Review of Experimental Research on Academic Learning by Students With Moderate and Severe Intellectual Disability in General Education

A review of the literature on academic learning in general education settings for students with moderate and severe intellectual disability was conducted. A total of 17 experimental studies was identified and evaluated using quality indicators for single-case design research. Studies that met or met with reservation the criteria established for quality research were used to determine the evidence base of the instructional strategies described in the literature. The review found embedded instruction trials using constant time delay to be an evidence-based practice for teaching academic content to students with moderate and severe intellectual disability in general education. In addition, strategies that were not yet evidence-based but showed promise in the literature for teaching academic content to students with moderate and severe intellectual disability in general education were described. Last, implications for practice and directions for future research were discussed.