Thanks, gapants - that's really helpful. I teach Performing Arts. I have very good results (100% A-C at KS4 and 100% Pass at KS5 - BTEC though, not GCSE or A Level) We're not part of the EB, obviously, and not part of the NC at KS3, but the school is in a socially deprived area, and the students generally lack exposure the the arts, so it's seen as a good thing, and our HT is very keen.
The AET also seems to be an educational consultancy, which, I guess, is where they make their money. To be able to say that they run a number of successful (they hope) academies would, I assume, benefit that side of things. They currently have 22 academies either up and running or in the pipeline, so they're quite big.
I wonder if academies are an inevitability, at least under the current government, and whilst I think I am leaning towards being opposed to them as a concept, fighting against them might just leave me jobless.
Interesting that our HT only chose to present this as an idea (and indeed a fait accompli) at this point in the academic year when anyone who might think this is a good point to jump ship has only a week to make that decision.