Yes, we do. I work for a small liberal arts college (2100 students). We support both Windows and OSX. The helpdesk is trained to help with most basic problems for either system. It took a long time to get the helpdesk to work with Windows, as we're primarily a Mac campus.
80% of our clients run Mac OSX. 70% of our helpdesk calls are for Windows help. 90% of our virus outbreaks has been from Windows computers. Over time it became easier to support them than to ignore them.
Free Software costs something to support too.
I think the end costs associated with supporting free software, in addition to supporting Windows and Mac, will raise the overall cost of attending college.
Let me ask you a question in return..
Do you think the average college helpdesk is prepared to answer random Linux questions?
Asking the tour guides is just plain silly. You might as well ask them what brand ERP the college uses.
Most colleges would allow a linux installation but are unprepared to provide support to every possible linux variation and configuration.
8 Catfish = 1 Octo-puss