School Leadership and Student Outcomes: Identifying What Works and Why Best Evidence Synthesis Iteration [BES]

The big finding of the BES is that when school leaders promote and/or participate in effective teacher professional learning this has twice the impact on student outcomes across a school than any other leadership activity. New Zealand principals spend less time on those activities that make the most difference than many of their international peers.

http://www.educationcounts.govt.nz/publications/series/2515/60169/60170