Hi joshhamel,
The Windows 7 Upgrade for students at the site jefe323 linked you to is a special price of $29.99. This price will not last forever as the usual student pricing is $64.95. However, you do need to have Vista or XP on your computer (and meet the student requirements found on the site) in order to use the upgrade copy.
Hope this helps!
Cheers,
Cassandra
Microsoft Windows Outreach