lexile

What is a Lexile® Measure?
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. A book, article or piece of text gets a **Lexile text measure** when it's analyzed by MetaMetrics. For example, the first "Harry Potter" book measures 880L, so it's called an 880 Lexile book. A Lexile text measure is based on two strong predictors of how difficult a text is to comprehend: word frequency and sentence length. Many other factors affect the relationship between a reader and a book, including its content, the age and interests of the reader, and the design of the actual book. The Lexile text measure is a good starting point in the book-selection process, with these other factors then being considered. Lexile text measures are rounded to the nearest 10L. Text measures at or below 0L are reported as BR for Beginning Reader.

The #|idea behind The Lexile Framework for Reading is simple: if we know how well a student can read and how hard a specific book is to comprehend, we can predict how well that student will likely understand the book.

Lexile Measures Help Readers Grow, and Help Parents and Teachers Know
Teachers and parents can best serve a student's literacy needs when they treat him or her as a unique individual, rather than as a test score or a grade-level norm or average. The reading abilities of young people in the same grade at school can vary just as much as their shoe sizes. However, grade-leveling methods commonly are used to match students with books.

When a Lexile text measure matches a Lexile reader measure, this is called a "targeted" reading experience. The reader will likely encounter some level of difficulty with the text, but not enough to get frustrated. This is the best way to grow as a reader—with text that's not too hard but not too easy.

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