There are a variety of book-leveling systems. They are attempts of educators and publishers to quantify the text complexity and readability of books. The systems each have their own metrics for analyzing texts and assigning reading levels. Most books in the Ballenger Teachers Center are NOT labeled with reading level information. This guide is to pull together resources for finding reading levels of books.
TeachingBooks is a valuable resource for teachers. It has information on thousands of books and includes information on reading levels and text complexity. You will need to create an account. When you sign up, sign up for an EDUCATOR account.
Resources about children's and young adult books and authors | Ebooks for students and educators | Build reading lists and lessons | Activities, book trailers, games, and author interviews | Sign up for a login with your EIU email
NoveList has Lexile Levels for books when they are available.
Subset of NoveList Plus, geared towards younger readers | Readers advisory tool | Book reviews | Teaching tools for classroom use
Booksource is a leading provider of books for classroom libraries.
Guided Reading was developed by Irene Fountas and Gay Sou Pinnell. Guided Reading Levels use a letter system (A-Z) to label books for text complexity.
From the Lexile Hub: "The Lexile Framework for Reading uses a unified scale to link student reading ability with text complexity. The framework provides a way to place this ability on one side of the scale and text complexity on the other, creating a measurement scale that connects them. As an educator, you can use Lexile measures to find books with the right level of challenge and vocabulary, supporting the development of your students' literacy skills."