Obsidian Middle vs Riviera Elementary
A head-to-head comparison of two schools in California, United States, 8.5 km apart, using official American 2025 data. The better value in each row is highlighted.
Obsidian Middle
Clearlake · Public middle · Grades 6–8
590 students
Riviera Elementary
Kelseyville · Public elementary · Grades K–5
287 students
| Measure | Obsidian Middle Clearlake, California | Riviera Elementary Kelseyville, California |
|---|---|---|
| Success Index (US) | 19 Lower 50% | 18 Lower 50% |
| State rank | #1001 of 1,334 | #4581 of 5,693 |
| National rank | #13977 of 15,369 | #45880 of 50,301 |
| Sector | Public | Public |
| Type | Middle | Elementary |
| Year range | Grades 6–8 | Grades K–5 |
| Students | 590 | 287 |
| Enrollment | 590 | 287 |
| Free/reduced-price lunch | 76.9% | 65.9% |
| Students per teacher | 22.7 | 22.1 |
| Reading proficiency | – | 27% |
| Math proficiency | – | 17% |
| city | Clearlake | Kelseyville |
| state | California | California |
| Website | – | – |
The verdict
- •Both schools have almost identical Success Index (US) scores (18.8 vs 18.4).
- •Riviera Elementary does better on community advantage (fewer free/reduced-price lunch) (65.9% vs 76.9%).
- •Riviera Elementary does better on students per teacher (22.1 vs 22.7).
- •Obsidian Middle is the larger school with 590 students compared with 287.
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 Obsidian Middle better than Riviera Elementary?
The two schools are very close on the Success Index (US). Differences in sector, size, programmes and distance from home will matter more than the score.
How far apart are Obsidian Middle and Riviera Elementary?
About 8.5 km in a straight line, between Clearlake and Kelseyville in California.
Which has the better Enrollment?
Obsidian Middle: 590. Riviera Elementary: 287. Students enrolled in the latest NCES directory year.
How do Obsidian Middle and Riviera Elementary rank in California?
Obsidian Middle is 1001st of 1,334 and Riviera Elementary is 4581st of 5,693 among middle schools in California on the 2025 Success Index (US).