Background
He was born in Rice Lake, Wisconsin and attended Rice Lake High School.
He was born in Rice Lake, Wisconsin and attended Rice Lake High School.
Ellenson played basketball at Rice Lake High School, where he also competed in track and field (high jump, discus). During his freshman year (2011-2012), Ellenson averaged 12.0 ppg., 7.0 rpg., 1.5 apg. and 1.5 bpg. The next year (2012-2013), sophomore Ellenson averaged 21.5 ppg., 11.8 rpg., 3.5 apg. and 1.8 bpg.
Career highlights and awards At the conclusion of the 2015-2016 regular season, he was selected to the First Team All-Big East.
In August 2014, Ellenson was a member of the United States" National Team at the 2014 International Basketball Federation Under-17 World Championship in Dubai, scoring 21 points in the quarterfinal game with China.