Mossdale Elementary vs River Islands High
A head-to-head comparison of two schools in California, United States, 4.2 km apart, using official American 2025 data. The better value in each row is highlighted.
Mossdale Elementary
Lathrop · Public elementary · Grades K–8
1,087 students
River Islands High
Lathrop · Charter high · Grades 9–12
512 students
| Measure | Mossdale Elementary Lathrop, California | River Islands High Lathrop, California |
|---|---|---|
| Success Index (US) | 43 Lower 50% | 52 Top 50% |
| State rank | #2291 of 5,693 | #358 of 1,343 |
| National rank | #29681 of 50,301 | #7856 of 16,910 |
| Sector | Public | Charter |
| Type | Elementary | High |
| Year range | Grades K–8 | Grades 9–12 |
| Students | 1,087 | 512 |
| Enrollment | 1,087 | 512 |
| Free/reduced-price lunch | 59.6% | 37.9% |
| Students per teacher | 27.2 | 19.0 |
| Reading proficiency | 57% | – |
| Math proficiency | 41% | – |
| city | Lathrop | Lathrop |
| state | California | California |
| Website | – | – |
The verdict
- •River Islands High scores higher on the Success Index (US) (52.0 vs 43.4).
- •River Islands High does better on community advantage (fewer free/reduced-price lunch) (37.9% vs 59.6%).
- •River Islands High does better on students per teacher (19.0 vs 27.2).
- •Mossdale Elementary is the larger school with 1,087 students compared with 512.
- •Mossdale Elementary is a public school while River Islands High is a charter school, so fees and admission rules differ.
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 Mossdale Elementary better than River Islands High?
On the Success Index (US), River Islands High ranks higher (52.0 vs 43.4 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 Mossdale Elementary and River Islands High?
About 4.2 km in a straight line, between Lathrop and Lathrop in California.
Which has the better Enrollment?
Mossdale Elementary: 1,087. River Islands High: 512. Students enrolled in the latest NCES directory year.
How do Mossdale Elementary and River Islands High rank in California?
Mossdale Elementary is 2291st of 5,693 and River Islands High is 358th of 1,343 among elementary schools in California on the 2025 Success Index (US).