Mountlake Terrace High School

Mountlake Terrace is a registered Project Lead the Way magnet school. This national program aims to educate middle and high schoolers in STEM curriculum.[4] The school offers engineering and robotics classes for college and university level credit if an AP exam is taken. The school offers college-level engineering classes that offer college credit through the College in the High School program at local Edmonds Community College. The school also offers several Advanced Placement classes.

In September 2003 the school reorganized under five "small schools,"[5] each with a specific emphasis: the Terrace Academy of Arts and Sciences; the Discovery School; the Innovation School; the Renaissance School; and the Achievement, Opportunity and Scholarship School. The school received a $833,000 grant in return for their participation.[6] The effort was met with mixed reactions.[7] Students were to stay in a school until their junior year, or to file a petition with a school administrator to transfer between programs. The "small schools" program ended in 2008, after which MTHS returned to a traditional high school format.

Mountlake Terrace has an active leadership program that organizes and promotes events relating to the school. The Executive ASB, known as "The Big 6", consists of the President, Vice President, Secretary, Treasurer, Public Relations, and Historian. The Big 6 functions as the team of student leaders tasked with developing, planning, and implementing events that build positive school community and spirit such as fundraisers, community service, assemblies, and school dances.

The Mountlake Terrace Theatre Department is a well-recognized program at the local, regional, state, and national levels. The Theatre program has represented Washington state at the International Thespian Festival, an international competition and conference, on three separate occasions.

There are two concert bands and two jazz bands, as well as a percussion ensemble, one choir, and two orchestras. The upper-level concert band, Chamber Winds, is a regular attendee at music festivals such as the University of Washington Music Festival and Central Washington University's music festival. They also toured Europe in 2008. The school's upper jazz band, Jazz 1, has attended Jazz at Lincoln Center's Essentially Ellington Jazz Festival and Competition in New York in 2000, 2002, 2005, 2008, 2011, 2012, 2017, 2018 and 2020; they placed third in the competition in 2005 and in 2011. They also received an honorable mention in 2002.[8] The jazz band has gone on several European tours. The top jazz choir, Dynamics, was a winner of the Lionel Hampton Jazz Festival in Idaho in 2007, the third win in a row for the choir.

The school hosts FIRST Robotics Competition (FRC) team "Chill Out".[9] The team was founded in 2006, and participated in FRC every year except 2021 due to the COVID-19 pandemic. Chill Out participated in the FIRST Robotics World Championships in Houston, Texas in 2006, 2012, 2017 and 2018.[10]

The Technology Student Association (TSA) club at Mountlake Terrace HS boasts the largest highschool chapter in the state of Washington. At the 2022 WTSA conference, the chapter won first place in Animatronics, Dragster Design, Technology Bowl, and Structural Design in a sweep.[11]