I understand they moved the teacher out during the review. But they left the suspect in the classroom to do what, stab another teacher?
They didn’t move the teacher, she refused to go back to work until the administrators at her school dealt with (punish) the student who threatened her. The school didn’t want to take that student out of her class, much less suspend her. The school district even tried to move the teacher to another school, leaving that thugette in the classroom.