The PT-RZ670BU or RZ670U, is a large, high performance feature laden - tackle just about every situation - projector. It's a long life laser projector, and can be positioned vertically, horizontally, off angle, basically every-which way. It will be ideal for any situations which require 24/7 operation thanks to it's laser design (rather than dual or quad conventional lamps). It's also ideal for art display, and museum like areas.
It's got lots of lenses, but of particular note, I want to mention that one is an ultra short throw lens that lets the projector be positioned in the tightest places, including, rear screen applications.
The only scary thing about the Panasonic, is it's list price, but fear not, because despite an over $24,000 MSRP - with lens choice optional, that price has little - almost nothing to do with real selling prices, which are typically not much more than half of that. Whew!
As you would expect, it supports edge blending, and multi-projection setups. That makes it ideal for permanent displays, museum environments, simulators, and whatever other unique applications you educators can come up with.
Amazing as this DLP projector performs - measuring over 7000 lumens - and remember it's a laser projector it will take years to lose significant brightness - it's not perfect, a faster than 3X color wheel would have been nice, and there's no wireless networking. That said, it is impressively capable.
BTW, for some reason we have never been able to get Christie or Barco (two companies that specialize in large venue projectors) to send us some of their competitors, but perhaps that's because they are scared of this Panasonic's performance. This Panasonic RZ670U is going to be tough to beat.
PS. To you K-12 Educators: I don't think you'll be able to rationalize one of these Panny's. Alas!