This session will suggest do-able, research-based practices which teachers can use in the secondary classroom to help prevent mental health difficulties and support students who may be struggling with their mental health. Drawing on the Early Intervention Foundation/Anna Freud Centre’s recent Classroom Wellbeing Toolkit, it explores how ordinary teaching practices - from establishing relationships to giving feedback, helping students prepare for exams and helping them deal with work that is difficult - can provide opportunities to build students’ mental health.