I think Microsoft is attempting to target students more aggressively, perhaps because of the appearance of other cheap/free options on the market in recent years. Just last year Office 2007 was on sale to students at $60.
[1] https://www.dreamspark.com/default.aspx [2] http://store.digitalriver.com/store?Action=DisplayStudentHer...
My school (even larger and state supported) charges like $92 for the same thing.
I've not figured out why two almost identical schools about 20 miles apart have such a different pricing scheme for their students.
I do know that in our relationship, my wife buys all the software. :)