Security Solutions to Prevent School Shootings
The first solution that comes to mind is walk through metal detectors at entrances to the building. This becomes a first line of defense to stop weapons, especially knives and firearms, from making it on to the premises. This tactic has been used in inner city schools, which traditionally had high incidence of violence, for years to great effect. Additionally, students became acclimated to the devices and they did not disrupt the learning environment.
Another way to prevent dangerous materials from entering the building are X-ray scanning machines. These devices will allow security personal to identify any weapons, drugs or other prohibited materials from entering the building. These can be as small as a simple box that would allow a bag or backpack pass through for immediate analysis and identification. These can be less intimidating while still providing sufficient protection from unwanted incidents and are not limited to only detecting objects with metallic properties.
Further schools should control where people can enter to better monitor who is coming onto the property. Unfortunately this is easier said than done depending on the campus layout. It is important to lock unnecessary entrances and force people to enter in one location if possible. This improves the effectiveness of metal detectors and X-ray scanners as there is no way to get around them. Electronic door lock should be used to prevent unwanted people from entering through back or side doors.
Surveillance Cameras at Entrances:
Surveillance cameras should also be placed at the entrance or entrances if necessary to capture footage of everyone who visits the location. Facial detection or recognition features could also be used for further insight on who is coming and going to identify suspicious individuals. You could also be alerted if previous suspicious individuals try and return to the property.