Alpha: Cornerstone Academy Preparatory vs Rocketship Mosaic Elementary
A head-to-head comparison of two elementary schools in California, United States, 634 m 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
Rocketship Mosaic Elementary
San Jose · Charter elementary · Grades K–5
528 students
| Measure | Alpha: Cornerstone Academy Preparatory San Jose, California | Rocketship Mosaic Elementary San Jose, California |
|---|---|---|
| Success Index (US) | 69 Top 25% | 59 Top 50% |
| State rank | #862 of 5,693 | #1438 of 5,693 |
| National rank | #11847 of 50,301 | #19083 of 50,301 |
| Sector | Charter | Charter |
| Type | Elementary | Elementary |
| Year range | Grades K–8 | Grades K–5 |
| Students | 554 | 528 |
| Enrollment | 554 | 528 |
| Free/reduced-price lunch | 55.2% | 66.9% |
| Students per teacher | 23.1 | 33.0 |
| Reading proficiency | 75% | 63% |
| Math proficiency | 78% | 72% |
| city | San Jose | San Jose |
| state | California | California |
| Website | – | – |
The verdict
- •Alpha: Cornerstone Academy Preparatory scores higher on the Success Index (US) (69.2 vs 58.7).
- •Alpha: Cornerstone Academy Preparatory does better on math proficiency (78% vs 72%).
- •Alpha: Cornerstone Academy Preparatory does better on reading proficiency (75% vs 63%).
- •Alpha: Cornerstone Academy Preparatory does better on community advantage (fewer free/reduced-price lunch) (55.2% vs 66.9%).
- •Alpha: Cornerstone Academy Preparatory does better on students per teacher (23.1 vs 33.0).
- •Alpha: Cornerstone Academy Preparatory is the larger school with 554 students compared with 528.
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 Rocketship Mosaic Elementary?
On the Success Index (US), Alpha: Cornerstone Academy Preparatory ranks higher (69.2 vs 58.7 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 Rocketship Mosaic Elementary?
About 634 m in a straight line, between San Jose and San Jose in California.
Which has the better Enrollment?
Alpha: Cornerstone Academy Preparatory: 554. Rocketship Mosaic Elementary: 528. Students enrolled in the latest NCES directory year.
How do Alpha: Cornerstone Academy Preparatory and Rocketship Mosaic Elementary rank in California?
Alpha: Cornerstone Academy Preparatory is 862nd of 5,693 and Rocketship Mosaic Elementary is 1438th of 5,693 among elementary schools in California on the 2025 Success Index (US).