Chinook Middle School was built in 1961 on 35.6 acres. In 2008 early site work was completed for an extensive upgrade, including the addition of an 8-classroom modular building. In 2009–2010, a major modernization and addition was completed, utilizing 2006 bond and state assistance funds. A prominent, inviting main entry was created, allowing an abundance of natural light to shine through. The interior and exterior of the building were modernized, the commons and food services area was enlarged and illuminated with natural light, a state-of-the-art kitchen was created, all mechanical, electrical and technology were replaced or upgraded, and selective roof upgrades were completed. The 86,764 square foot building, including 36 instructional spaces, plus 17 portable classrooms (including 8 classroom modular buildings) serve sixth through eighth grade.
