Well, I I took some time to read about MSDNAA.
On that page Sofi posted it says:
"Are you a Technical Student? (MSDNAA) Click here" Which means that MSDNAA should be available to all technical students, not only IT.
However here:
Student Resources
it says that MSDNAA should be available to all university students and I don't see any info on why should you not be able to download from there. It just seems to depend on the school you're in.
Here every student has his own student ID and password used to log in to an online platform where we can do basically everything about our studies (check test results, e-learning platform, download lectures, write petitions and check our documents/payments etc.). We use the very same student ID and password to access MSDNAA.
However each year the Microsoft department at our university sends us some guys to inform students on MSDNAA and how to use it so I think that if you are authorized to use it they should also somehow notify you.