Clubs and societies Somerville High School students participate in a wide range of self-run extracurricular clubs and societies. Competitive clubs include its Trivia Team, Science League, and a
FIRST Robotics Competition team: FRC 6201 The Highlanders. The Trivia team has sent students to compete at WGBH's High School Quiz Show. They have competed on the show seven times, most recently in 2025 on Season 16. FRC 6201 The Highlanders have accomplished many achievements and have won many awards since their rookie year in 2016. Some of their most notable achievements include being the 2nd seed alliance captain and finalist at the 2025 NE District Greater Boston Event with their robot named Plunk. They also won the 2023 NE District North Shore Event with their robot named Yoink, as well as back-to-back Team Spirit awards at both their competitions in 2023. In 2017, they also went to the FIRST World Championship in
St. Louis, Missouri where they won the Creativity Award.
Student publications Somerville High School publishes an online student newspaper,
Highlander News.
Sports Somerville High School has a sports program, highlighted by the recent success of its Cross Country team, that went 6–0 in the
Greater Boston League in 2007, 2008, 2009 and 2010, capturing the GBL championship each season. The girls' indoor track team was successful, going undefeated and also capturing the GBL indoor track championship in the 2007–08 through 2010 seasons. Somerville High's outdoor track team also won the GBL Championships, with an undefeated winning streak for the 2008 through 2011 seasons. The Football and Basketball Cheerleading team captured the National Championship title in Florida both in 2003 and in 2007, and has won the GBL title numerous times.
Gosder Cherilus earned
Boston Globe and
Boston Herald All-Scholastic honors as a senior at Somerville High School. He played tackle on both sides of the ball, and was named to Tom Lemming's All-America team in 2002. He also captured 2002 All-State accolades from the Mass. State Coaches Association. Cherilus also excelled on Somerville's basketball and track teams, and was selected with the 17th overall pick in the
2008 NFL draft by the
Detroit Lions.
Theater Highlander Theatre Company is Somerville High School's theater department. Highlander Theatre Company usually presents three productions per year: a musical, a full-length play, and a student-run fringe festival. Students participate as actors, crew, student
directors,
stage managers, and more. All sets, lights, and sound for productions are designed and operated by students. In response to the
COVID-19 pandemic, the 2020–2021 season was changed to feature a full-length play, multiple works written and/or directed by students, and a one-act musical. Performances took place virtually, using both video conferencing technology and pre-recorded techniques. A modified three-show season would run for the 2021–2022 school year, signalling Highlander Theatre Company's return to in-person theatre. ==Guinness World Record==