Hey we all want the the kids to have a 3.8 @ Harvard does it happen, maybe, maybe not, but going to the top institutions affords you access to the inner circle if you will of the people who run, manage and own the companies you are looking to get a job at. It is about the networking. Graduate with a 2.5 from Harvard but network with the right people...I say you get a job a heck of a lot quicker than if you got a 3.5 at school ranked lower...it is who you know, not always what you know....
