At the start of his junior season, Fultz stood 6 feet 3 inches (1.91 m).[3] As a starter for DeMatha's varsity team, he averaged 16.8 points, 7.9 rebounds, and 4.3 assists per game and was named the Player of the Year in the highly-competitive Washington Catholic Athletic Conference.[4] Among the highlights of his junior campaign were the game-winning foul shots he made in a 16-point performance while being guarded by Jayson Tatum of Chaminade and the triple-double he posted in a matchup against Roselle Catholic at the Hoophall Classic.[5] His recruiting stature abruptly soared during this season, with Rivals.com ranking him number 24 in the Class of 2016 and over 20 college programs offering him scholarships.[4]