Text Complexity

Each year thousands of new titles are analyzed for text complexity, or readability, and the results are reported in terms of DRP units on the DRP Scale of Text Complexity. The DRP Scale is correlated with Common Core Grade Bands and has been recognized by the authors of the Common Core State Standards (CCSS) as a valid, reliable, and accurate measure of text complexity:
  • Text complexity values for literature and popular titles appear in DRP-BookLink software.
  • Text complexity values for textbooks appear on our Textbook Readability page.
  • Passages or articles of 150-1,000 words in length can be analyzed for an estimate of their text complexity in an instant by pasting the text into our new DRP Analyzer tool.
  • Because the same DRP units are used for reporting student performance on DRP tests and for reporting text complexity, student reading ability and text complexity can be directly linked.
    Teachers using textbooks or popular titles that are not listed in DRP-BookLink or on our website may call Questar at 800-800-2598 to make arrangements for submitting those books for DRP readability analysis. The service is also available to publishers, librarians, curriculum planners, and other school administrators.