Allen attended North Little Rock High School. As a junior, Allen averaged 21 points, 6.8 rebounds and 3.8 assists per game. He was named Gatorade Boys Basketball Player of the Year in Arkansas and led North Little Rock to a Class 7A state title.[1] As a senior, he averaged 25.2 points, 6.2 rebounds, 4.7 assists and 3.1 steals per game. Allen was named Arkansas’ Gatorade Boys Basketball Player of the Year for the second straight year. Rated No. 67 player in the class of 2015 by Rivals.com, he committed to Florida in April 2014 but requested a release from his letter of intent after coach Billy Donovan left to take the job at the Oklahoma City Thunder. After a meeting with new Florida coach Mike White, Allen decided to remain with Florida.[2]
College career
Allen scored a season-high 32 points in a 73–71 loss to Florida State on December 29, 2015.[3] Allen averaged 11.6 points, 2.7 rebounds and 1.6 assists per game as a freshman. He was named to the SEC All-Freshman Team.[4] As a sophomore, Allen averaged 14.0 points, 2.4 rebounds and 1.5 assists per game for Florida's 27–9 team that reached the Elite Eight of the NCAA Tournament. He recorded a career-high 35 points against Wisconsin in a Sweet 16 matchup and was named to the all-regional team.[5] He was named to the First Team All-SEC by the coaches.[6] Allen averaged 11 points, 2.4 rebounds and 2.4 assists as a junior.[7] Coming into his senior season, Allen was named to the Jerry West Award watchlist.[8] As a senior, Allen averaged 11.8 points and 2.8 rebounds per game.[9]