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