The Lexile Framework for Reading

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What are the letters in front of the Lexile measure (AD, NC, HL, IG, GN, BR and NP)? Lexile Codes

Last Updated: Dec 05, 2012 07:49PM EST
This is a Lexile code. It gives you more information about a book that relates to its developmental appropriateness, reading difficulty, and common or intended usage. Sometimes a Lexile measure by itself is not enough information to choose a particular book for a particular reader. See our "Lexile Codes" topic for detailed definitions of each code.
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