Debate Lexington High School has a
debate program consisting of three divisions:
Lincoln–Douglas,
Policy, and
Public Forum, all taught as elective courses. LHS has won all three major divisions at the
Tournament of Champions (TOC). It has also had winners or runners-up at
National Catholic Forensic League, National Debate Coaches Association, and
National Speech and Debate Association. As of 2019, Lexington's debate team has won both the Policy division and the Sweepstakes Award at the State Championship for the last 45 years. Lexington won the Policy division at the TOC in 1994. A Lexington team won the TOC in the Public Forum division in 2007. In 2020, Lexington again won the TOC in Lincoln-Douglas. Lexington has won top speakers awards at the NDCA in Lincoln-Douglas (2012) and Public Forum (2017), and at the TOC in Policy (1986, 1995). In 2022, she was inducted into the Tournament of Champions hall of fame.
Chess The Lexington High School chess team won the Massachusetts State Chess Championship in 2011, 2013, and 2014. In 2009, the team placed 2nd in the freshman section of the annual National K-12 Scholastic Championship in
Dallas,
Texas. In 2010, the team placed 2nd in the Rhode Island State Championship.
Science Lexington High School competes in the
National Science Bowl,
National Ocean Sciences Bowl,
Envirothon, and
Science Olympiad. In the National Science Bowl, LHS has placed first five times, tying with
Mira Loma High School for the most first-place finishes. In the National Ocean Sciences Bowl, LHS won the national competition between 1998 and 2002, the first five years of the competition's existence, giving it more wins than any other school. LHS won the Envirothon in 2022 and 2023. ==Athletics and sports==