Design evolves - Most of what's considered good design at any one time looks horribly dated a decade later. Look at the old Apple machines, the G5s and G3s look terrible, it's only because there are newer, more modern products still made by Cupertino to keep their reputation. As soon as that stops, they fade, and Jobs with them.
Don't suppose there'd be any way of forcing the machines into logging into seperate accounts, (blocked an de-restricted) depending on weather or not they're in range of the school's wireless network would there? I guess there'd have to be some kind of an external blocker too though for outside school, can't have the little darlings pirating Spore in a seperate window behind their English essays...
Happily using adblock PLUS edition ('cos that makes it better somehow) for a few months now to save bandwidth and nerves alike, So I don't get the damned things anyway... Wish we had TiVo in the UK properly, I'd really like to blitz adverts out of my daily life entirely.