2010-11: Alex Schoenborn played high school hockey in his hometown of Minot, ND and was one of the top forwards at USA Hockey’s Select 16 Festival in June. In 27 games for Minot HS he scored 23 goals with 22 assists and 48 penalty minutes. He also attended USA Hockey’s National Team Development Program camp. Schoenborn was selected by Lincoln in the first round (12th overall) of the 2011 USHL Futures Draft.
2011-12: Schoenborn skated for the United States Select U17 team that won a gold medal at the 2011 Five Nations Tournament in August. He appeared in three USHL games with the Lincoln Stars; playing with the Omaha Lancers AAA U16 team most of the year. He had no points and was -2 with 2 penalty minutes for the Stars. Schoenborn scored 10 goals with 24 assists and 47 penalty minutes in 17 regular season games for Omaha and had 6 goals with 4 assists and 8 penalty minutes in four playoff games. He attended USA Hockey’s Select 17 Development Camp in June.
2012-13: Schoenborn opted to play Canadian major junior hockey rather than pursuing a college scholarship. He played 20 regular season games for the WHL champion Portland Winterhawks and spent time with the NAHL’s Wenatchee Wild. Schoenborn scored 1 goal with 1 assist and was -2 with 22 penalty minutes for Portland but did not appear in any playoff or Memorial Cup games. He was -3 with 1 assist and 34 penalty minutes in 10 NAHL games.
2013-14: Schoenborn was one of two players, along with center Chase DeLeo, to skate in all 72 regular season games for Portland in his first full season with the Winterhawks. He scored 18 goals with 18 assists and was +19; leading Portland with 121 penalty minutes. The Winterhawks had the WHL’s second-best record behind Kelowna and reached the WHL finals. Schoenborn scored 3 goals with 2 assists and was +1 with 39 penalty minutes in 19 playoff games. He was ranked 78th amongst North American skaters in Central Scouting’s final rankings prior to the 2014 NHL Draft.