This guidance is for teachers, school governors and professionals with public health as part of their remit working in education, local authorities, the NHS and the wider public, independent, voluntary and community sectors. Children's social and emotional wellbeing is important in its own right but also because it affects their physical health (both as a child and as an adult) and can determine how well they do at school. Good social, emotional and psychological health helps protect children against emotional and behavioural problems, violence and crime, teenage pregnancy and the misuse of drugs and alcohol.