A researcher at Texas A&M International University has concluded that there is "no significant relationship" between school shootings and playing violent video games.
Writing for the Journal of Investigative Psychology and Offender Profiling, Prof. Christopher Ferguson criticizes the methodology used in earlier research linking games to violence and aggression. He also points out that no evidence of violent game play was found in recent high-profile incidents such as the Virginia Tech massacre, the Utah Trolley Stop mall shooting and the February, 2008 shooting on the campus of Northern Illinois University.
I never thought much of the theory that video games caused violence. The New York Times did a study of rampage killers and found that very few of them even played video games. They looked at 102 rampage killers and found "in only 6 of the 100 cases did the killers have a known interest in violent video games. Seven other killers showed an interest in violent movies." School shootings are complex, to blame them on video games is naive. I am glad a researcher is making that point more clear.