Background: Attention deficit hyperactivity disorder (ADHD) is consistently associated with poor school-level outcomes. Although school engagement is recognized as a protective factor associated with increased academic achievement, school retention/completion, and student well-being in the general population, little research has focused on school…

Background: The role of reactive aggression in the development of peer victimization remains unclear due in part to a failure to account for confounding problems of behavioural undercontrol (e.g., hyperactivity). As well, the school social context has rarely been examined to see whether these risks are mediated by relationships with teachers.…