A Lexile measure is a valuable piece of information about either an individual’s reading ability or the difficulty of a text, like a book or magazine article. The Lexile measure is shown as a number with an “L” after it — 880L is 880 Lexile”.
This web-site is very helpful in explaining Lexile information; including, identifying the Lexile number of a book, helping readers find books to read in their Lexile range and explaining Lexile codes.
* Be careful; several books can carry the same title but are written by many different authors. If you want to be certain that you get the correct Lexile number for a book, use the “advanced search” and enter both the title and author OR enter the ISBN.