i think not only should teachers be allowed to carry weapons, but students too. that way if one student tries a school shooting he gets shot dead by the rest of em, same with teachers
teacher:"okay, everybody, on the ground!"*pulls out gun*
students:" fuck you!"*blam blam blam blam blam blam blam*
teacher falls down dead on floor and replacement teacher walks in. they should have a line of teachers for everyclass in case this happened