The NRA’s faulty school-security proposal - The Washington Post
...A greater police presence in schools can also increase student offending rates. Research has repeatedly shown that schools can prevent student misbehavior by establishing positive social climates. Students do better when they feel respected and listened to, like a valued part of the school, and when they view school regulations and actions, including security, as fair. Introducing more police into schools can undo these efforts, making what had been an encouraging learning environment, where students are partners in an educational effort, into more of a place where students are subjects of school rules...