Checklist surveys are helpful assessment tools. Stephens recommends annually reviewing all aspects of a school-safety plan. A security assessment by an independent consultant has several advantages. An independent specialist brings objectivity and credibility as well as expertise, and can give professional validation to existing security measures as well as recommend improvements. To target security efforts where they are most needed, an analysis of school-crime data can identify patterns in crime types, locations, and perpetrators.
Metal detectors are an expensive and controversial option.
Their potential usefulness for a given school depends on many factors, including the severity of weapons problems, the availability of funds for staff and training, the physical design of buildings, and possible negative effects on school atmosphere. They are particularly effective in keeping weapons out of events that take place in a confined space, notes National Alliance for Safe Schools Director Peter Blauvelt. Further, if the emergency team personnel had known where the shooters were in the building, they may have been able to save lives. Increasing supervision by adding security personnel is another option. Stephens cites the pros and cons of employing local police, contracting with a security-guard service, or hiring security professionals.