Predicted grades

I don't think you should dismiss the idea purely on your anecdotal evidence, I could say that while I was at school two science teachers left to teach in private schools. It may be that your local comprehensive schools need reform. I will still argue a teacher who is willing to put up with a 'sub-standard' school is more dedicated than one who will only teach where it's easy.

At the moment I'm at a 6th form college and have been taught AS Maths by undoubtly the best/most dedicated teacher I have ever met. Yet just after we sat our exams he announced that we won't have him for A2 as he is leaving for a private school as at the moment he is only renting a 1 bedroom flat in an area with a notoriously high crime rate and feels that should he start a family (he's only in his late 20s at the moment) it wouldn't be a desirable enviroment. I digress, basically he was stolen by the lure of a private school offer.

And who's to say that if private schools weren't there that individual would stay? He could off easily moved to a different sector; monetary incentive is his reason for leaving, not Private Schools.

I think it was that the private school was offering more which they could do because they weren't limited by the LEA's tightness..

And who's to say that if private schools weren't there that individual would stay? He could off easily moved to a different sector; monetary incentive is his reason for leaving, not Private Schools.