^Are you saying some parents don't encourage their children?
Or some parents have no interest in education or don't value education?
You are talking about a vicious circle really whereby nurture matters but doesn't happen maybe?^
I'd say yes, yes and yes. For many reasons - their own background, health issues, where they come from, perhaps they've just escaped a war zone with nothing and have other more pressing priorities. And however much we might want to castigate the parents for their lack of interest, if we feel it's justified, does it make sense, or is it common humanity, to let the children suffer?
A hand up is precisely what the Sure Start initiative was offering, and it's been withdrawn. Surely it makes sense in every way imaginable to try and tackle poor parenting, rather than let the vicious circle continue? If we do that we certainly are writing off human potential.