ALAMO HEIGHTS H S vs INTERNATIONAL SCHOOL OF AMERICA

Alamo Heights H S edges out International School of America by 0.4 points overall — 9.3/10 versus 8.9/10 — a modest but meaningful gap when both schools sit in San Antonio's upper tier. The state rank separation is sharper: Alamo Heights H S lands at #69 of 8,547 Texas schools, while International School of America ranks #301 of the same pool. Both are genuinely elite, but Alamo Heights H S is among the top 1% statewide, while International School of America falls in roughly the top 4%.

Academically, the two schools are identical on paper: both score 9.0/10, meaning neither has a measurable edge in raw proficiency. The real divergence appears in growth. Alamo Heights H S earns a 9.9/10 growth score versus International School of America's 7.6/10 — a 2.3-point gap indicating that students at Alamo Heights H S are outpacing their predicted trajectories at an exceptionally high rate. For families who weight year-over-year academic momentum, that difference is concrete and significant.

Alamo Heights H S enrolls 1,537 students compared to International School of America's 496, so the campuses feel meaningfully different in scale. Despite its larger size, Alamo Heights H S maintains a student-teacher ratio of 12.8:1, only slightly above International School of America's 11.3:1 — a 1.5-student difference that is unlikely to drive class-size decisions on its own. Free and reduced lunch eligibility is nearly even: 19% at Alamo Heights H S versus 22% at International School of America, indicating comparable socioeconomic demographics at both campuses.

Both schools serve grades 9–12, so the instructional span is identical. The distance between the two campuses is just 3.2 miles, meaning proximity alone will rarely break a tie. Families choosing on pure academic output will find Alamo Heights H S holding a stronger overall and growth position; families seeking a smaller school environment will find International School of America's 496-student enrollment and 11.3:1 ratio offer a more intimate setting despite its slightly lower composite score.