2009-10: Brendan Collier was the third leading scorer for Malden Catholic HS in Massachusetts as a sophomore. He was second on the team with 19 goals, behind Mike Vecchione (25) and had 43 assists.
2010-11: Collier was one of Malden Catholic's top scorers as the team captured the Super Eight Massachusetts high school championship. Collier scored 30 goals with 45 assists in 25 games. He committed to playing college hockey at Boston University in 2013-14.
2011-12: Collier scored 26 goals with 38 assists and had 36 penalty minutes in 25 games as a senior for Malden Catholic. Malden Catholic won its second straight Super Eight title – defeating BC High, 3-1, in the championship game and finishing with a record of 20-1-4. Collier represented Massachusetts at the Bauer NIT, scoring two goals in three games. He was ranked 143rd amongst North American skaters in Central Scouting's final rankings and was selected by Carolina in the seventh round (189th overall) of the 2012 NHL Draft.
2012-13: Collier played for the Valley Junior Warriors in the Eastern Junior Hockey League. Skating on a team with Boston Bruins draft pick Ryan Fitzgerald and Harvard recruit Devin Tringale, Collier was the Warriors' leading scorer with 14 goals and 28 assists and had 27 penalty minutes in 43 games. The Warriors were third in the Northern Division and reached the EJHL playoff semifinals before falling to the Middlesex Islanders. Collier scored 1 goal with 5 assists and had 4 penalty minutes in six playoff games.
A long shot to make it in the pros as an undersized seventh round pick, Collier has shown that he possesses a nice scoring touch. His skating and speed will need to be among the best in any league he plays in in order to be competitive with larger players.
Collier will start his collegiate career at Boston University in the 2013-14 season.