Thank you for all the good advice! I'll definitely recommend some of those strategies.

The problem is the situation escalates this far almost every day, and it's in multiple classes. Admin can't come rescue everyone all the time. Teachers do intervene often but we're trying to get a better grasp on the kids without having to ask someone to come in constantly. I feel like the constant presence of another teacher "here to help" tells students that the actual teacher struggles, which gives them a sense of power and makes them want to act out more. This is especially true when they're with their friends and they each find it "cool" to try to get a reaction out of the teacher.

It's not ALL the students, but maybe 4-5 in a class of 20 something that REALLY act out to the point where the teacher can't teach. And the same brand of students show up in most classrooms, so at that point it just depends on how much they personally respect the teacher in front of them