Alder Elementary School vs Centennial Middle School
A head-to-head comparison of two schools in Oregon, United States, 1.8 km apart, using official American 2025 data. The better value in each row is highlighted.
Alder Elementary School
Portland · Public elementary · Grades K–5
340 students
Centennial Middle School
Portland · Public middle · Grades 6–8
876 students
| Measure | Alder Elementary School Portland, Oregon | Centennial Middle School Portland, Oregon |
|---|---|---|
| Success Index (US) | 14 Lower 50% | 29 Lower 50% |
| State rank | #651 of 678 | #160 of 208 |
| National rank | #48195 of 50,301 | #12157 of 15,369 |
| Sector | Public | Public |
| Type | Elementary | Middle |
| Year range | Grades K–5 | Grades 6–8 |
| Students | 340 | 876 |
| Enrollment | 340 | 876 |
| Free/reduced-price lunch | 98.8% | 102.2% |
| Students per teacher | 13.1 | 20.4 |
| Reading proficiency | 14% | 48% |
| Math proficiency | 9% | 37% |
| city | Portland | Portland |
| state | Oregon | Oregon |
| Website | – | – |
The verdict
- •Centennial Middle School scores higher on the Success Index (US) (28.7 vs 13.7).
- •Centennial Middle School does better on math proficiency (37% vs 9%).
- •Centennial Middle School does better on reading proficiency (48% vs 14%).
- •Alder Elementary School does better on community advantage (fewer free/reduced-price lunch) (98.8% vs 102.2%).
- •Alder Elementary School does better on students per teacher (13.1 vs 20.4).
- •Centennial Middle School is the larger school with 876 students compared with 340.
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 Alder Elementary School better than Centennial Middle School?
On the Success Index (US), Centennial Middle School ranks higher (28.7 vs 13.7 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 Alder Elementary School and Centennial Middle School?
About 1.8 km in a straight line, between Portland and Portland in Oregon.
Which has the better Enrollment?
Alder Elementary School: 340. Centennial Middle School: 876. Students enrolled in the latest NCES directory year.
How do Alder Elementary School and Centennial Middle School rank in Oregon?
Alder Elementary School is 651st of 678 and Centennial Middle School is 160th of 208 among elementary schools in Oregon on the 2025 Success Index (US).