I wish I had the time! I didn't level my library (or even organize it at ALL this year) because it was my first year in 2nd and I honestly didn't have many books until November. This year I am teaching summer school in July and have a 5-day paid (yay) training for math in August, so I really don't want to spend my "summer" leveling books. Am I doing "damage" to my kids by not having the books organized whatsoever? I literally have them tossed in bins on the shelves.