"Having the "same" text written for different levels of English comprehension can be a life-saver for a multi-level class of English Language Learners or for a teacher with a mainstream class that includes some students that are facing other challenges. They can be an important tool for differentiation."
"It is critical that teachers structure units and lessons so that all students can access a clear standard. Students who struggle must understand what they need to do to meet expectations and students who are advanced must be challenged to meet a more complex learning goal."