Colony High vs Cosumnes Oaks High
A head-to-head comparison of two high schools in California, United States, 596 km apart, using official American 2025 data. The better value in each row is highlighted.
Colony High
Ontario · Public high · Grades 9–12
2,109 students
Cosumnes Oaks High
Elk Grove · Public high · Grades 9–12
2,109 students
| Measure | Colony High Ontario, California | Cosumnes Oaks High Elk Grove, California |
|---|---|---|
| Success Index (US) | 39 Lower 50% | 62 Top 50% |
| State rank | #612 of 1,343 | #214 of 1,343 |
| National rank | #11263 of 16,910 | #5307 of 16,910 |
| Sector | Public | Public |
| Type | High | High |
| Year range | Grades 9–12 | Grades 9–12 |
| Students | 2,109 | 2,109 |
| Enrollment | 2,109 | 2,109 |
| Free/reduced-price lunch | 69.7% | 38.9% |
| Students per teacher | 26.0 | 21.5 |
| Reading proficiency | 60% | 71% |
| Math proficiency | 35% | 53% |
| city | Ontario | Elk Grove |
| state | California | California |
| Website | – | – |
The verdict
- •Cosumnes Oaks High scores higher on the Success Index (US) (61.9 vs 38.7).
- •Cosumnes Oaks High does better on math proficiency (53% vs 35%).
- •Cosumnes Oaks High does better on reading proficiency (71% vs 60%).
- •Cosumnes Oaks High does better on community advantage (fewer free/reduced-price lunch) (38.9% vs 69.7%).
- •Cosumnes Oaks High does better on students per teacher (21.5 vs 26.0).
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 Colony High better than Cosumnes Oaks High?
On the Success Index (US), Cosumnes Oaks High ranks higher (61.9 vs 38.7 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 Colony High and Cosumnes Oaks High?
About 596 km in a straight line, between Ontario and Elk Grove in California.
Which has the better Enrollment?
Colony High: 2,109. Cosumnes Oaks High: 2,109. Students enrolled in the latest NCES directory year.
How do Colony High and Cosumnes Oaks High rank in California?
Colony High is 612th of 1,343 and Cosumnes Oaks High is 214th of 1,343 among high schools in California on the 2025 Success Index (US).