Boyle first played competitive hockey as a junior with New Jersey of the Atlantic Junior Hockey League from 2007 through 2010 and played one game for Tri-City of the United States Hockey League during his Rockets tenure. He played 39 games as an 18-year-old for Westside of the British Columbia Hockey League, where he earned All-Rookie team honors.
Boyle played his freshman and sophomore seasons at the University of Massachusetts Amherst and was 16-17-6 in 41 games before he was cut prior to his junior season. He had to sit out 2013-14 to transfer to the University of Massachusetts Lowell, where he enjoyed a standout senior season in 2015-16 by going 24-10-5 with a 1.83 goals-against average, .934 save percentage and seven shutouts to earn Hockey East Goaltender of the Year and Hockey East Co-Player of the Year, alongside Thatcher Demko. Boyle's seven shutouts set a UMass-Lowell single-season record and he played 2,364 to break Dwayne Roloson's school record of 2,342 set in 1993-94.