“…Professional learning has also been shown to have positive effects on teacher practice (Day, 2007;Hattie, 2009;Robinson, 2007;Wachholz & Christensen, 2003;Wei, DarlingHammond, Andree, Richardson, & Orphanos, 2009), and raising awareness of disability issues has shown some promise in improving attitudes for some groups (Bailey, Barr, & Bunting, 2001;D'Alonzo, Giordano, & Cross, 1996;Spandagou et al, 2008). Careful consideration, however, needs to be given to the models of professional learning required to support students with disruptive behaviour and the relationship between effective practices and individual teacher knowledge (Cook, Landrum, Tankersley, & Kauffman, 2003;Cook, Tankersley, & Harjusola-Webb, 2008). How these also combine within the context and the school (Gersten & Dimino, 2001) may in part be influenced by the attitudes of principals.…”