In this article we review research on alternative routes to certification (ARC) in special education. First, ARC is defined, and the confluence of factors that has hastened its growth and popularity, particularly in specialized, high-need areas such as special education, is discussed. Second, available research in the area of ARC in special education is summarized, with particular attention to the efficacy of the various approaches and programs and to the process and outcome variables used to assess program impact. Third, programmatic features associated with successful ARC programs are described, and what remains unknown about ARC programs is discussed. We conclude with a series of recommendations for policymakers and teacher educators.