“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.”

“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.”

— Andy Hargreaves