It might avoid the 10,375 people coming in here and replying with OH MY GOD DID YOU SEE JURASSIC PARK, anyway. Yes, internet. I am fairly certain that a few people did see that movie.

Well, at at least some colleges (such as the one where I work), a mandatory attendance grade is required across the board for all classes. I'm not sure how much leeway the professors have within these parameters, but they are, at least, required to take attendance and enforce a maximum absence policy.

And what, exactly, is wrong with it being "my time" after 5PM? If I already spend a third of my day working, why should I be expected to put in more than that? You may perceive it as a lack of work ethic, but realize also that you are putting undo pressure on people who do have personal lives or obligations that would keep them from spending three or four extra hours at the computer, plugging away at something that could easily be left to the next day without any real detriment. Before someone makes assumptions (particularly because I'm female), I am not saying this as an angry parent whose child-related obligations get in the way of their career success-- like you, I have no interest in children (although I could certainly see how someone who does choose that lifestyle might be a little bitter). But really, working so many long hours is detrimental to your health and sanity-- it's a buzzword, but "work/life balance" does have its place.