“…Not only is their own learning impeded, but disrupted classrooms can impact on learning for classmates ("Conduct Problems Prevention Research Group", 1999;Wells, Barlow, & Stewart-Brown, 2003). The value of early intervention to promote social and emotional health is increasingly acknowledged (Aviles, Anderson, & Davila, 2006), in particular the potential for school-based interventions (Fazel, Hoagwood, Stephan, & Ford, 2014;Wolpert, Humphrey, Belsky, & Deighton, 2013). As a result, an increasing number of interventions are being conducted in schools, run by a variety of social agencies (Vostanis, Humphrey, Fitzgerald, Deighton, & Wolpert, 2013).…”