You could take a look at the TRIP survey out of William and Mary--it's a survey of IR academia and one segment of it is ranking of PhD/MA/BA programs, U Denver is #11 for MA and TAMU doesn't make the top 19 listed in the results (page 27). I just looked at the Foreign Policy mag rankings, and those are pulled directly from TRIP which tells you how reputable the survey was. I wouldn't put much faith into US News rankings etc.
