I was at first skeptical about it, but I've never been one to make a conclusion on something without giving it the benefit of doubt and actually TRYING it, so I put my first impression aside and took a look.
I'm very glad I did. Absolutely love it, and what a bargain price to upgrade to it as well! I do agree that for some people who lack the benefit of a touch-screen monitor, it can be a little 'fiddly' to navigate on a normal desktop, but I've not really had any issues with it. The whole 'Apps' thing took a while to convince me that it 'fitted in' but I've grown to it :) there's definitely a lot of potential with it and I hope they work on that basis to enhance it further.
I definitely think Windows 8 can be a lot more practical in schools, especially now that tablets are becoming more common. Just how I view at least - the only downside is that despite what some people will say, the way you work with Windows 8 is a lot different to Windows 7/XP (granted, most of the general bits are the same as Windows 7 but the whole Modern UI thing tends to sway people, from what I've noticed when showing them what it looks like.) - Unfortunately we live in a society where the majority of people cry the word "TRAINING" at almost anything new, what happened to the days of self-learning at home? I still do that now!
Anyway, apart from that, TL-DR is that <welshaccent>I LOVE IT WITH A PASSION I DO LIKE!</welshaccent>