Castle Rock Elementary vs Diamond Bar High
A head-to-head comparison of two schools in California, United States, 1.2 km apart, using official American 2025 data. The better value in each row is highlighted.
Castle Rock Elementary
Diamond Bar · Public elementary · Grades K–5
684 students
Diamond Bar High
Diamond Bar · Public high · Grades 9–12
2,563 students
| Measure | Castle Rock Elementary Diamond Bar, California | Diamond Bar High Diamond Bar, California |
|---|---|---|
| Success Index (US) | 73 Top 25% | 74 Top 25% |
| State rank | #665 of 5,693 | #61 of 1,343 |
| National rank | #9497 of 50,301 | #2274 of 16,910 |
| Sector | Public | Public |
| Type | Elementary | High |
| Year range | Grades K–5 | Grades 9–12 |
| Students | 684 | 2,563 |
| Enrollment | 684 | 2,563 |
| Free/reduced-price lunch | 26.6% | 22.6% |
| Students per teacher | 26.3 | 26.2 |
| Reading proficiency | 70% | 80% |
| Math proficiency | 73% | 73% |
| city | Diamond Bar | Diamond Bar |
| state | California | California |
| Website | – | – |
The verdict
- •Diamond Bar High scores higher on the Success Index (US) (74.3 vs 72.6).
- •Diamond Bar High does better on reading proficiency (80% vs 70%).
- •Diamond Bar High does better on community advantage (fewer free/reduced-price lunch) (22.6% vs 26.6%).
- •Diamond Bar High does better on students per teacher (26.2 vs 26.3).
- •Diamond Bar High is the larger school with 2,563 students compared with 684.
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 Rock Elementary better than Diamond Bar High?
On the Success Index (US), Diamond Bar High ranks higher (74.3 vs 72.6 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 Rock Elementary and Diamond Bar High?
About 1.2 km in a straight line, between Diamond Bar and Diamond Bar in California.
Which has the better Enrollment?
Castle Rock Elementary: 684. Diamond Bar High: 2,563. Students enrolled in the latest NCES directory year.
How do Castle Rock Elementary and Diamond Bar High rank in California?
Castle Rock Elementary is 665th of 5,693 and Diamond Bar High is 61st of 1,343 among elementary schools in California on the 2025 Success Index (US).