This book draws on new research exploring the practical experiences of schools and teachers who have used different kinds of grouping. Setting out the issues and discussing the strengths and weaknesses of different types of grouping, this book will help teachers decide which methods are most appropriate for their pupils. The authors offer step-by-step guidance to all aspects of grouping, including setting; streaming; within-class ability grouping; within-class mixed ability grouping; cross-age grouping; assessing and monitoring group placement; and how to implement different types of grouping. The book also discusses children's perceptions of the purposes of groups; moving between groups; and how to liaise with parents about their child moving groups. The book will be welcomed by trainees and teachers alike.