2010-11: Rourke Chartier played in eight games, including one playoff game, with the Saskatoon Contacts midget AAA team and played for the Saskatoon Generals bantam team. He scored 2 goals with 4 penalty minutes in seven regular season games for the Contacts and scored 1 goal with 1 assist in his only playoff game. Chartier was selected by Kelowna in the first round (15th overall) of the 2011 WHL Bantam Draft.
2011-12: Chartier was the second-leading scorer for the Saskatchewan champion Saskatoon Contacts midget team that won a bronze medal at the 2013 Telus Cup. He skated for Team Saskatchewan in the 2011 Western Canada U16 Challenge Cup tournament. Chartier scored 23 goals with 34 assists and 14 penalty minutes in 42 regular season games and had 8 goals with 5 assists and 2 penalty minutes in 13 SMHL playoff games. He scored 7 goals with 3 assists and 4 penalty minutes in seven games at the Telus Cup. Chartier had 4 assists skating for Team Saskatchewan in the WCCC.
2012-13: Chartier played in 58 regular season games and three playoff contests for Kelowna in his first WHL season and played for Canada Western in the 2013 U17 World Junior Challenge. He scored 13 goals with 17 assists and was +16 with 8 penalty minutes during the regular season. The Rockets finished second in the B.C. Division and reached the second round in the playoffs. Chartier appeared in three playoff games with no points or penalties. He scored 1 goal with 2 assists and 2 penalty minutes in five games for Canada Western.
2013-14: Chartier played for Canada’s gold medal-winning U18 team at the Ivan Hlinka before returning to Kelowna for his second WHL season. He provided supplementary scoring for the Rockets — skating in all 72 regular season games — finishing with 24 goals and 34 assists and was +26 with 8 penalty minutes. Kelowna had the WHL’s best record during the regular season.