Timberlake High School is a four-year public secondary school in Spirit Lake, Idaho.

Opened in 1998 at the south end of town, it is the second high school in the Lakeland Joint School District #272 of northern Kootenai County and draws its students from Spirit Lake, Athol, Bayview, and Twin Lakes.

Timberlake originally was six grades and included grades 7 and 8; a separate junior high was built on the north end of the campus and opened in 2004.

The Lakeland Joint School District was formed in 1948[5] by consolidating 13 smaller districts;[6] In 1962, the high schools in Spirit Lake and Rathdrum were consolidated into the new Lakeland High School in Rathdrum.

Timberlake competes in athletics in IHSAA Class 3A[4] and is a member of the Intermountain League with Bonners Ferry, Priest River, and Kellogg.