Sure, that's a factor, but a minor one. Higher education isn't just about being a dork and going to classes.
College is all about life.
It's about living on your own, in a tiny dorm room with some geek who takes his or her pog collection a little too seriously. It's the first time in your life when you'll have to fend for yourself, without someone around to remind you when to eat or sleep. Not everyone can adjust to the demanding lifestyle overnight. All college graduates have had their moments when they couldn't figure out the purpose of fabric softener or how to write a 30-page report in one night. We hope you studied.