SOLUTION
Please try closing out of all AutoCAD applications, then try resetting your AutoCAD settings by running this script:
1) Browse to Departmental Shares (Y:)\Common\Self-Help\Reset AutoCAD Settings
2) Double-click "Reset AutoCAD Settings.bat"
3) Follow the directions in the Command window
If it still will not work after running the script, then we will try resetting your profile on the server. In order to do so, you'll need to be logged off of the classroom computers. Please let us know when you'll be logged off (by submitting a Mines Help Center service request), and we will reset your profile then.