Castle Rock High School is a rural public high school in Castle Rock, Washington.

Castle Rock is well below the state median both graduation rates and proficiency scores.

[citation needed] Castle Rock has a graduation rate of 80%.

47% are economically disadvantaged, with 48% forming part of the free or reduced lunch programs.

[3] Castle Rock is a member of the Washington Interscholastic Activities Association (WIAA) and competes in the Southwest Washington District 4 Trico 1A league.