I came across this in today's New Zealand Herald. It basically states that students of higher ability will do better in lower performing schools. The problem here is that this depends on schools having under performing students for the limited few of high performers to benefit.
The articles starts:
Parents are being warned against sending their children to the best-performing school in the neighbourhood if they want their children to do well.
Research from the London School of Economics shows they could be more confident and therefore successful if they came top of the class in a worse school which does not do so well in tests or exams.
To read the article in full, click here.