What we have learned, what we need to know more about.

In this paper the authors provide a synopsis of their results to date by organising them in response to four questions. These are questions about: leadership actions that account for sustained improvement or effectiveness in their school over at least several years; how the influence of these actions is exercised; differences among heads' leadership associated with school sector, phase of work and student intake characteristics; patterns of actions taken by heads toward school improvement. For each of these questions they also point to additional research that would be valuable, and their own next steps as well as the research of others. [ABSTRACT FROM AUTHOR]