In this exploratory study, students in four co-taught high school chemistry classes were randomly assigned to a Universal Design for Learning (UDL) treatment or a comparison condition. Each co-teaching team taught one comparison and treatment class. UDL principles were operationalized for treatment: (a) a self-management strategy (using a…

Although coteaching has become a widespread instructional option for students with disabilities, there are concerns regarding its effectiveness on student achievement especially at the secondary level. The authors examined whether ninth grade students with learning disabilities (LD) who received instruction in a resource classroom achieved at a…