Young and Dangerous (1957)

Tommy Price is the leader of a gang of young thugs interested in thrills, hot rods and girls. His friends bet him he can't make it with 17-year-old Rosemary Clinton. Their date turns out badly and her parents forbid her to see him again. They keep meeting, and the relationship changes him to the extent that he plans on going to college and changing his life, which delights his parents.