Here are the meanings of the most common prefixes that might accompany a Lexile measure of a book:
- BR (Beginning Reader): This code is for texts or with a Lexile measure of 0L or below.
- AD (Adult Directed): Indicates a book or text is designed to be read aloud to a child by an adult, rather than for the child to read independently.
- GN (Graphic Novel): Identifies materials that are graphic novels or comic books.
- HL (High-Low): Describes texts for older students who need content that is less complex and at a lower reading level.
- NC (Non-Conforming): Used for texts with a Lexile measure significantly higher than typical for their intended audience, suitable for high-ability readers who still need age-appropriate content.
- NP (Non-Prose): Denotes a text that is not a conventional narrative or prose, such as poems, plays, songs, or recipes, which lack standard punctuation.
Lexile measures always carry the suffix 'L'.