I actually argued against the Windowsification of all of the classes in my college and pushed back at every opportunity. I don't think it makes sense for a college that is teaching computer science to dedicate all of their resources and tools on Windows only software. C++ is used outside of Microsoft Visual Studio, and the code that works in VS will most likely not even compile due to not being standards compliant (Although VS2010 has gotten MUCH better at it than older versions).
Many of my teachers eventually would relent and realise that yes I was right. TCP/IP is one of the classes I took in which Windows was required. TCP/IP is a network protocol, it is available in all major OS's. I turned in entire assignments with a simple note "Windows required, don't have Windows." Luckily I didn't end up getting docked points because they realised I already knew all of the information in the course.
One thing that was really nice, and I am surprised none of the teachers used it against me was the fact that with MSDNAA I as a student had access to thousands of dollars worth of Microsoft software. You name it I could download a free legal copy of it for use during my tenure at college as a student. Microsoft seems to have that on lock. What better way to get students to play with your platform than to have them use all your tools and software free of charge. Windows 7, Visual Studio, SQL, SharePoint, Exchange and others.