Although I agree education is utterly critical (and I was lucky to go to reasonable 1st and primaries), look at my family:
3 of my brothers went to a local comp, all have done well for themselves - eldest owns a couple of jewellery shops, 2nd eldest is Technical Director for a car engineering company after leaving McLaren last year, little bro makes a good living being a sparky for one of the big horseracing auction companies.
My sister and I went to so-called 'good' grammar schools. She's never really managed to get decent, long term employment since leaving uni. Me, well, just look at what I'm doing.
I felt over pressured at secondary school - in fact the school only bothered with you if you wanted to go to Oxbridge. This made me rebel a lot.
My brothers may have only gone to the local comp, but the teachers there appaeared to have a real passion. My school had teachers who were geniuses (couldn't teach for sh!t though), but there was something distinctly lacking unless you were one of the clever people - I found they couldn't keep my interest.
I guess what I'm trying to say, is get them to the best school for the child, not necessarily the 'best'. Even at a young age, the 'social' element around school is important imho.