2010-11: Nolan Vesey skated for Austin Prep as a sophomore in what was an uncharacteristic down year for the Cougars. Austin Prep missed the Super 8 tournament after finishing third in the O’Reilly West Division and losing in a first round playoff game.
2011-12: Vesey had a breakout season for Austin Prep as a junior; scoring 16 goals with 22 assists. He was named the Cougars’ most valuable player and was named to the Catholic Central League all-star team.
2012-13:Vesey served as a team captain for Austin Prep as a senior and skated for the national champion Neponset Valley River Rats U18 team. In 20 high school games he scored 17 goals with 13 assists as the Cougars reached the Super 8 tournament championship game. Vesey scored both goals for Austin Prep in the championship game as the Cougars lost 3-2 to defending champion Malden Catholic. Vesey scored 7 goals with 7 assists and 20 penalty minutes in 11 regular season games for the River Rats and had 3 assists in six games at the National Tournament. Vesey was selected by Dubuque in the 20th round (300th overall) in the 2013 USHL Entry Draft and in July committed to playing college hockey at Maine in 2014-15.
2013-14: Vesey elected to skate in New England rather than heading to the USHL, competing for the South Shore Kings in the US Premiere League. Skating with the Kings junior team he scored 26 goals with 42 assists and 32 penalty minutes in 53 games, including three playoff contests. Not among the 210 North American skaters in the Central Scouting final rankings, Vesey was selected by Toronto in the sixth round (158th overall) in the 2014 NHL Draft in his second year of draft eligibility.