I don't have the game installed. But pretty sure you can let it install into c, unless it's not allowed, seeing as it's a school computer, and move it elsewhere later on.
Or if not that, then you bring an external hd, with everything already installed, and run it like that. note: Probably need to set your hd to first boot via bios and have windows installed there unless you don't mind moving files into c when you want to play, then deleting them when you're done.
Human history is the story of complaisance. While disaster is fresh in our memory, we take precautions. But as the memory of disaster recedes, we start to take risks.