Castle Hills El vs International School of America
A head-to-head comparison of two schools in Texas, United States, 1.6 km apart, using official American 2025 data. The better value in each row is highlighted.
Castle Hills El
San Antonio · Public elementary · Grades PK–5
439 students
International School of America
San Antonio · Public high · Grades 9–12
493 students
| Measure | Castle Hills El San Antonio, Texas | International School of America San Antonio, Texas |
|---|---|---|
| Success Index (US) | 68 Top 25% | 73 Top 25% |
| State rank | #725 of 4,686 | #171 of 1,419 |
| National rank | #12410 of 50,301 | #2623 of 16,910 |
| Sector | Public | Public |
| Type | Elementary | High |
| Year range | Grades PK–5 | Grades 9–12 |
| Students | 439 | 493 |
| Enrollment | 439 | 493 |
| Free/reduced-price lunch | 38.3% | 22.3% |
| Students per teacher | 13.3 | 21.4 |
| Reading proficiency | 61% | 87% |
| Math proficiency | 55% | 54.5% |
| city | San Antonio | San Antonio |
| state | Texas | Texas |
| Website | – | – |
The verdict
- •International School of America scores higher on the Success Index (US) (72.8 vs 68.4).
- •Castle Hills El does better on math proficiency (55% vs 54.5%).
- •International School of America does better on reading proficiency (87% vs 61%).
- •International School of America does better on community advantage (fewer free/reduced-price lunch) (22.3% vs 38.3%).
- •Castle Hills El does better on students per teacher (13.3 vs 21.4).
- •International School of America is the larger school with 493 students compared with 439.
The Success Index (US) summarises published results and context from official data. It does not measure teaching quality or fit. Methodology.
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Frequently asked questions
Is Castle Hills El better than International School of America?
On the Success Index (US), International School of America ranks higher (72.8 vs 68.4 out of 100). The index is built from published results and context data, not from teaching quality or fit, so visit both schools before deciding.
How far apart are Castle Hills El and International School of America?
About 1.6 km in a straight line, between San Antonio and San Antonio in Texas.
Which has the better Enrollment?
Castle Hills El: 439. International School of America: 493. Students enrolled in the latest NCES directory year.
How do Castle Hills El and International School of America rank in Texas?
Castle Hills El is 725th of 4,686 and International School of America is 171st of 1,419 among elementary schools in Texas on the 2025 Success Index (US).