If your students participate in AR (Accelerated Reader) these book basket labels will help you organize your classroom library to most benefit your students. After determining the level of each book (an awesome tool is the app "Book Scanner"!), they are sorted by level and color. There are 22 labels ranging from 0.0-10.9. If you are interested in a different color combination to match your classroom or if you have any questions, please let us know!