Where did you get your 2013 student license?
If you got it from your school - your school should supply you with the activation key.
My school has about 100 computer with solidworks on it so students can have solidworks at home
I went http://www.solidworks.fr/sw/education/SDL_form.html
I made a request that was granted to me, I downloaded the setup but I can not receive a license key.
Please excuse my bad english ...