A Lexile is a unit of measurement used to describe texts and readers on a common scale that represents reading comprehension. For texts, Lexile measures describe the difficulty of reading comprehension. For readers (e.g., students), Lexile measures describe reading comprehension ability. Together, Lexile measures for texts and readers make up the Lexile Framework. This entry provides an overview of the Lexile Scale, methods for obtaining Lexile measures, and current applications of the Lexile Framework.

The Lexile Framework was developed by MetaMetrics—an educational measurement and research organization based in Durham, NC. The framework is used internationally to measure student reading comprehension and text difficulty for a variety of instructional purposes, including matching readers with texts, predicting the degree to which readers will comprehend texts with known Lexile ...

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