Know-How Exchange : Research/Metrics

I am doing an MBA business project on the success of Universities who have engaged in social media and am having trouble finding quantifiable data. My main focus is defining what return on investment these Universities obtained by engaging in social networks and mediums (i.e. - how many new students gained or actual numbers on the "positive feelings" generated). Does anyone have any suggestions for white papers, research studies, or articles about Universities in particular?

So far, I have seen plenty of Universities joining in the social network revolution (i.e. Stanford and Texas A&M), but little of what they got back other than number of followers and fans.

I am on a student budget, so free resources are a plus!

Erin