So at what age By Cathy-Dee

In a very loud voice.
Jim, what are you doing out of your seat again, get back into it, if you don't sit down I don't know what I'm going to do with you. I'm fed up with you. I'm sick of this behaviour! Now sit down and don't move again!

By loud voice I mean screaming - you would be able to hear the teacher several classrooms away even with doors closed.

This to me is not professional, it means the teacher has lost all control of this student and the situation. And I really can't see how an administrator can help this problem except to move that student to another class. I have actually cringed walking past another teacher's classroom because as the yelling is happening a parent is walking by too. What an example to set to the parent.

And sometimes it's not even as polite as I've stated above.

I know the older grades can be difficult and there are situations that occur where a teacher might end up yelling. But.... for the most part, yelling is not acceptable. And at what age does it become acceptable. With 8 year olds, 12 year olds, 16 year olds.

I really don't think demeaning a student is going to help any situation. Yelling is demeaning - there is no other way to look at it.

I agree with Trish, if I was an administrator and walked by a classroom and I heard the substitute teacher screaming at kids - that would be their last day at my school. If it was a staff member they would be talked to. And I do believe most administrators recognize the difference between using a loud voice to get attention and yelling at students.