[Frenetic74]

How can it be endangerment if what the teacher did didn’t put anyone’s life at risk? Emotional distress is not endangerment.

[eastforker]

You bring aa blank pistol into a bank and attempt to rob it, you will be charged with armed robbery! It’s not the fact it wasn’t a real firearm, it is the fact he wanted everyone there to believe it was.

[TigersEye]

Twelve high school-aged boys thought they were being shot at in a shop class. You don't think the possibility was high that one or more of them could have taken action to stop that and in the process injured or killed the teacher or themselves? You don't think that in a panic they could have injured themselves?

And if one or more students had killed the idiot teacher they would have to live with that, after finding out later that it was a "joke," for the rest of their lives. Not their fault but you can bet it would haunt them.

Yes, he put people's lives and limbs in danger.