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.

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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.

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Petersen believes that while the concepts of coaching and teaching are inherently similar, there is an important difference that most leaders lose sight of.

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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.

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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.

BBC: writing