Concord International School vs Rainier Prep
A head-to-head comparison of two schools in Washington, United States, 1.4 km apart, using official American 2025 data. The better value in each row is highlighted.
Concord International School
Seattle · Public elementary · Grades PK–5
268 students
Rainier Prep
Seattle · Charter middle · Grades 5–8
359 students
| Measure | Concord International School Seattle, Washington | Rainier Prep Seattle, Washington |
|---|---|---|
| Success Index (US) | 34 Lower 50% | 60 Top 50% |
| State rank | #990 of 1,154 | #136 of 363 |
| National rank | #35767 of 50,301 | #5420 of 15,369 |
| Sector | Public | Charter |
| Type | Elementary | Middle |
| Year range | Grades PK–5 | Grades 5–8 |
| Students | 268 | 359 |
| Enrollment | 268 | 359 |
| Free/reduced-price lunch | 51.1% | 74.1% |
| Students per teacher | 11.7 | 15.0 |
| Reading proficiency | 27% | 61% |
| Math proficiency | 22% | 62% |
| city | Seattle | Seattle |
| state | Washington | Washington |
| Website | – | – |
The verdict
- •Rainier Prep scores higher on the Success Index (US) (60.3 vs 34.2).
- •Rainier Prep does better on math proficiency (62% vs 22%).
- •Rainier Prep does better on reading proficiency (61% vs 27%).
- •Concord International School does better on community advantage (fewer free/reduced-price lunch) (51.1% vs 74.1%).
- •Concord International School does better on students per teacher (11.7 vs 15.0).
- •Rainier Prep is the larger school with 359 students compared with 268.
- •Concord International School is a public school while Rainier Prep 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 Concord International School better than Rainier Prep?
On the Success Index (US), Rainier Prep ranks higher (60.3 vs 34.2 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 Concord International School and Rainier Prep?
About 1.4 km in a straight line, between Seattle and Seattle in Washington.
Which has the better Enrollment?
Concord International School: 268. Rainier Prep: 359. Students enrolled in the latest NCES directory year.
How do Concord International School and Rainier Prep rank in Washington?
Concord International School is 990th of 1,154 and Rainier Prep is 136th of 363 among elementary schools in Washington on the 2025 Success Index (US).