The Brooks boys varsity lacrosse team is a program built on the principles of discipline, leadership, and sportsmanship. Led by head Coach Ian Speliotis, a 2014 graduate of the school and a former captain of the team, the program aims to develop players to their fullest potential both on and off the field, giving the players confidence and competence for the challenges that they will face beyond Brooks.

In the last 10 years, members of the team have gone on to play collegiate lacrosse at various schools across varying divisions. The list includes athletes at Denver University, Dartmouth College, Boston University, Fairfield University, Providence College, College of the Holy Cross, the University of Massachusetts - Lowell, Gettysburg College, Tufts University, Connecticut College, St. Lawrence University, Denison College, and many more.

As a member of the Independent School League, Brooks is fortunate to be a part of one of the most competitive high school lacrosse leagues in the nation. The 16 team league features nationally ranked programs every single year, with a champion crowned only after the top eight teams in the league battle it out in a tournament for ISL glory.