What external research has been conducted showing the effectiveness of CommonLit?

CommonLit is designed to help teachers use research-based instructional routines in literacy. In addition, CommonLit conducts ongoing third-party research to measure the effectiveness of its tools and services in terms of raising student achievement. To date, third-party research has shown that:

  • Students who complete more CommonLit assignments experience greater gains in reading performance;
  • Increased CommonLit usage is associated with more students at proficient or mastery level on a state assessment;
  • Students at Title I (low-income) schools experience greater gains on CommonLit;
  • Students in special education classes have greater gains on CommonLit.

Read the full CommonLit Evidence of Effectiveness report here.