'So you think teh pupils teach themsleves? That there is no difference between teachers? That there is no such thing as a failing teacher?'
What a lot of horrible assumptions you make.
Why would you assume that teachers in poorly performing schools are failing? Some of the most gifted teachers I've ever worked with have worked in very challenging schools i.e. in Hackney where most children have English as a second language and many have learning difficulties. My dp works in a school for EBD where practically nobody gets grade C or above at GCSE yet he and his colleagues have an expemplary record of achievement in other schools. I also have a huge amount of experience of workign with teachers in independent schools. Now I don't want to start saying they're worse teachers because that just fuels the divide further but they are different. THey work in different ways and have different challenges because of the nature of their schools.
A teacher with a class of 15 highly ambitious, highly literate girls doesn't really have to do very much to get good results.
YOu want to look at value added though.
Interestingly, I have a colleague who regularly works as a consultant in private schools and our local private school has come to use our facilities and expertise in science because they're a hell of a lot better than there's.
Another point to remember is that teachers are not trained in either state or indepednent education. Many teachers move between the sectors. The vast majority of teachers work in the state sector.