- Research shows that texts students read in grades K–12 became easier after 1962.
- Instruction is heavily scaffolded compared to college.
- High school students are rarely held accountable for independent reading.
- College reading is mostly expository, but K–12 reading is mostly narrative, which is easier to comprehend.
Source: Liben, David. (2010). "Why text complexity matters" in Common core state standards for English language arts and literacy in history/social studies, science, and technical subjects. Appendix A: Research supporting key elements of the standards. National Governors Association Center for Best Practices, Council of Chief State School Officers: Washington, D.C.