Phil Baty, deputy editor of Times Higher Education, acknowledged that Alexandria’s surprising prominence was actually due to “the high output from one scholar in one journal” — soon identified on various blogs as Mohamed El Naschie, an Egyptian academic who published over 320 of his own articles in a scientific journal of which he was also the editor.
In 2009, an administrator at Clemson University in the U.S. revealed that the college had "... manipulated class sizes, artificially boosted faculty salary data and gave rival schools low grades in the rankings' peer reputation survey" with the goal of improving its U.S. News & World Report college ranking. This helped the university rise from #38 to #22 over a seven-year period (2). A few weeks ago, Emory University admitted it had also manipulated data/lied over a period of more than 10 years in order to improve its U.S. News & World Report ranking (3).
My takeaway from these incidents: Not only are university ranking systems imperfect to begin with, but it's also possible to game the system ... and it happens every year.
1. New York Times: "Questionable Science Behind Academic Rankings" http://www.nytimes.com/2010/11/15/education/15iht-educLede15...
2. USA Today: "Clemson official: School manipulated rankings " http://www.usatoday.com/news/education/2009-06-04-clemson-ra...
3. Reuters: "Emory gave incorrect data to publications that rank U.S. colleges" in.reuters.com/article/2012/08/17/usa-emory-ranking-idINL2E8JHNG320120817