Parents are an answer, but they aren't always willing to give their own time to help even though they claim to be so caring. In my opinion I think that school shootings aren't good, but ther is no way to get rid of it. The only way I think it will be prevented is when there is complete and final action taken by providing schools with security and metal detectors around and in progress during school hours. This problem, I beleive will never be fixed because of the fact that it has been avoided since Martin Luther King, Jr. tried to fix it and it is still being avoided. They see a lot of things on TV and think that its all real and they can get away with it.
Some people blame it on the parents but no one really knows what their child is capable of doing.
That's why I feel that when a child makes a threat then it should be taken seriously and not as a joke. I do not agree with some of the points that you made in your message. I believe that it causes even more harm if adults can bring guns to school. A good example of it would be, for instance, An adult is walking in the hallway and is carrying a gun. At the same time an angry student is walking through the hallway and sees the gun.