Even though Rayvaughn Hines always had big plans, there were naysayers. Being young, black and poor, he says, he'd hear others making dire predictions: "I'm going to be dead or in jail by the time I'm 18 or 21." Last month, at 22, Hines — a Gates Millennium Scholar — earned his psychology degree from the University of Virginia. "Just knowing that I beat those odds is a big deal to me," he says. Hines begins graduate studies at Virginia this fall. He plans to become a school counselor. He credits his own determination — "If I have a goal, n...