As a member of the Duke mens lacrosse program, Class won two NCAA championships (2013 and 2014) and was a three-time IWLCA All-American. He was a three-time All-ACC selection and captained the Blue Devils in 2016.

Class holds the Duke midfielder single-season record for goals (50) and is one of just six mens lacrosse midfielders in NCAA history to score that many goals in a season. He finished his collegiate career with 201 points to rank fifth among Duke midfielders; 12th all-time for the Blue Devils. His 134 career-goals were ranked tied for ninth in Duke history.

Class was named to the 2016 CoSIDA Academic All-American at-large third team. He was also a 2016 USILA Academic All-American and was a four-time choice for the All-ACC Academic Team and the ACCs Academic Honor Roll.