 High levels of anxiety and depression are common psychological symptoms among children and adolescents. These symptoms affect young people in multiple life domains and are possible precursors of long-term psychological distress. Despite relatively high prevalence, few children with emotional problems are referred for clinical treatment, indicating the need for systematic prevention. The primary aim of this study is to evaluate an indicated preventive intervention, EMOTION Coping Kids Managing Anxiety and Depression (EMOTION), to reduce high levels of anxiety and depressive symptoms.