Over a hundred years ago, a man named Harold Rugg published a series of textbooks that encouraged students to confront the thorniest parts of U.S. history: to identify problems, and try and solve them. In this episode: a media mogul, a textbook author, and a battle over what students should – or shouldn't – learn in school. Adam Laats, professor of education at Binghamton University and author of The Other School Reformers.