On Saturday March 7, 2015, the Swim team traveled to Roger Williams University for the New England Prep School Division 2 Swimming Championships.
The varsity swim team placed third at the ISL Invitational on Saturday, February 15, at St. George's School.
On Friday, August 15, Greg DeMatteo was named to the 2014 USA Swimming Scholastic All-America Team.
On Saturday, March 1, 2014, the swim team delivered one of its best performances of the season at the Division II New England Prep School Swimming and Diving Championships.
The Swim Team took third overall, while Jack Adams '15 finished first in the 100 Free and second in the 100 Backstroke, at the ISL Invitational on February 8.
Ned Supple '09 has been named next year's Captain of the men's swimming team.
The St. Sebastian's School varsity swim team participated in the EIL Championship Meet on Saturday, February 25, 2012.