You are going to place a $12,000 piece of electronic equipment right in front of 30-some hyperactive children? I can see this for a business or in a college setting, but not for the younger, more projectile-oriented crowd of 3rd-graders.
I think purchasing a regular 80" HDTV (LCD) with touchscreen, connected to a PC (an Atom system might be good enough for this) might be the cheaper and more wise solution to think of!
For a screen that turns white or black and shows lines as you write on it, (and has the option to break down over time; something chalk boards are much less prone to); I'd say $1.500 is more than enough money for this!
the "source" you've linked above (NexGadget) is just a 1:1 copycat of crunchgear...i don't think this kind of spam should be supported. You can find the original article (with links) here at crunchgear.com
It seems very tedious to have to click and drag across a board every time you're going to grab something. And yeah, a laser pointer would be nice. I think we're still a ways off from using this in a classroom.
They have similar boards already called Smart Boards, my high school has over 10 of them by now. They're obviously cheaper, and still provide touch functionality along with useful programs for note taking and such.
I don't see this working well in an elementary to high school class room. Young kids always find ways to break things and there will always be teens who break or steal things to show that they are "cool". IMO, it's too small for a large college classroom, but could work in a smaller one.
Or just use a projector and Wii controller like on Johny Chung's website for less than a grand. Could even make the creation of it a class project for learning. Since when do schools have that kind of money to throw around anyways? They can barely afford basic classroom supplies in many places, let alone 12 grand TV's..... Not saying I wouldn't like one for the geek in me, but that's REALLY expensive for a normal school.
Thats going to be a hard sell, my secondary school had smart boards in when I was still going there nearly 10 years ago, they was basically just a touch sensitive board mounted on the wall connected to a PC that was also connected to a projector.
The result, well what E-Board can do just at a fraction of the cost.