Chinook Middle School
PublicMiddleGrades 6–8
18650 42nd Ave S, SeaTac, WA 98188 · (206) 631-5700 · Part of Highline School District
SeaTac’s School Grade C− better than 21% of Washington school districts
Students
620
Students per teacher
17:1
Free or reduced lunch
73%
Setting
Suburb
Grades
6–8
What stands out about Chinook Middle School
- Enrollment down 12.9% since 2020–21
- No state test results published for this school
- Next stop for SeaTac kids: Tyee High School
On the path
Where SeaTac kids come from and go next. The whole path →
PK–53 elementary schoolsDepends on your address
6–8Chinook Middle SchoolYou are here
9–12Tyee High School644 students
Location
Directions ↗18650 42nd Ave S, SeaTac
Students
Enrollment by grade
Grade 6205
Grade 7210
Grade 8205
Enrollment over time
712’20
608’21
599’22
603’23
620’24
Down 12.9% since 2020–21.
Who goes here
Hispanic 40%Black 19%Asian 16%White 11%Native Hawaiian/Pacific Islander 8%Two or more races 6%
As reported to NCES, share of students with a reported race or ethnicity.
Parents talk
Questions and answers about Chinook Middle School from SeaTac families.
Other schools in Highline School District
School facts: U.S. Department of Education (NCES), 2024–2025 school year. Map: © OpenStreetMap contributors.