I'm eventually going to buy myself an iMac for school and plan on using the educational discount. I'm just waiting for the next iMac upgrade Apple will eventually release. However, my sister wants to get an iMac next week and I'm wondering if I can save her 50 bucks by using the education discount if I say it's for me when we buy it. My question is how do you prove you're in college when the purchase is made? Do they remember you so you can't get two discounts in the same year? Thanks P.S. What do you get if you divide the circumference of a Jack O Lantern by it's diameter?