We're prepared to do what we can to get dd what we consider to be a good enough education. We are about to move house to that end. We live on the edge of a rather grim area and the secindary school is the grimmest in the county. So we are moving. Not to the best school - to the best we can afford to live next to - one which doesn't seem to ahve any major problems. It looks good enough to us - we feel able to do the rest.
In theory, I could go back to work FT and pay private school fees but I'm not prepared to do that. I would be fine with a faith school (in fact I think that will be our local primary) as long we can be clear about our atheism. I went ot a faith school myself and came out unscathed - and it was a but school than the other one up the road. My mother was a Serious Believer though.
When it comes to the good of the community vs the good of my child, it is unlikely that I would choose the former over the latter.