I would argue that better schools open certain doors that others don't. I'm not saying just an undergrad degree from a better school is a golden ticket, but it certainly helps. I know for a fact, that many company recruiters come to schools like mine first. You can tell yourself that undergrad doesn't matter, if that makes you feel better, and I will agree with you on certain things up to a point, but saying it doesn't matter is blatantly wrong. It's certainly not the only thing that matters, but it certainly helps.