Chinook Middle School
No overall score. Washington results are shown as published by OSPI. We are not showing scores for Washington schools until OSPI confirms its licence allows them. How we score schools
Performance (state tests, 2025-26)
% meeting standard on state tests in Washington, all students. Colored bars are green when the school is at or above the average for similar Washington schools.
Results over time
How this school's published results have moved year by year.
All 20 published results by grade and test
As published by Office of Superintendent of Public Instruction (OSPI). "Hidden" means the state didn't publish the result to protect student privacy.
| Subject | Grade | Test | Result | Students tested |
|---|---|---|---|---|
| English language arts | Grade 6 | AIM | hidden (small group) | — |
| English language arts | Grade 7 | AIM | hidden (small group) | — |
| English language arts | Grade 8 | AIM | hidden (small group) | — |
| English language arts | All grades | AIM | banded | — |
| English language arts | Grade 6 | SBAC | 26.9 | 167 |
| English language arts | Grade 7 | SBAC | 28.3 | 198 |
| English language arts | Grade 8 | SBAC | 32.5 | 209 |
| English language arts | All grades | SBAC | 29.4 | 574 |
| Math | Grade 6 | AIM | hidden (small group) | — |
| Math | Grade 7 | AIM | hidden (small group) | — |
| Math | Grade 8 | AIM | hidden (small group) | — |
| Math | All grades | AIM | banded | — |
| Math | Grade 6 | SBAC | 13.2 | 167 |
| Math | Grade 7 | SBAC | 12.7 | 197 |
| Math | Grade 8 | SBAC | 20.6 | 204 |
| Math | All grades | SBAC | 15.7 | 568 |
| Science | Grade 8 | AIM | hidden (small group) | — |
| Science | All grades | AIM | hidden (small group) | — |
| Science | Grade 8 | WCAS | 33.3 | 210 |
| Science | All grades | WCAS | 33.3 | 210 |
School profile
- Grades
- 6-8
- Students
- 603
- Type
- Middle school
- Charter school
- No
- Program
- Regular
Students
District and location
Contact
SeaTac, WA 98188
"Typical" is the middle (median) middle school in Washington. Higher or lower is not in itself better or worse. Address, phone and website are as the state reported them to the U.S. Department of Education for 2024-25, so check with the school before visiting. School details: U.S. Department of Education, Common Core of Data (enrollment 2023-24, lunch eligibility 2024-25).
Nearby middle schools
Straight-line distance. Check the district's attendance zones: living close to a school doesn't guarantee a place.
Explore schools around SeaTac
Location
Official sources
Every figure on this page comes from published government data. Check the originals here; we refresh when states release new results.
Washington data: Office of Superintendent of Public Instruction, licensed under CC BY-ND 4.0 and shown unchanged.
U.S. Department of Education, National Center for Education Statistics, Common Core of Data (CCD): school directory, grades served, enrollment and free/reduced-price lunch, 2023-24 and 2024-25. Spotted a mistake? Tell us.
Chinook Middle School at a glance
Chinook Middle School is a public middle school in SeaTac, Washington, serving grades 6-8. It is part of Highline School District. It has about 603 students (a typical Washington middle school has 607). About 75% of students are eligible for free or reduced-price lunch, compared with 52% at a typical Washington middle school, which is useful context when reading test results.
In 2025-26 state tests, 29% in English language arts (similar schools: 49%) and 16% in math (similar schools: 38%) reached the state standard (% meeting standard). Its English language arts result fell by 4 points from the year before. This overview is generated automatically from published state and federal data; figures are rounded, and you can check the originals via the official sources above.
Page updated 2026-10-12.