The Clatskanie School District (6J) is a two-school public school district in Columbia County, Oregon, United States. It serves the city of Clatskanie and the surrounding area.
Within Columbia County, it includes Clatskanie. Within Clatsop County the district includes Westport.
In the 2009 school year, the district had six students classified as homeless by the Department of Education, or 0.7% of students in the district.
At one time, there was a middle school and a high school, but they have merged into one school. The mascot for CMHS is the tigers, CES's mascot is the cougars, the former CMS mascot was the eagles.