Development of the collective capacity of leadership teams, rather than the individual capacity of leaders, is still limited, despite much research suggesting that collective capacity is a greater driver of performance than individual capacity (see exhibit 19). All systems face challenges to refine, contextualize and optimize the processes they use to support their leaders.  What do high performing school systems do to capture the leadership premium? There are some fascinating results that shift one's assumptions about what makes a difference....

Authors: Sir Michael Barber, Fenton Whelan, Michael Clark