When I was trying to decide what departments to apply to, I was directed to a few articles on placement of graduate students by different programs:
http://www.people.fas.harvard.edu/~chin ... _paper.pdf
http://papers.ssrn.com/sol3/papers.cfm? ... id=1008028
I'm not sure how to fully interpret the rankings, and I'm sure that there are a lot of problems with either methodology. But it does seems that there is a similar set of schools at the top of both lists (say 10-20), and below those schools, the odds of placement are pretty low. Something like 1-10% compared to 20-50%. Once again, I could be reading this wrong though.