that vary by school level: Student Growth tracks improvement over time and counts most in elementary and middle grades. Poverty-Adjusted Academic Achievement measures standardized test performance in math and reading against socioeconomic expectations. Environment considers class size, spending, and attendance. College Readiness joins the composite for high schools. Equity data is shown for context but is not factored into the score. All scores are computed within Texas so schools are compared to peers in the same state. See our full methodology.
Top 25 of 102 Rankings
| # | School | Score |
|---|---|---|
| 1 | International School of America NORTH EAST ISD | 9.3 |
| 2 | Young Women's Leadership Academy Charter SAN ANTONIO ISD | 8.6 |
| 3 | Great Hearts Monte Vista North Charter GREAT HEARTS TEXAS | 8.5 |
| 4 | Health Careers H S NORTHSIDE ISD | 8.5 |
| 5 | Alamo Heights H S ALAMO HEIGHTS ISD | 8.3 |
| 6 | Robert G Cole Middle/high School FT SAM HOUSTON ISD | 8.2 |
| 7 | Sst Sa College Prep H S Charter SCHOOL OF SCIENCE AND TECHNOLOGY | 8.1 |
| 8 | Reagan H S NORTH EAST ISD | 7.9 |
| 9 | Idea Carver College Preparatory Charter IDEA PUBLIC SCHOOLS | 7.7 |
| 10 | Basis San Antonio- Shavano Campus Charter BASIS TEXAS | 7.7 |
| 11 | Lutheran High School of San Antonio | 7.7 |
| 12 | Virginia Allred Stacey Jr/sr H S LACKLAND ISD | 7.6 |
| 13 | Travis Early College H S Charter SAN ANTONIO ISD | 7.5 |
| 14 | Harlan H S NORTHSIDE ISD | 7.3 |
| 15 | Cast Med H S Charter SAN ANTONIO ISD | 7.3 |
| 16 | Cast Stem H S SOUTHWEST ISD | 7.2 |
| 17 | Brandeis H S NORTHSIDE ISD | 7.1 |
| 18 | Tmi Episcopal | 7.1 |
| 19 | Johnson H S NORTH EAST ISD | 6.9 |
| 20 | Southwest Preparatory School-northwest Charter SOUTHWEST PREPARATORY SCHOOL | 6.8 |
| 21 | Kipp Somos Collegiate Charter KIPP TEXAS PUBLIC SCHOOLS | 6.8 |
| 22 | St Philip's College Early College H S With Saisd Charter SAN ANTONIO ISD | 6.8 |
| 23 | St Anthony Catholic High School | 6.8 |
| 24 | Idea Judson College Preparatory Charter IDEA PUBLIC SCHOOLS | 6.7 |
| 25 | Clark H S NORTHSIDE ISD | 6.6 |
Scores are based on 2024-25 data from the NCES Common Core of Data and Texas education department. Rankings are relative to all public high schools in Texas. Learn about our methodology.
Map: Top 25 High Schools in San Antonio
Pins are color-coded by score: green (7+), yellow (4-6.9), red (below 4). Click a pin for details.
School Spotlights: San Antonio's Top 10 High Schools
Choosing the Right High School in San Antonio
Rankings identify schools with the strongest measurable outcomes, but the right school for your family depends on more than a number. San Antonio's high school landscape is one of the most diverse in Texas, with 116 schools spanning 44 school districts, plus 42 charter schools offering alternative approaches.
Consider your child's learning style. Some children thrive in smaller settings (look for student-teacher ratios under 14:1), while others do well in larger, more social environments. The schools on this list range widely in size and approach.
Look beyond the composite score. A school ranked #15 might be the best fit if it excels in growth (improving student outcomes year over year) even if its raw academic score is lower. Click into individual school profiles to see the breakdown.
Visit your top choices. Walk the hallways during a school day. Watch how teachers interact with students. Ask about before- and after-school care, transportation, and parent involvement. These details matter more than any dataset.
Frequently Asked Questions
What is the best high school in San Antonio, Texas?
According to MySchoolScout's 2026 rankings, International School of America is the top-rated high school in San Antonio with a composite score of 9.3/10. The score blends student growth, poverty-adjusted academic performance, and school environment — plus college readiness for high schools — with equity shown as context, not scored.
How many high schools are in San Antonio, Texas?
San Antonio has 116 high schools, including 42 charter schools. Of these, 106 have enough data for a full composite rating on MySchoolScout.
What is the average high school rating in San Antonio?
The average composite score for San Antonio high schools is 5.6/10. Scores range from 1.0 (bottom of the state) to 10.0 (top 1% in Texas).
How does MySchoolScout rate high schools?
Each school receives a 1-10 composite score that blends Student Growth, Poverty-Adjusted Academic Achievement, and School Environment — plus College Readiness for high schools. Weights vary by school level, with growth counting most in elementary and middle grades. Equity data is shown for context but not scored. All scores are computed within Texas, so schools are compared to peers in the same state. Data comes from the NCES Common Core of Data and state education departments.
What is a good school rating on MySchoolScout?
A score of 7 or above means a school is in roughly the top 30% of its state. A 5 is average. Anything above 8 is exceptional. Our ratings are relative to other schools in Texas, not a national comparison, because each state has different testing standards.
Are charter schools included in the San Antonio high school rankings?
Yes. San Antonio has 42 charter high schools, and they are ranked alongside traditional public schools using the same composite scoring methodology.