Technology can be a real time-saver for teachers, and Scholastic's Teacher Book Wizard is one of the best tools I have seen in a long time. You don't have to be a member, and it is so simple to use.
Select your reading level system: Grade Level Equivalent, Lexile measure, Guided Reading, or DRA. Type in the title of a book, the author, or a keywork and it will search for you. Results will provide the interest level, the reading level system, and whether an AR quiz or Scholastic Quiz is available for the book.
For other search options, you can run a "Book Alike" search or run a "Leveled Search" to fine-tune your selection. Membership is available and allows you to store your book lists and to share your lists with friends.
I wish this tool had been available when the Kindergarten team had been leveling the Guided Reading library. It would have saved hours of work!! Scholastic's Teacher Book Wizard is a "must have" tool for any ELA educator!