I am also confused about the potential implications of performance related pay. (I'm not a teacher although I have a vested interest as I've been considering training to be one for 5 or so years, and although I'm currently teaching tefl overseas, hope to move back to the uk in time for ds1 to start primary school). I love my job but I have very little paperwork, no inspections, very little interaction with parents (although the ones I do meet are fantastic) no pension, no holiday pay (contracted sept-June) and only 1k a month so annually 9k!
I went to a grammar school which took the top 11+ performers (it wasn't enough just to pass it) and there was not a D grade or below in my year group, at a level only 2 students chose not to go to university out of 200-odd. Surely a teacher at this school would sail up the pay scale?
I had an excellent, inspiring French teacher who was much loved by all his students. He left to teach in a challenging school because he genuinely wanted to make a difference to his students and felt he could do more good in a lower performing school. Under performance related pay, would not more teachers like him be compelled to stay at the 'easier' schools? You would have to have an incredibly strong sense of vocation not to do so.
Ergo, would not higher performing schools be able to employ the better, more engaging and hard working teachers, whilst the lower performing schools be left with lower performing teachers, thus creating an even larger discrepency in education standards?
Have I got this completely wrong? Don't get much Gove-news overseas (thankfully!)