Eegore wrote on 05/29/22 at 22:45:14:"...  Incorrect, they can use the minimum amount of force necessary to stop the assault. ..."  
A school teacher, 
that is less physically capable than a
Violent Student, is the norm. 
So using the 
"minimum amount of force necessary to stop the assault" would be a stretch. 
AND, that teacher, would have to PROVE,
beyond any shadow of a doubt,
they believed their life was in danger,
and no way else, except striking the Student back,
would save their life.
They cannot Stab back. 
They are NOT ALLOWED to have a knife.
A Student with a knife,
has a distinct advantage over someone without.
They cannot shoot back. 
They are  NOT ALLOWED to have a Gun.
A Student with a Gun, 
trumps all physical differences.
"... Incorrect.  
No teacher anywhere has to allow a student 
to murder them ..."Golly Gee, If a Student is bigger and stronger than the Teacher.
Or if the Student has a knife, gun, baseball bat, hockey stick, etc.
Don't think the, teacher, has much choice.
  "...Just be honest and say that,
 not allowing a teacher to be armed,
 greatly reduces their ability 
to defend themselves and others, 
especially in events 
where the assailant is armed 
with a weapon of their own.."Great Idea, 
instead of you saying:
"... No teacher anywhere
 has to allow a student to murder them.
They can defend themselves..."