I dunno which school you mean, but at UIUC they have a big warehouse in Orchard Downs area where they keep all the surplus (also includes desks, chairs, book-cases) until it goes to the state. This is just for internal UIUC use and you require a Surplus Redistribution Form signed by your buildings facility manager. That sounds like a handful, but it's actually pretty easy to get. You are on good terms with your facility manager right?
In your specific situation I would go talk to the department office and find out who the manager in charge of surplus disposal for the computer switchover, they might be able to help you as well.
In addition, you can get some really sweet nuke-proof desks and stuff to really geek out your office.
From UIUC:
SURPLUS REDISTRIBUTION
Surplus equipment and furniture are available from the UIUC Surplus Redistribution Facility, located in the Horticulture Field Lab Annex at 1707 S. Orchard Drive.
If builders built buildings the way programmers wrote programs, then the first woodpecker to come along would destroy civilization.