Carnegie Mellon University

Figuring Out What To Do and Where To Go

http://sciencewatch.com/dr/ has data and ranking information, as well as information about what is hot in science today.

This article (http://chronicle.com/free/v53/i19/19a00801.htm) discusses how schools are ranked, and provides resources to different ranking indexes.

This website http://graduate-school.phds.org/education-index may help you sort through the rankings and identify potential schools.