Moore came to Utah State from Sky View High School. His father, Jimmy Moore, had been a standout player for the Aggies and is in the school's athletic Hall of Fame. Following his junior season, Moore declared his eligibility for the 2016 NBA draft, but opted to return for his senior season. As a senior, he was named second-team All-Mountain West Conference after averaging 16.6 points and 5.5 rebounds per game.