Some celebrities go back to school after they become famous — and some teach college courses. More than just “stunt casting,” though, these celebrities take their roles as “professors” very seriously. They hold office hours, design full curriculums and throw themselves head-first into the work they do for the next generation of leaders. Sometimes, too, the celebrities who teach these college courses are living legends all on their own. For example, AfroTech recently reported about Grandmaster Flash, the Hip-Hop pioneer, teaching courses at the University of Buffalo. He’s also an artist in residency at the school in upstate New York. “The residency at UB gives me a chance to tell Hip-Hop’s whole story. The sights. The sounds. The places and the moments,” he said, according to the University of Buffalo. “It’s important that we get this history right. For the next generation to take music and art in new directions, they have to know where that music and art came from, who made it and...