James was born in 1997 in Port St. Lucie, Florida and spent the first three years of high school at West Centennial High School. As a junior in 2013-14, he averaged 21.1 points, 8.7 rebounds, 3.6 assists and 1.9 blocks per game. James was then named the 2014 Scripps Treasure Coast Newspapers Player of the Year. For his senior year (2014-15), James transferred to Oldsmar Christian High School. James helped Oldsmar Christian go 26-4 overall, averaging 20 points and 11 rebounds per regular-season contest. He was later named the 2015 Sunshine Independent Athletic Association Player of the Year. James says that dancing is one of his hidden talents. While at the University of Wyoming, he majored in kinesiology. Fans can follow the Floridian on Twitter (@1JustinJames).