I think it's time to delve back into my library list!
Yes. When I go to the library, I always try to get at least a few books that are too easy, a few that are just right, and a few that are too hard. Somewhere in there I always seem to get some that hit the mark, but they're often not the ones that I expected. DD has rejected books as "too hard" when they were well below her tested reading level and has devoured books that were many years above it.
Other than that, my only advice is to be flexible and not plan too far ahead.
