High school dropout Cyndi Lauper finally got a high school diploma - albeit an honorary one - with the Class of '88 at Richmond Hill (N.Y.) High School. Lauper, who attended four high schools before quitting in the late 1960s and earning a general equivalency degree, donned a cap and gown Monday night and dabbed at tears as she accepted her diploma. She even had some advice, which she delivered in her best Betty Boop accent: "In the world of my grandfather, `The more you loin, the more you oin.'" Her teachers remembered her as "Cynthia," a student who had a tendency to skip classes, but said she looked much more conventional than she does now in her wild-haired rock star persona.