Book level measures the readability of the text of a book or other reading material. By default, Accelerated Reader uses the ATOS Readability Formula for Books to determine the book level by using full-text computer scans of all the words in a book. ATOS does not analyse content, age appropriateness or literary merit.
By default, Accelerated Reader uses the ATOS book level. School network administrators and school administrators with default capabilities can use the Book Level Settings to change the current book level type used in the software to Lexile® Measure.
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 Quiz Set-Up preference.