This document discusses trauma and its effects on early childhood brain development. It notes that prolonged exposure to stress hormones from traumatic experiences can impair brain development and functioning. The document then discusses the scope of childhood trauma, noting that a study found most children and adolescents served in a trauma network had experienced multiple traumatic exposures. It also discusses how evidence-based interventions can effectively treat trauma-related mental health conditions. Finally, it discusses how a Positive Behavioral Interventions and Supports (PBIS) approach in schools can help students by establishing a continuum of supports from universal to intensive levels.