This document discusses disruptive behaviour in education. It defines disruptive behaviour and identifies some common types. It also examines several perspectives on the causes of disruptive behaviour, including behavioural, psychodynamic, bio-psychosocial, and ecological approaches. The document proposes that disruptive behaviour is best understood as a complex interaction between these various factors. It also provides examples of checklists and assessment forms that teachers can use to measure disruptive behaviour.