Compher represented the United States at the 2012 IIHF World U18 Championships, where he won a goal medal. He was chosen again, as one of only three returning skaters, to compete at the 2013 IIHF World U18 Championships where he won a silver medal and was named one of Team USA's top three players of the tournament. Compher represented the United States at the 2015 World Junior Ice Hockey Championships, where he did not record any points in five games.