International School of America
🇺🇸 Official data · 2025San Antonio, Texas 78213 · North East ISD
#171 of 1,419 high schools in Texas
#2623 of 16,910 nationally
About International School of America
International School of America is a public high located in San Antonio, in the North East ISD school district of Texas, United States. It caters for Grades 9–12. In 2025 it enrolled 493 students. Traditional public schools run by a school district; free to attend.
Its Success Index (US) is 72.8 out of 100, placing it in the top 25% of high schools in United States and 171st of 1,419 ranked high schools in Texas. Its strongest component is reading proficiency (92th percentile), and its weakest is students per teacher (12th percentile).
Other published figures: enrollment 493.
There are 476 schools in San Antonio; International School of America ranks 45th of 448 scored schools there.
Success Index (US) breakdown
Each component is a percentile against high schools across United States.
- Math proficiency (30%)54.5%
- Reading proficiency (30%)87%
- Community advantage (fewer free/reduced-price lunch) (25%)22.3%
- Students per teacher (15%)21.4
The Success Index (US) summarises published data about a school community. It is not a measure of teaching quality. Read the methodology.
Published measures
All figures published for International School of America by the official sources.
- Enrollment
- 493
- Students enrolled in the latest NCES directory year.
- Free/reduced-price lunch
- 22.3%
- Share of students eligible for free or reduced-price lunch.
- Students per teacher
- 21.4
- Enrollment divided by FTE teachers; not class size.
- Reading proficiency
- 87%
- Share of tested students proficient or above (all students, all grades).
- Math proficiency
- 54.5%
- Share of tested students proficient or above (all students, all grades).
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Schools near International School of America
Closest schools by straight-line distance, with their Success Index (US).
Legacy of Educational Excellence H S
San Antonio · Public high · Grades 9–12
2,285 students · 0 m away
Jackson-Keller El
San Antonio · Public elementary · Grades K–5
552 students · 423 m away
Nimitz Middle
San Antonio · Public middle · Grades 6–8
995 students · 1.1 km away
Olmos El
San Antonio · Public elementary · Grades PK–5
486 students · 1.2 km away
Pre-K Academy at West Avenue
San Antonio · Public other · Grades PK–PK
391 students · 1.3 km away
Castle Hills El
San Antonio · Public elementary · Grades PK–5
439 students · 1.6 km away
Somerset Academy Lone Star
San Antonio · Charter elementary · Grades K–5
98 students · 1.7 km away
Jackson Middle
San Antonio · Public middle · Grades 6–8
640 students · 2.0 km away
Legacy Traditional - Basse Pri
San Antonio · Charter elementary · Grades PK–5
250 students · 2.1 km away
Legacy Traditional- Basse Secondary
San Antonio · Charter high · Grades 6–12
164 students · 2.1 km away
Similar schools
Public high schools in Texas with a comparable Enrollment.
Coldspring-Oakhurst H S
Coldspring · Public high · Grades 9–12
492 students
Judge Barefoot Sanders Law Magnet
Dallas · Public high · Grades 9–12
494 students
Young Women's College Prep Academy
Houston · Public high · Grades 6–12
494 students
Mineola H S
Mineola · Public high · Grades 9–12
492 students
Onalaska JR/SR High
Onalaska · Public high · Grades 7–12
492 students
West Oso H S
Corpus Christi · Public high · Grades 9–12
491 students
Frequently asked questions
Is International School of America a good school?
International School of America has a Success Index (US) of 72.8 out of 100 (Top 25% of high schools in United States) and ranks #171 of 1,419 in Texas. The index summarises published data about the school community and, where available, attainment; it does not measure teaching quality, so visit the school and ask about support at your child's level.
Where does International School of America rank in Texas?
International School of America ranks #171 of 1,419 high schools in Texas and #2623 of 16,910 nationally on the Success Index (US) (2025 data).
How many students attend International School of America?
International School of America had 493 students in 2025.
Is International School of America a elementary school or a high school?
International School of America is classified as a high covering Grades 9–12. It is a public school.
What other schools are near International School of America?
There are 10 schools within 15 km of International School of America; they are listed on this page with their Success Index (US) and distance, and can be compared side by side.