This handy guide enables educators to understand root causes of disruptive student behaviors and implement practical, science-based interventions. With quick classroom assessments, real-world examples, and proven techniques, the book empowers teachers to manage "externalizing behaviors" such as opposition, defiance, and intermittent aggression effectively. It also provides guidance for engaging with parents and fostering students' pro-social and self-management skills, ultimately promoting academic success, social well-being, and a positive classroom climate.