KSD is a suburban school district with 13 schools. For the 2026-2027 school year, classes begin August 26 and end June 11. Kelso High School, established in 1905 as Washington School, graduated its 100th senior class in 2008 and fields teams known as the Hilanders and Lassies. The district has said a complete 2026-2027 calendar — including early dismissal dates — will be published soon.
Also known as KSD.