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Chinook Middle School
18650 42nd Avenue South SeaTac, WA 98188

Office Hours:

Monday-Friday: 7:30 a.m. - 3:30 p.m.

Chinook Middle School
18650 42nd Avenue South SeaTac, WA 98188

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Welcome to Chinook Middle School

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Students in class
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Upcoming Events

Latest News

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Time to start planning! Here is a look at the tentative 2022-23 school calendar. The calendar will be final after Highline Education Association (HEA) members vote on it in August. At this time, the first day of preschool is to be determined.

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Help us ELEVATE at our 2022 Equity Symposium on August 23. Share your Highline story or equity work by speaking in our opening session or presenting at a breakout session. Students, families, and community presenters will receive a $100 honorarium. Sessions will be held virtually. 

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Is your child up-to-date on their childhood immunizations? We are partnering with Stepping Stone Pediatrics to host two immunization clinics for students on May 21 and June 10. 

2022 gold start winners

The winners are.... The Highline Schools Foundation announces the winners of its 2022 Gold Star Awards, highlighting the outstanding efforts of educators, staff, volunteers and others in Highline. These seven extraordinary individuals live and breathe our Highline promise to know all students by name, strength and need.

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The Enrollment Team is available to support you with enrolling a new student or activating your ParentVUE account for a current student. Support events are scheduled for a virtual event on March 29 and an in-person event on April 22 at Central Office.

Our Vision

Together we create and sustain a culture of achievement where all students excel!

Explore our Vision