Lexile is a measurement system used to determine the reading ability of individuals and the difficulty level of texts. It assigns a numeric value, known as a Lexile measure, to both readers and books, allowing educators and parents to match students with appropriate reading materials. The scale typically ranges from below 0L for beginning readers to above 2000L for advanced texts. The Lexile Framework helps improve reading skills by providing a clear understanding of a reader's level and the complexity of a book. This system is widely used in schools to support literacy development and ensure that students are challenged without becoming frustrated.