Alpha: Cornerstone Academy Preparatory vs Robert F. Kennedy Elementary
A head-to-head comparison of two elementary schools in California, United States, 80 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
Robert F. Kennedy Elementary
San Jose · Public elementary · Grades K–6
300 students
| Measure | Alpha: Cornerstone Academy Preparatory San Jose, California | Robert F. Kennedy Elementary San Jose, California |
|---|---|---|
| Success Index (US) | 69 Top 25% | 22 Lower 50% |
| State rank | #862 of 5,693 | #4137 of 5,693 |
| National rank | #11847 of 50,301 | #43602 of 50,301 |
| Sector | Charter | Public |
| Type | Elementary | Elementary |
| Year range | Grades K–8 | Grades K–6 |
| Students | 554 | 300 |
| Enrollment | 554 | 300 |
| Free/reduced-price lunch | 55.2% | 90.3% |
| Students per teacher | 23.1 | 21.4 |
| Reading proficiency | 75% | 39% |
| Math proficiency | 78% | 30% |
| 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 22.0).
- •Alpha: Cornerstone Academy Preparatory does better on math proficiency (78% vs 30%).
- •Alpha: Cornerstone Academy Preparatory does better on reading proficiency (75% vs 39%).
- •Alpha: Cornerstone Academy Preparatory does better on community advantage (fewer free/reduced-price lunch) (55.2% vs 90.3%).
- •Robert F. Kennedy Elementary does better on students per teacher (21.4 vs 23.1).
- •Alpha: Cornerstone Academy Preparatory is the larger school with 554 students compared with 300.
- •Alpha: Cornerstone Academy Preparatory is a charter school while Robert F. Kennedy Elementary is a public school, so fees and admission rules differ.
The Success Index (US) summarises published results and context from official data. It does not measure teaching quality or fit. Methodology.
Free academic assessment
Torn between two schools? Start with your child.
Whichever you choose, a free Success Tutoring assessment shows exactly where your child is in English and Maths and how to get ahead before the next school year.
- Personalised learning plan mapped to the Australian Curriculum
- English & Maths from Kindergarten to Year 12
- Flexible memberships, no lock-in contracts
- Centres across NSW, VIC, QLD, WA, SA and ACT
Frequently asked questions
Is Alpha: Cornerstone Academy Preparatory better than Robert F. Kennedy Elementary?
On the Success Index (US), Alpha: Cornerstone Academy Preparatory ranks higher (69.2 vs 22.0 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 Robert F. Kennedy Elementary?
About 80 m in a straight line, between San Jose and San Jose in California.
Which has the better Enrollment?
Alpha: Cornerstone Academy Preparatory: 554. Robert F. Kennedy Elementary: 300. Students enrolled in the latest NCES directory year.
How do Alpha: Cornerstone Academy Preparatory and Robert F. Kennedy Elementary rank in California?
Alpha: Cornerstone Academy Preparatory is 862nd of 5,693 and Robert F. Kennedy Elementary is 4137th of 5,693 among elementary schools in California on the 2025 Success Index (US).