Ruth Cigman did her PhD in Philosophy of Music at Cambridge University, and has taught philosophy for many years in the US and the UK. She is currently Ethics Lead at the Academic Centre for Medical Education, University College London, and Senior Research Fellow in Philosophy of Education at the Institute of Education University of London. Andrew Davis's career includes eight years in primary schools, six at Cambridge University and over eighteen at Durham University where he is a Research Fellow. He has worked for the Quality Assurance Agency as a Subject Specialist Reviewer and directed Argument Matters, a strand of the National Academy for Gifted and Talented Youth Durham summer school for four years. Ruth Cigman and Andrew Davis are Joint-Managing Editors of the Impact series on educational policy, published by the Philosophy of Education Society of Great Britain.