You cannot switch teachers on and off as if they were PowerPoint presentations.

Your most memorable students are in your first classes and your last classes: make your last years the finest of your career.

It is not the time to put school districts up for auction. Now is the time to galvanize them into action.

In high performing countries, principals are working with highly qualified teachers who come from the top tiers of the graduation range, who have been rigorously prepared in universities and through supervised practice in schools, and who remain in education for all of their careers.

We must use collegiality not to level people down but to bring together their strength and creativity.

High performance leaders know they have to breathe out when they are coming up for air.

There is a new science of complexity which says that the link between cause and effect is increasingly difficult to trace; that change (planned or otherwise) unfolds in non-linear ways; that paradoxes and contradictions abound; and that creative solutions arise out of diversity, uncertainty and chaos.