Chinook Middle School
🇺🇸 Official data · 2025SeaTac, Washington 98188 · Highline School District
#282 of 363 middle schools in Washington
#10286 of 15,369 nationally
About Chinook Middle School
Chinook Middle School is a public middle located in SeaTac, in the Highline School District school district of Washington, United States. It caters for Grades 6–8. In 2025 it enrolled 620 students. Traditional public schools run by a school district; free to attend.
Its Success Index (US) is 37.9 out of 100, placing it in the lower 50% of middle schools in United States and 282nd of 363 ranked middle schools in Washington. Its strongest component is reading proficiency (62th percentile), and its weakest is math proficiency (25th percentile).
Other published figures: enrollment 620.
There are 8 schools in SeaTac; Chinook Middle School ranks 2nd of 7 scored schools there.
Success Index (US) breakdown
Each component is a percentile against middle schools across United States.
- Math proficiency (30%)29%
- Reading proficiency (30%)55%
- Community advantage (fewer free/reduced-price lunch) (25%)72.9%
- Students per teacher (15%)17.7
The Success Index (US) summarises published data about a school community. It is not a measure of teaching quality. Read the methodology.
Published measures
All figures published for Chinook Middle School by the official sources.
- Enrollment
- 620
- Students enrolled in the latest NCES directory year.
- Free/reduced-price lunch
- 72.9%
- Share of students eligible for free or reduced-price lunch.
- Students per teacher
- 17.7
- Enrollment divided by FTE teachers; not class size.
- Reading proficiency
- 55%
- Share of tested students proficient or above (all students, all grades).
- Math proficiency
- 29%
- Share of tested students proficient or above (all students, all grades).
Free academic assessment
Is your child on grade level in reading and math?
Success Tutoring offers personalised English and math tutoring from Kindergarten to Grade 12. Start with a free online assessment and a clear plan for the year ahead.
- Personalised learning plan mapped to the Australian Curriculum
- English & Maths from Kindergarten to Year 12
- Flexible memberships, no lock-in contracts
- Centres across NSW, VIC, QLD, WA, SA and ACT
Schools near Chinook Middle School
Closest schools by straight-line distance, with their Success Index (US).
Tyee High School
SeaTac · Public high · Grades 9–12
644 students · 237 m away
Bow Lake Elementary
SeaTac · Public elementary · Grades PK–5
524 students · 462 m away
Valley View Early Childhood Center
SeaTac · Public other · Grades PK–PK
225 students · 1.1 km away
Madrona Elementary
SeaTac · Public elementary · Grades PK–5
317 students · 1.9 km away
McMicken Heights Elementary
SeaTac · Public elementary · Grades PK–5
484 students · 2.0 km away
Thorndyke Elementary
Seattle · Public elementary · Grades PK–5
386 students · 3.7 km away
North Hill Elementary
Des Moines · Public elementary · Grades PK–5
518 students · 3.7 km away
Maritime High School
Des Moines · Public high · Grades 9–12
126 students · 3.8 km away
River Ridge Elementary
SeaTac · Public elementary · Grades PK–5
697 students · 3.9 km away
Impact Public Schools
Tukwila · Charter elementary · Grades K–5
505 students · 4.0 km away
Similar schools
Public middle schools in Washington with a comparable Enrollment.
Frontier Middle School
Graham · Public middle · Grades 6–8
620 students
Fairview Middle School
Bremerton · Public middle · Grades 6–8
620 students
Anacortes Middle School
Anacortes · Public middle · Grades 6–8
617 students
Marcus Whitman Middle School
Port Orchard · Public middle · Grades 6–8
623 students
Westwood Middle School
Spokane · Public middle · Grades 6–8
624 students
Cougar Mountain Middle School
Issaquah · Public middle · Grades 6–8
616 students
Frequently asked questions
Is Chinook Middle School a good school?
Chinook Middle School has a Success Index (US) of 37.9 out of 100 (Lower 50% of middle schools in United States) and ranks #282 of 363 in Washington. The index summarises published data about the school community and, where available, attainment; it does not measure teaching quality, so visit the school and ask about support at your child's level.
Where does Chinook Middle School rank in Washington?
Chinook Middle School ranks #282 of 363 middle schools in Washington and #10286 of 15,369 nationally on the Success Index (US) (2025 data).
How many students attend Chinook Middle School?
Chinook Middle School had 620 students in 2025.
Is Chinook Middle School a elementary school or a high school?
Chinook Middle School is classified as a middle covering Grades 6–8. It is a public school.
What other schools are near Chinook Middle School?
There are 10 schools within 15 km of Chinook Middle School; they are listed on this page with their Success Index (US) and distance, and can be compared side by side.