I just wanted to tell you that I had the same big stack of books to bring home for the summer as we are changing classrooms and they are building the classroom during the summer so they all came home. I decided that I had too many and it was hard for the students to choose a just right book. I teach special education and I needed many different AR leveled books, none of which were leveled. I found a great website to level them and finally finished this task and am so thrilled to finally have the students be able to find just right books for themselves. I used address labels to put the level on each book. I am hoping that this is a better method for my students. The website is http://www.arbookfind.com Hope this is helpful for you.
Thank you for sharing your time and talents.