Past research suggests that it is common for teachers to draw on multiple instructional materials even when their school or district recommends, requires, or provides them with a specific curriculum. While teachers likely draw on a variety of resources to address changing and diverse student needs, studies show that teacher-selected materials can…

Students with disabilities often face barriers that hinder their capacity to access general education curricula and show their learning. Modifications to curricula and lesson plans can help reduce these barriers. Modifications are changes to what instruction is delivered--which tasks students complete and what content they learn. Previous research…

The authors of this report build on past studies by using survey data from a nationally representative sample to examine how middle and high school English language arts (ELA) and mathematics teachers use and perceive their instructional materials in terms of engagement, challenge, and usability. In addition, the authors use interview data to…