He split the 2003–04 season with the U.S. Under-17 Team and U.S. Under-18 Team, playing in 61 games total, posted 25 goals, 19 assists and 44 points to go along with 61 penalty minutes. He also had a goal and an assist to help U.S. Under-18 Team to silver at 2004 IIHF World U18 Championships in Minsk, Belarus. Prior to him joining the US Development Team, Skille led the Verona Area Wildcats to two WIAA State Hockey Tournament appearances. He had a total of 99 points in the two years with Verona Area.