2007-08: Splitting the season between the U17 and U18 USNDP squads, Maxwell posted decent numbers with each squad. He represented his country at the WJC-18, posting a 2.21 GAA and a .926 save percentage, along with a Bronze Medal at the tourney.
2008-09: The goaltender, still within the US National Development Program, suited up for 15 games with the USNDP U17 squad, claiming a 2.87 goals against average and a .897 save percentage. He then moved up to the U18 squad, appearing in 22 games and posting numbers similar to his time with the U17 Team at the beginning of the season. Expect to see him with the Kitchener Rangers (OHL) for 2009-10.