Four days later she was named the Gatorade National Girls' Track and Field Athlete of the Year. She is only the second sophomore to receive the award, after Marion Jones. She was also "Track and Field News" "High School Athlete of the Year" in 2015. On 1 July 2015, she won the Youth qualifying championship in Lisle, Illinois by a quarter of a second, which entitled her to run at the 2015 World Youth Championships in Athletics in Cali, Colombia, where she took the world title at 100 meters and set the championship meet record at 11.08 (+0.0 m/s). A couple of days later, she completed the sprint double by also winning the 200 meters with a personal best time of 22.43 (-0.7 m/s).