Alpha: Cornerstone Academy Preparatory vs Discovery Charter
A head-to-head comparison of two elementary schools in California, United States, 11 km apart, using official American 2025 data. The better value in each row is highlighted.
Alpha: Cornerstone Academy Preparatory
San Jose · Charter elementary · Grades K–8
554 students
Discovery Charter
San Jose · Charter elementary · Grades K–8
555 students
| Measure | Alpha: Cornerstone Academy Preparatory San Jose, California | Discovery Charter San Jose, California |
|---|---|---|
| Success Index (US) | 69 Top 25% | 74 Top 25% |
| State rank | #862 of 5,693 | #601 of 5,693 |
| National rank | #11847 of 50,301 | #8570 of 50,301 |
| Sector | Charter | Charter |
| Type | Elementary | Elementary |
| Year range | Grades K–8 | Grades K–8 |
| Students | 554 | 555 |
| Enrollment | 554 | 555 |
| Free/reduced-price lunch | 55.2% | 17.5% |
| Students per teacher | 23.1 | 24.1 |
| Reading proficiency | 75% | 72% |
| Math proficiency | 78% | 68% |
| city | San Jose | San Jose |
| state | California | California |
| Website | – | – |
The verdict
- •Discovery Charter scores higher on the Success Index (US) (74.0 vs 69.2).
- •Alpha: Cornerstone Academy Preparatory does better on math proficiency (78% vs 68%).
- •Alpha: Cornerstone Academy Preparatory does better on reading proficiency (75% vs 72%).
- •Discovery Charter does better on community advantage (fewer free/reduced-price lunch) (17.5% vs 55.2%).
- •Alpha: Cornerstone Academy Preparatory does better on students per teacher (23.1 vs 24.1).
- •Discovery Charter is the larger school with 555 students compared with 554.
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 Alpha: Cornerstone Academy Preparatory better than Discovery Charter?
On the Success Index (US), Discovery Charter ranks higher (74.0 vs 69.2 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 Alpha: Cornerstone Academy Preparatory and Discovery Charter?
About 11 km in a straight line, between San Jose and San Jose in California.
Which has the better Enrollment?
Alpha: Cornerstone Academy Preparatory: 554. Discovery Charter: 555. Students enrolled in the latest NCES directory year.
How do Alpha: Cornerstone Academy Preparatory and Discovery Charter rank in California?
Alpha: Cornerstone Academy Preparatory is 862nd of 5,693 and Discovery Charter is 601st of 5,693 among elementary schools in California on the 2025 Success Index (US).