This is a collection of 19 articles charting developments in school effectiveness research, both on the evaluative and reflective side, and the emergence from it of pro-active school improvement ideas and initiatives. Drawing on the various studies with which he has been involved, the author aims to chart a middle course which accepts criticisms and recognises the limitations of the social context of schooling, whilst maintaining the positive message about the potency of the individual school and the difference it can make.