Decker Elementary vs Diamond Ranch High
A head-to-head comparison of two schools in California, United States, 1.7 km apart, using official American 2025 data. The better value in each row is highlighted.
Decker Elementary
Pomona · Public elementary · Grades K–6
437 students
Diamond Ranch High
Pomona · Public high · Grades 9–12
1,542 students
| Measure | Decker Elementary Pomona, California | Diamond Ranch High Pomona, California |
|---|---|---|
| Success Index (US) | 23 Lower 50% | 43 Lower 50% |
| State rank | #4017 of 5,693 | #520 of 1,343 |
| National rank | #42925 of 50,301 | #10304 of 16,910 |
| Sector | Public | Public |
| Type | Elementary | High |
| Year range | Grades K–6 | Grades 9–12 |
| Students | 437 | 1,542 |
| Enrollment | 437 | 1,542 |
| Free/reduced-price lunch | 76.4% | 78.7% |
| Students per teacher | 19.0 | 22.7 |
| Reading proficiency | 36% | 71% |
| Math proficiency | 26% | 36% |
| city | Pomona | Pomona |
| state | California | California |
| Website | – | – |
The verdict
- •Diamond Ranch High scores higher on the Success Index (US) (42.6 vs 23.0).
- •Diamond Ranch High does better on math proficiency (36% vs 26%).
- •Diamond Ranch High does better on reading proficiency (71% vs 36%).
- •Decker Elementary does better on community advantage (fewer free/reduced-price lunch) (76.4% vs 78.7%).
- •Decker Elementary does better on students per teacher (19.0 vs 22.7).
- •Diamond Ranch High is the larger school with 1,542 students compared with 437.
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 Decker Elementary better than Diamond Ranch High?
On the Success Index (US), Diamond Ranch High ranks higher (42.6 vs 23.0 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 Decker Elementary and Diamond Ranch High?
About 1.7 km in a straight line, between Pomona and Pomona in California.
Which has the better Enrollment?
Decker Elementary: 437. Diamond Ranch High: 1,542. Students enrolled in the latest NCES directory year.
How do Decker Elementary and Diamond Ranch High rank in California?
Decker Elementary is 4017th of 5,693 and Diamond Ranch High is 520th of 1,343 among elementary schools in California on the 2025 Success Index (US).