Creativity is widely accepted as being an important outcome of schooling. Yet there are many different views about what it is, how best it can be cultivated in young people and whether or how it should be assessed. And in many national curricula creativity is only implicitly acknowledged and seldom precisely defined. This paper offers a five dimensional definition of creativity which has been trialled by teachers in two field trials in schools in England. The paper suggests a theoretical underpinning for defining and assessing creativity along with a number of practical suggestions as to how creativity can be developed and tracked in schools.