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.

One or two bad teachers is a problem with the teachers. A school with many bad teachers is a problem of leadership.

Too many professional development initiatives are done to teachers - not for, with or by them.

On technology: The teacher is mightier than the mouse.

Too often, shared visions really mean, "I have a vision; you share it!"

We should test prudently; not profligately.

Singapore gives 10% "white space" time to all of its teachers to come up with their own innovations outside of the official curriculum. This encourages teachers to turn to their colleagues for inspiration and ideas.