yes you can. altho last time i did this was like in 2004, so it seems for *some* places the rules may have changed. Boston is a student city so maybe they are more willing to accept (?). Anys, when i bought an Apple accessory (not 3rd party) alls I had to do was show my ID, and the guy made a photocopy/scan of it and that was it.
Like Spritey said, anyone can log into my unis Apple Store, and just buy. But the deal with the edu discount is
1 mac computer per year:
"
Desktop: One (1) may be purchased per academic year
Mac mini: One (1) may be purchased per academic year
Notebook: One (1) may be purchased per academic year
Display: A maximum of two (2) may be purchased per academic year
Software: A maximum of two (2) per software title may be purchased per academic year
Apple TV: There is no limit on the quantity of Apple TV purchases per academic year
iPod: There is no limit on the quantity of iPod purchases per academic year"
Accessories not included. Also, if the steeper the discount (again, depending on the uni) the more checks in place. It really depends the relationship your uni has with Apple.
I mean our comp lab has 1/3 Apple iMacs, 2/3 Dell. Always has been. The online portion is just a jump to the uni computer lab homepage and from there they provide the link to the uni custom store; actually no login required.
No Worries!

happy to help but I think it was thechildz with this tip. But I can provide you with this tip. Tufts is selling Leopard for
$116. But Harvard is selling in for
$69. Duuude, go figure. so anys, i'm clearly gonna get it from harvard.
So, at $69 is it still worth the ADC discount?
@thechildz How much is 20% the computer you want?