“[C]lassrooms – and the school systems they’re embedded in – aren’t always idealized teaching spaces: One too-graphic sex scene in an otherwise age-appropriate book, and an administrator may decide to nix it. Or a teacher may swap it for a book that’s less likely to get them angry phone calls from parents. … If taking out the n-word means more students can be exposed to [the book], well, I’m not convinced that that’s a horrible thing.”