The phrase "training guide" does sound a little ominous, though.

In a move that has generated a lot of online commentary, Chicago Public Schools (the nation’s third largest school district) announced last week that they would be restricting students' access to Persepolis, Marjane Satrapi’s 2003 graphic novel about growing up in Iran. We're obviously no fans of book-banning, but do feel readers should note that the situation is not quite as Orwellian as many headlines are making it sound: until the district's curriculum department creates a "training guide" for teachers wanting to use Persepolis in their classrooms, Persepolis will no longer be assigned to students in grades 7-10. The book will, however, still be taught to juniors and seniors in Advanced Placement classes, and should remain on library shelves.