Lexiles - Middle School

The Lexile Framework

What is a Lexile and how is it determined?


A Lexile measure is an indicator of how difficult a text is to comprehend based upon:

  • Word Frequency
  • Sentence Length
What is the purpose of determining Lexile levels?
  • To assess the reading difficulty to texts
  • To assess students' ranges of reading comprehension
  • To predict how well a student is likely to comprehend a particular text
How are students assessed?
  • Students' Lexile levels are measured using the Scholastic Reading Inventory or SRI
  • The SRI is an interactive test that determines students' comprehension ranges in Lexiles
  • Students are assessed three times a year - September, January and May
Do Lexile levels correlate to grade levels?