Braintree High is a member of the
Bay State Conference, a league in
District C of the
Massachusetts Interscholastic Athletic Association. They have traditional rivalries with
Milton High School, including the annual
football game on Thanksgiving Day, and
Weymouth High School. Recently the Boys' Gymnastics squad has consistently repeated as champions of the BSC while the Cheerleading squad competes on the national stage. There have been several other state champions produced by BHS in the past several years, most notably in girls' athletics. The Lady Wamps Basketball team won the state title for the 2005–06 fall season, while the Soccer team won in both 2005 and again in 2006. The boys ice hockey team made its first appearance in the
Super 8 Ice Hockey Tournament in 2014, but lost to
Catholic Memorial School in the play-in game, 2–1. In back-to-back years the Girls Basketball team won state championships in 2014 and went undefeated in 2015. The Braintree High Dance Team has dominated conference and state championships for over a decade, including multiple New England championships. The Varsity baseball team won the
Super Eight baseball tournament in 2015, after previously losing to
Newton North High School in 2014s final. The Wamps beat
St. John's Preparatory School 7–3 after dropping the first game 20–4. The name of the field that Braintree Baseball plays at is Veterans Stadium. The football team and occasionally the soccer and lacrosse teams play at an
artificial turf field named Alumni Stadium. The Braintree High gymnasium is named H. Fred Hegret Gymnasium. The golf team plays its home events at Braintree Municipal Golf Course. The gymnastics room is named Shuhwerk Gymnastics Room. The Braintree Athletic Complex is a planned athletic complex that will be located at Braintree High School. ==Notable alumni==