What is a “book level” in the AR system?

A “book level” in the Accelerated Reader (AR) system is a numerical representation that indicates the difficulty level of the book. This level is determined by various factors such as vocabulary, sentence structure, and overall content, helping educators and students select books that are appropriate for a reader's age and reading skill. The numerical scale typically ranges from lower numbers for easier texts to higher numbers for more complex reading material, making it easier for readers to find books that challenge them at their current reading level without being overly frustrating.

The other options present different concepts that do not align with the definition of a book level. For example, overall ratings by students or genre classifications provide insights into a book's popularity or theme but do not specifically indicate how difficult the book is to read. Additionally, the total number of words in a book is a separate measure that does not convey its complexity or reading level.