You can choose to be offended at anything if you so desire, it's a purely personal choice. Your comment (and that of Tubey) seem to assume that I'm expecting the child from Kirkby to achieve the same as the one from Eton. I don't, any more than I expect me to be as good a cyclist as Bradley Wiggins. A whole manner of things suggest that isn't ever going to happen, but by training well, eating properly and various other things, I can be as good a cyclist as I can be, and certainly a lot better than had I not bothered at all.
The thing is, that child from Kirkby can still make the best of their life by going to their local school, trying hard and doing the best that they can, and it wouldn't surprise me if the children from poor backgrounds that do well in life don't do just that. You can't choose many of the things you have in life, but you can choose how you respond to them.
So no, I don't blame the poor for being poor, but being poor doesn't mean you don't work hard or try your best given the opportunities you do have. If someone chooses to abuse the fantastic opportunity afforded to them as a British citizen and doesn't try their best in school, then yes, I do blame them for that.
Feel free to take offence.