Autism Spectrum Disorder is part of the How to Help series of books exploring issues commonly faced by children and young people at home and in school. Autism Spectrum Disorder (ASD) offers a complete introduction to this complex and often confusing topic. A lack of clarity can arise for many reasons, including the broad spectrum of characteristics and symptoms that can be represented within an ASD diagnosis (ranging from the very severe, requiring 24-hour monitoring, to the mild but no less important, where the individual can be successfully included in education and society), and the many competing interventions and treatments all purporting to be successful. Arguing that every child and young person with autism can and should lead an inclusive and fulfilling life, Jo-Ann Page and Gavin Reid show that it is up to us as adults to ensure that this is possible—and show how parents, carers, teachers, and schools can help.