Thunder Mountain High School

Thunder Mountain High School is one of three public high schools in Juneau, Alaska; it opened in August 2008. In its first year in operation it served grades 9–11; thus seniors (grade 12 students) in the Juneau School District (grade 12) finished high school at their existing 9-12 schools. Thunder Mountain Middle School is located in the Mendenhall Valley section of Juneau and draws most of its students from this area, although under an open enrollment policy, all high school students in the district may attend any of the three high schools.

In August 2009, TMMS became an official a member of the Alaska School Activities Association and competes inter-scholastically with other schools in the state in athletic events and academic activities. For athletics, Thunder Mountain is classified as 4A, which includes the largest high schools in the state.

For 2022 580 students were enrolled.

Sports
Fall Sports:

Football, Football Cheer, Cross Country Running, Tennis, Swim/Dive, Volleyball, Dance, Rifle, Drama Debate and Forensics, Robotics, Wrestling

Winter Sports:

Basketball, Basketball Cheer, Pep Band