Ugh....I completely feel your pain. If they will only let kids read from the container that has their level of books, why don't you give them the right level instead of saying their level is too high to change, or whatnot. I mean, I guess if you make a kid read first grade books till third grade, their reading level won't change,sure, but...then what's the point? Sometimes teachers will at least let you choose whatever books from the library -- just tell your DC to pretend they're reading a low-level book at the same time.