The Boston Junior Bruins were founded in 1991 as an independent junior team. The Junior Bruins played prep schools and local junior teams, and competed in major tournaments throughout North America before joining the
Tier III Junior A Eastern Junior Hockey League (EJHL) in 1999. During their first three EJHL seasons, Head Coach Peter Masters and his staff led the team to fourth, third, and second-place finishes overall in the twelve-team league. In 2000–01 the team finished the regular season with a 45-15-1 overall record as the EJHL Northern Division Champions. To better develop talent for their Junior A program, the Junior Bruins fielded a number of youth hockey teams as well as two Tier III Junior B teams in the
Empire Junior Hockey League (EmJHL) and
Continental Hockey Association (renamed to Eastern States Hockey League in 2011) (CHA/ESHL). During the 2012–13 season, Junior Bruins and other EJHL teams announced the formation of a new league called the
United States Premier Hockey League (USPHL). The new league would go on to absorb the former EmJHL and the recently announced
Eastern Elite Hockey League (a new league consisting mostly of the former
EJHL South) to create several junior and youth divisions within the USPHL. The former Junior A team would play in the USPHL Premier Division and its former Junior B team would play in the USPHL Empire Division (later named USP3). The Junior Bruins would also field a team in the USPHL Elite Division. In 2017, the leagues underwent another realignment and the USPHL added the National Collegiate Development Conference (NCDC) as their top division. The NCDC was intended to become a Tier II league but was denied sanctioning by USA Hockey. The USPHL went forward without sanctioning for its junior leagues in the 2017–18 season and all of the Bruins' team were promoted the NCDC, Premier and Elite Divisions from the Premier, Elite and USP3 Divisions respectively. In April 2024, the Junior Bruins sold their Tier II club to the
West Chester Wolves, who had been approved as an expansion franchise about a week earlier. The remainder of the organization's programs continued and, one year later, the Premier Division (Tier III) club was promoted to Tier II status and joined the National Collegiate Development Conference. ==Team members and regular season==