Stirling University principal Prof Gerry McCormac said Scotland's education system needs more flexibility so teachers can do their jobs better.

BBC: Education and Lifelong Learning Committee

France's huge union-dominated education system, with 1m teachers in over 70, 000 schools, is stubbornly resistant to change.

ECONOMIST: France

Knowing how to identify and measure great teaching is a huge step toward providing better feedback and support for teachers and building a better education system for all our children -- but it's just one step.

CNN: Bill Gates: Invest in better teaching