"the buidings that it owns won't be used and will need upkeep. if the government isn't paying for it, the church will have to."
The schools would in effect become private schools. If they cease to be viable they close and the land sold off. Just as happens now.
That's 25% of schools to be kicked out of the state sector, with no plan B for families who want state education.
That really is the wrong way round to me.
If you are going to have state schooling, available to all who request a place, then you need to have enough schools for that, before you start removing unacceptable ones. Setting up the schools you want to exist is more possible now than it has been since the state school system was set up last century.
Or of course you could advocate going the whole hog, and removing parental choice altogether. Schools to be allocated the correct 'inclusive' mix (this may well mean village children bussed out to several different villages, so the the population can be balanced across the area).
(unless of course you're just having a pop at certain schools, and determined to have the last word on the thread).
Politicians will do nothing about faith schools (indeed the major parties are committed to them, Labour having east abolished their place in the the state system in the first place, and continuing to open new ones right up to the a Brown years). Or at least not whilst people vote with their feet and send their children to them.
One phenomenon vaguely related to this is with RC schools (some of which are widely shunned) matched to similar pupil demographic other schools. Of their teen boys, they had just as many troublemakers (for want of a better word). But a vastly lower exclusion rate.
That's not pupil selection, that's ethos and pastoral care. Something every school could have.