Delta Charter vs Rio del Mar Elementary
A head-to-head comparison of two schools in California, United States, 5.2 km apart, using official American 2025 data. The better value in each row is highlighted.
Delta Charter
Aptos · Charter high · Grades 9–12
113 students
Rio del Mar Elementary
Aptos · Public elementary · Grades K–6
393 students
| Measure | Delta Charter Aptos, California | Rio del Mar Elementary Aptos, California |
|---|---|---|
| Success Index (US) | 33 Lower 50% | 72 Top 25% |
| State rank | #747 of 1,343 | #731 of 5,693 |
| National rank | #12565 of 16,910 | #10211 of 50,301 |
| Sector | Charter | Public |
| Type | High | Elementary |
| Year range | Grades 9–12 | Grades K–6 |
| Students | 113 | 393 |
| Enrollment | 113 | 393 |
| Free/reduced-price lunch | 38.9% | 22.1% |
| Students per teacher | 14.1 | 20.7 |
| Reading proficiency | 34.5% | 70% |
| Math proficiency | 10% | 63% |
| city | Aptos | Aptos |
| state | California | California |
| Website | – | – |
The verdict
- •Rio del Mar Elementary scores higher on the Success Index (US) (71.6 vs 33.4).
- •Rio del Mar Elementary does better on math proficiency (63% vs 10%).
- •Rio del Mar Elementary does better on reading proficiency (70% vs 34.5%).
- •Rio del Mar Elementary does better on community advantage (fewer free/reduced-price lunch) (22.1% vs 38.9%).
- •Delta Charter does better on students per teacher (14.1 vs 20.7).
- •Rio del Mar Elementary is the larger school with 393 students compared with 113.
- •Delta Charter is a charter school while Rio del Mar Elementary is a public 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 Delta Charter better than Rio del Mar Elementary?
On the Success Index (US), Rio del Mar Elementary ranks higher (71.6 vs 33.4 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 Delta Charter and Rio del Mar Elementary?
About 5.2 km in a straight line, between Aptos and Aptos in California.
Which has the better Enrollment?
Delta Charter: 113. Rio del Mar Elementary: 393. Students enrolled in the latest NCES directory year.
How do Delta Charter and Rio del Mar Elementary rank in California?
Delta Charter is 747th of 1,343 and Rio del Mar Elementary is 731st of 5,693 among high schools in California on the 2025 Success Index (US).