PROTOCOL: School-based interventions for reducing disciplinary school exclusion: An updated systematic review.

The primary goal of the present mixed methods review is to systematically examine the available evidence for the effectiveness of different types of school-based interventions for reducing disciplinary school exclusion. Quantitative evidence will help to understand the overall size of the impact, as well as the factors that better explain it. Qualitative evidence will help to better understand how these programmes may work, and what factors aid or hinder implementation and success.