Greenbriar West Elementary vs Rocky Run Middle
A head-to-head comparison of two schools in Virginia, United States, 466 m apart, using official American 2025 data. The better value in each row is highlighted.
Greenbriar West Elementary
Fairfax · Public elementary · Grades PK–6
630 students
Rocky Run Middle
Chantilly · Public middle · Grades 7–8
882 students
| Measure | Greenbriar West Elementary Fairfax, Virginia | Rocky Run Middle Chantilly, Virginia |
|---|---|---|
| Success Index (US) | 91 Top 5% | 90 Top 5% |
| State rank | #52 of 1,142 | #41 of 340 |
| National rank | #518 of 50,301 | #322 of 15,369 |
| Sector | Public | Public |
| Type | Elementary | Middle |
| Year range | Grades PK–6 | Grades 7–8 |
| Students | 630 | 882 |
| Enrollment | 630 | 882 |
| Free/reduced-price lunch | 20.8% | 19.6% |
| Students per teacher | 13.7 | 15.2 |
| Reading proficiency | 90% | 93% |
| Math proficiency | 93% | 93% |
| city | Fairfax | Chantilly |
| state | Virginia | Virginia |
| Website | – | – |
The verdict
- •Greenbriar West Elementary scores higher on the Success Index (US) (91.3 vs 89.5).
- •Rocky Run Middle does better on reading proficiency (93% vs 90%).
- •Rocky Run Middle does better on community advantage (fewer free/reduced-price lunch) (19.6% vs 20.8%).
- •Greenbriar West Elementary does better on students per teacher (13.7 vs 15.2).
- •Rocky Run Middle is the larger school with 882 students compared with 630.
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 Greenbriar West Elementary better than Rocky Run Middle?
On the Success Index (US), Greenbriar West Elementary ranks higher (91.3 vs 89.5 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 Greenbriar West Elementary and Rocky Run Middle?
About 466 m in a straight line, between Fairfax and Chantilly in Virginia.
Which has the better Enrollment?
Greenbriar West Elementary: 630. Rocky Run Middle: 882. Students enrolled in the latest NCES directory year.
How do Greenbriar West Elementary and Rocky Run Middle rank in Virginia?
Greenbriar West Elementary is 52nd of 1,142 and Rocky Run Middle is 41st of 340 among elementary schools in Virginia on the 2025 Success Index (US).