The deal doesn't just apply to U.S. students, however, as Canadian students also qualify for the deal which started on the 18th. In order to be eligible you will have to be a high school or college student with proof of status, like a campus ID or an email address that ends in .edu. If you qualify, you will receive a 4GB Xbox 360 with the purchase of a Windows PC for $699 or more. If you're a Canadian student, you only have to buy a $599 PC.
The Xbox that students will receive is Microsoft's current $199 console, which is the lowest priced model the company offers and the one that doesn't come with a Kinect motion sensor. Best Buy was the only retailer partner that Microsoft paired with for the offer the last time, though the company has greatly increased their partners this time around. In the U.S. Microsoft is partnering with Best Buy and Fry's Electronics while the company will be teaming up with Best Buy, Future Shop, Staples and The Source in Canada. You can also get the deal online through Dell, HP and Newegg in the U.S. and through Dell in Canada.
If you happen to live close to an actual Microsoft store, you can also get the deal there as well. There are 21 Microsoft stores currently open (or expected to open in the summer), all of which are located in the United States. Microsoft's online store will also support the deal. Also new this year is the amount of control Microsoft has left in the hands of the retailers. This means that the deal won't last the same amount of time for every retailer so make sure you check your dates before you go in for the deal.
Source: PC World - Buy a Windows 7 PC, Get an Xbox