Metal Detector In School

Do you think that all schools institute metal detectors to enter the school?
In view of other students to bring a firearm (even though it was be a pellet gun) to school, do you think America will have to turn to this? School violence is increasing and there is a way to curb this violence?
Unfortunately, I think in all urban areas should do this. But this does not happen only in cities, is beginning to happen in the suburbs too. I think it is for the school. If you know you're in an area where there is rapid growth of activities such as gangs or gangs, then it should be obvious. As for suburban schools, I think a medal detector can be a bit much, but they must have at least a couple of guards on hand. Just in case. In five years, they predict that a quarter of U.S. schools have no detectors medal of any kind. Because that's how bad it will get. Triste.
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