Although there is a growing evidence base about effective classroom management practices, teacher implementation of these practices varies due to a number of factors. A school's organizational health is one aspect of the broader social environment that has been hypothesized to influence implementation of interventions. Yet, empirical evidence is…

Many children with disabilities receive the majority of their instruction in the general education classroom where many universal programs are implemented. It is therefore important to examine the impact of evidence-based universal interventions on children with disabilities. The purpose of this study was to determine whether the Incredible Years…

The purpose of this study was to examine the treatment effects of the Incredible Years Teacher Classroom Management (IY TCM), a universal classroom management intervention, on the outcomes of children with aggressive behavior in elementary school. Classroom management has been demonstrated as a factor in either escalating children's aggressive…

This article focuses on the Incredible Years Teacher Classroom Management (IY TCM) intervention as an example of an evidence-based program that embeds fidelity and adaptation within its design. First, the core features of the IY TCM program along with the methods, processes, and principles that make the intervention effective are described. The…