Teaching character in schools

Government ministers have been trying to promote grit among young people in England as part of proposals to improve young people's mental health and increase school attendance. 'Grit' is the latest in a lengthy line of interventions from education secretaries who've been keen to emphasise the values they think children should be learning in school. Dr Lydia Marshall, head of research at the education consultancy Oxford Measured, tells Adam about the long and winding history