The Brewster girls' lacrosse program began in 1985 and attracts about 40 girls who participate each year at either the varsity or junior varsity level. Both teams play a full schedule against other teams in the Lakes Region League. The season begins in March and runs through the end of May. Game days are Wednesday and Saturday with four practices a week. Each year players have the opportunity to play in the Lakes Region Classic Game and to be nominated as a Lakes Region League All Star. Other special awards are given at the spring athletics sports banquet.

Players have individual goals that are a part of their decision to play; however, a team goal is to help each member of the team develop an appreciation for the sport while contributing to the best of their ability. The program's goals are to have fun while maintaining fitness, building skills, and developing game strategy. Players graduating from Brewster often stay involved with the sport at a competitive or club level.