Yes, the Wacom Tablets in the Mac lab DO work. However, you have to "activate" them in an odd way.
ON THE DESKTOP:
1) File > Find... (or Apple+F)
2) Type in "wacom" at the magnifying glass
3) Double Click on "TabletDriver" in the Applications list. This will activate the application from the start
up items (for some reason it is not running on start up).
4) USE YOUR PEN!