To All,
Just to muddy the waters a bit I would not want a teacher, or even a lone security guard, armed in setting like that.
A vicious pack 12 - 14 year olds could easily overpower a lone person and take a firearm from them. In this particular situation an armed teacher could easily become an armed student in a matter of seconds.
When we talk about solutions we tend to think of all schools and all classrooms being similar. In that they have students, teachers and walls this may be true, but that is also the end of similarities.
My point is that there is not a one size fits all to any problem.
Regards,
Doug
= don't have a gun at home if the robbers come they will use it against you as well.