 Bradley attended Manhattan Park West High School in New York City under coach Abram White, where he averaged 20.0 points, 8.0 rebounds and 6.0 assists per game as a senior.From there he spent a year at the Pendleton School at IMG Academy in Florida.He was then offered a scholarship to play at Kentucky, and was part of the recruiting class that included All-Americans Rajon Rondo, Joe Crawford, and Randolph Morris.