Is it worth paying for education?

I've been a bit busy recently, but a conversation with a parent the other day got me thinking.

Their child is very good at sport and has been offered a place at a decent public school, which would normally cost in the region £9k per term. The family is very close knit and asked my advice on what the benefits would be, bearing in mind that you couldn't describe the child as particularly academic, by the family's own admission. The child currently attends the local state comprehensive.

My advice was that they should seriously think about it for the following reasons:

1. The facilities and coaching for sport will be much better. This is due to money and time being invested in sport at public schools, money and time that simply isn't available in state education.
2. The child will almost certainly get better exam results. The parents worry that all the others would be more intelligent and that would add increased pressure on their child, but I pointed out that they were offered the place for sport and that because the teachers could just concentrate on teaching rather than disciplining other members of the class, as they do in state schools, the child would learn far more. The teachers in public schools are no better or worse than their counterparts in state schools, there's just not the behavioural issues to deal with so that they can actually do their job.
3. Even though the child would have to board, a major worry for the parents, that child would almost certainly enjoy it hugely. It's not ideal for everyone, but this child, I have no doubt, would thrive in the environment. It builds a sense of community and that can't be a bad thing.
4. It opens doors in the future. Like it or not, a private education and the old school tie still hold weight and open more doors than would otherwise present themselves. In an ideal world this shouldn't happen, but the fact is that it does, so if you are offered that for nothing, take it with both hands so that you have the choice in the future.

The parents said that I really shouldn't be suggesting that public schools are better than state schools, but in general they are due purely to the ill-discipline of too many children in comprehensives. Private schools just get rid of these troublemakers who disrupt others' learning, but state schools, because of government policy on "inclusion" means that state schools have to try to cope, often to the detriment of those who are well behaved.

State education is broken for many reasons, but the fact that there are no consequences for poor behaviour because these poorly disciplined children at home ruin the futures of those who toe the line.

Not that the politicians would notice - as long as money is being saved.