I think youre allowed something like 3 per household..
realistically speaking, they don't ask proof of being a student anyway so you can get away with ordering another under someone elses name but that all depends on your morals e.t.c (as some people were previously flamed over this).
I'm a student so I got mine the legit way but even if I wasn't I probably would've done the same, it's not like apple are making a loss if you buy it with the student discount.
anywho to each his own