The current site of Braintree High School, located adjacent to Sunset Lake, opened in 1972.

The name as well as all the various images used through out time by the towns people , and the sports teams associated onto it are meant and intended to be solely for enjoyment and entertainment purposes so as all may reflect "100 percent” in a positive and honorary way upon the communities vast local history and are derived from the Massachusetts Indian Chief known as Wampatuck, who ceded land to colonists through the "Braintree Indian Deed" in 1665.

According to Massachusetts Department of Elementary and Secondary Education annual statistics, for the 2018-2019[16] academic year, the demographic enrollment distributions for race, gender and grade level at Braintree High School are as follows:

Braintree High is a member of the Bay State Conference, a league in District C of the Massachusetts Interscholastic Athletic Association.

There have been several other state champions produced by BHS in the past several years, most notably in girls' athletics.

[20] In back-to-back years the Girls Basketball team won state championships in 2014 and went undefeated in 2015.