"What our schools need is more people who can serve as antibodies, watching out for troubled students and offering them help."
Social institutions are like organisms. This is the fundamental metaphor of the great sociologist Emile Durkheim's vision of society. In the case of schools, teachers have to be on the lookout for troubled students. The English teachers were on the job at Virginia Tech. The ball was dropped at the next stage, and the law prevented Cho's parents from being notified – something I wrote about last week.
Page also notes that students do tell teachers about scary students. They are even more likely, though, to go to trustworthy outsiders who are in the same "cultural zip code" as the students. Page promoted the idea of adult volunteers in the schools to be the antibodies to violence, to be the response system to distress.
Each of us sometimes runs across people who are sending out warning signals. It is our duty to them to notify the authorities, and an even greater duty to the social whole.