“…They defined co-teaching as &dquo;two or more professionals delivering substantive instruction to a diverse or blended group of students in a single physical space&dquo; (p. 2). Since Bauwens, Houracade, and Friend's seminal article in 1989, the current educational literature has been replete with anecdotal experiences as well as suggestions for implementation and guidelines for setting up co-teaching situations (Cook & Friend, 1995;Reinhiller, 1996;Sevakis & Harris, 1992). Although there are a variety of co-teaching options (e.g., one teaching, one assisting; station teaching; parallel teaching; alternative teaching; team teaching; see Note 1; Cook & Friend, 1995), the impact of such procedures on student outcomes is unclear.…”