I organize my library books by genre and series in different color baskets. I also place a special label marked AR (along with book level and point value) on books that have AR quizzes available. I am taking the summer to revamp how I label my books. In my old school, different reading levels were given different color dots, but they were unique to the school. I am now switching over to a new county (and grade level) and would like a more universal way of labeling my books. How do you label your library books?