@ Superatticman
I'm afraid VDI on standard server platforms is going to struggle to run programs such as sketchup. You will have to invest (heavily) in blade servers with onboard gfx chip emulation to provide applications such as these through VDI. You will then find direct3d/openGL performance will be possible, although the performance will be similair to that of most 2006 era entry level 256mb Geforce Video cards. Reasonable, but nothing to really impress anyone.
Please don't tell me you've made the classic mistake of taking the 'VDI for everything' approach then realising a number of applications that most frontline school IT environments require don't actually work very well, or at all!
You have have you not? But rest assured, I did exactly the same and fell for the salesman's pitch.
VDI has a place in Education and is the way forward, but just be very, very careful before choosing your infrastructure as it will soon end up costing more than standard IT kit.