Introducing self-assessment on an in-service certificate in education programme for teachers in post-compulsory education

This article describes how self-assessment was introduced into a Certificate in Education course for practising teachers in the post-compulsory sector, and how the method and instrument of self-assessment used was refined over successive cohorts for a 4-year period. It describes an action research project (which, as a whole, lasted 6 years), but does not discuss the methodology of action research. Rather it provides a narrative on how one piece of action research was actually carried out.