Lexile to AR Conversion Chart for grades K-12There are many reading skill level classification methods, but Lexile and Accelerated Reader are the most common.
Other systems include the Rausch System (RIT), Fountas and Pinnel, Rigby Literacy Levels, A to Z Reading, DRA, Basal reading, Reading Recovery, Scholastic Guided Reading, mClass, and Step into Reading. See this image for more conversions https://i.pinimg.com/originals/b6/b5/01/b6b501530052f3707f7a6540420213ca.jpg