That is (rather low) corporate pricing. Additional discounts are only available for the academic sector such as schools, universities and teaching hospitals. I remember supplier VMware to hospitals last year with discounts but I understand this has now been removed.
Given the squeeze on expenditure in the public sector, and as an IT professional proposing a new virtualisation infrastructure for a school (I gather that is your intention) then I hope you are considering other virtualisation technologies, not just blindly walking into VMware?
We definitely get further discounts being academic, but i'm unsure exactly what sort of discount, be it percentage or otherwise as the prices you've given are definitely more than we're paying. Two years ago we got 4 x CPU licenses for £365 each, no idea what they cost now though as they seem to change the prices every week!
That said, i sent an angry email to vmware last night in a bid to get them to lower their prices for schools......it won't work but anything's worth a try