The authors provide an overview of current policy in the 14-19 area. They cover changes to 14-19 education, diplomas, and work-based learning in the context of new developments. They provide a comprehensive and up-to-date account of the new 14-19 phase with a focus on A levels and GCSEs, the new 14-19 Diplomas vocational learning and institutional collaboration. Drawing on international and historical analysis, recent research and practice and interveiws with policy actors, the authors set out the case for a more unified and strongly collaborative approach to the organisation of upper secondary education in England. The book is intended for education practitioners, policy-makers and researchers. It is for PGCE students on new 14-19 courses, and for those following Masters level courses on 14-19 curriculum and training. The authros are both co-directors of the Nuffielld Review of 14-19 Education and Training in England and Wales, which is a six-year independent review of all aspects of 14-19 policy, research and practice funded by the Nuffield Foundation. The Review is based at the Department of Educational Studies, Oxford University.