Rob Webster is a Reader in Education and the Director of the Education Research, Innovation and Consultancy Unit at the University of Portsmouth. He joined UCL Institute of Education in 2005 as a researcher on the ground-breaking Deployment and Impact of Support Staff project. Between 2011 and 2017, he co-directed the UK’s largest longitudinal cohort study of the everyday educational experiences of pupils with special educational needs and disabilities, on which this book is based. He developed and led the award-winning Maximising the Impact of Teaching Assistants programme, which has been accessed by thousands of UK schools.