What is a Lexile Level?
A Lexile Level is a mathematical formula used by MetaMetrics, Inc. to calculate the difficulty of the readability of a book. A “lexile” is a standard unit for measuring the comprehensibility of a text. The entire book is used to make this determination. Lexiles are sometimes used along with a computerized reading program very similar to Accelerated Reader. Teachers cannot level books using Lexile levels. Only trained analysts from MetaMetrics, Inc.
