But, wouldn't a 'good' school as in Blu's :"Good schools are schools that educate the children to achieve the best that they possibly can whatever their level of ability, give them a lifelong love of learning, support creative thinking, give them opportunities that they wouldn't get elsewhere, open their minds, challenge their beliefs, express themselves and equips them find a place in society that fulfils them. Or as much of that, and more, as is appropriate."- also be highly likely to produce better exam results if you could compare it to another school with a very similar intake who didn't necessarily do all those things? That the things you've listed go a fair way towards achieving exam success, too?
I am taking on board defining 'good', here!
Xoanon- but surely all the people or institutions in the chain that leads a DC to a particular school have a vested interest, if only reputational, to make sure the 'right' DC are selected? As in- if a priest continually provides glowing references to troubled DC with issues who aren't going to do well at the school it won't be long before the school discounts his references? And no, of course a school can't decide who will and who won't attend church for the requisite length of time, but the parents who won't go to that length won't get their DC into that school, will they? Regarding schools with a religious bent, it's just been my impression that they in general (but not of course, universally) tend to produce better results than secular schools- and my OP argument is that it's the selection that makes the difference.