"Topics include communication, environmental studies, political science, social work, sociology, law, education, and tourism and hospitality."
I fail to see how tourism and hospitality (nothing against this industry!) is related social work or public health? Admittedly, I have not read their methodology report, but it seems like they just modge podged a bunch of different disciplines and grouped them under "Social Sciences?"
If you're interested in this sort of data, I really enjoy reading The Chronicle of Higher Education's reports, because higher education is their speciality.
http://www.chronicle.com/section/Data/58?cid=UCHETOPNAV
I think a year or two ago someone on SDN (Montreux?) took a close look at rankings and realized that high ranking had a strong, positive correlation with a large class size (which may be partially why JHU and Columbia which are massive, are ranked so high, while smaller schools like Yale are ranked lower -at least for public health). The rankings probably give you a very general idea of the quality of an university's education, but I don't place much stock in them beyond that. I believe that what you do while you're in school, the skills you gain, the people you meet, and of course, your happiness, are far more important than if your school is ranked #1 #5 #10 or #20.
Oh, and I noticed that the vast majority of these tops universities are in the U.S., U.K., Australia, or Canada . Global indeed U.S News...
😛