A study from the Johns Hopkins Bloomberg School of Health released in October analyzed the effectiveness of guns for deterring crime on college campuses.
Statistics in the study show neither "gun-free zones" or right-to-carry- laws impact mass shootings in public places. The study also showed a small percentage of shootings in public places were stopped by a citizen who had a gun.
Johns Hopkins professor Jon Vernick said arming faculty, staff or students could be risky.
"There's really no reliable evidence that bringing guns onto campus would make the campus safer and there's a lot of good reasons bringing guns into a college environment that could actually make that college less safe," Vernick said.
While the study looked at crime on campuses, the Center for Disease Control said that overall, deadly shootings are down 50 percent since 1993.