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.

On data: We are the drivers, not the driven.

Pompous asses knows how to put the moan in sanctimonious.

Students are often the last to know about change that is occurring in their own school system.

On assessment: measure what you value instead of valuing only what you can measure.

Blame and betrayal are the emotional enemies of improvement.

Students become good learners when they are in the classes of teachers who are good learners.