Why should teachers not be allowed to carry guns at school?

This is a 4 page position paper for my high school government class. It must include at least 5 sources with end notes and a bibliography. It must be typed in times new roman font size 11 double spaced, 1” margins. The paper should include the issue/ problem, an in depth history of the problem. your opinion, what are/ have been some attempted solutions and a proposed solution/s.