The leadership and management of change is fraught with tensions: tensions between desired change and imposed, often unwanted, change; between planned and unplanned change; between systematic planning and evolutionary change. And change can usually be guaranteed to cause a great deal of disturbance in a school system. Now this is not always a bad thing if it is well led and managed. But what is the best way to lead and manage change? Is there in fact one best way, or should it depend on our circumstances? Where do we start? One way may be to understand as much as possible about the process of change in order to have a fair chance of leading and managing it effectively.