The key was not just establishing that there was a problem, but figuring out what the best doctors did differently, and teaching that difference to doctors.
Mr Miliband's speech highlighted that one of the biggest factors in the different levels of pupil achievement was the difference in the quality of teaching within schools.
But when Teacher Appreciation Week comes around then of course teachers and their representatives want to emphasize the fact that one of the many things that makes a difference is the quality of teaching.
Petersen believes that while the concepts of coaching and teaching are inherently similar, there is an important difference that most leaders lose sight of.
She spent her first year out of college learning the difference between British expressions and grammatical errors while a Fulbright English Teaching Assistant in a high school just outside of Madrid.
We need a programme to raise the quality of teaching and school leadership which is what makes the most difference but under this government, we've seen 10, 000 teachers leave the profession.