Even if you assume that there will be no misunderstandings or accidents there would be a whole host of procedural and logistical issues .
What training would they require - just gun range practice or realistic stress environments with moving targets and multiple innocents to avoid?
How often would they require the training, who would design it, who would certify the teacher passed and how would it be paid for?
Which types of guns, who would buy/maintain and what types of storage procedures would be used?
Would it be voluntary for teachers, what additional background checks will be required and would there be any additional salary for the role?
If they are injured, or injure someone else, whilst using the gun who is liable for medical or legal bills?
Will other teachers, students, law enforcement know which teachers are lawfully armed and how will they communicate that information during an incident?
What are the rules of engagement - can they shoot a kid armed with only a canteen knife? How about kid with a baseball bat? And what de-escalation steps will they be trained in?
Utter, utter madness
