“Happiness Does Not Come in Grades.” This is the title of a Korean teen movie released in the summer of 1989. The film went on to become the third highest-grossing film of that year. Just like any typical teen movie, the film weaves together a budding romance, friendships and the trials of school life. Set in Korea in the 1980s, the film ends in tragedy -- the lead character, played by then-17-year-old Le...