Book level measures the readability of the text of a book or other reading material.
District and school administrators with default user permissions can change the current book level used in the Renaissance software to Lexile® Measure. In Accelerated Reader, many pages for teachers and students show both ATOS book levels and Lexile® Measures regardless of the preference setting; however, the preference does determine what teachers will see in the Accelerated Reader Record Book, the Book Level Restrictions preference, and reports.
The ATOS Readability Formula for Books determines the book level by using full-text computer scans of all the words in a book. ATOS does not analyze content, age appropriateness, or literary merit. For more information, see ATOS Readability Formula for Books.
When the program calculates the possible points for a Reading Practice Quiz, it uses the book level and the word count in the calculation.
You can set up restrictions for students based on book level using the Book Level Restrictions preference. This preference restricts the book levels that students can take quizzes for, but students can still find other quizzes, and the individual restrictions can be overridden using the monitor password for reading quizzes.