Armstrong Elementary vs Quail Summit Elementary
A head-to-head comparison of two elementary schools in California, United States, 2.9 km apart, using official American 2025 data. The better value in each row is highlighted.
Armstrong Elementary
Diamond Bar · Public elementary · Grades K–6
251 students
Quail Summit Elementary
Diamond Bar · Public elementary · Grades K–5
696 students
| Measure | Armstrong Elementary Diamond Bar, California | Quail Summit Elementary Diamond Bar, California |
|---|---|---|
| Success Index (US) | 50 Lower 50% | 78 Top 25% |
| State rank | #1914 of 5,693 | #390 of 5,693 |
| National rank | #25279 of 50,301 | #6210 of 50,301 |
| Sector | Public | Public |
| Type | Elementary | Elementary |
| Year range | Grades K–6 | Grades K–5 |
| Students | 251 | 696 |
| Enrollment | 251 | 696 |
| Free/reduced-price lunch | 66.9% | 25% |
| Students per teacher | 19.3 | 25.8 |
| Reading proficiency | 67% | 81% |
| Math proficiency | 42% | 79% |
| city | Diamond Bar | Diamond Bar |
| state | California | California |
| Website | – | – |
The verdict
- •Quail Summit Elementary scores higher on the Success Index (US) (77.9 vs 49.8).
- •Quail Summit Elementary does better on math proficiency (79% vs 42%).
- •Quail Summit Elementary does better on reading proficiency (81% vs 67%).
- •Quail Summit Elementary does better on community advantage (fewer free/reduced-price lunch) (25% vs 66.9%).
- •Armstrong Elementary does better on students per teacher (19.3 vs 25.8).
- •Quail Summit Elementary is the larger school with 696 students compared with 251.
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 Armstrong Elementary better than Quail Summit Elementary?
On the Success Index (US), Quail Summit Elementary ranks higher (77.9 vs 49.8 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 Armstrong Elementary and Quail Summit Elementary?
About 2.9 km in a straight line, between Diamond Bar and Diamond Bar in California.
Which has the better Enrollment?
Armstrong Elementary: 251. Quail Summit Elementary: 696. Students enrolled in the latest NCES directory year.
How do Armstrong Elementary and Quail Summit Elementary rank in California?
Armstrong Elementary is 1914th of 5,693 and Quail Summit Elementary is 390th of 5,693 among elementary schools in California on the 2025 Success Index (US).