wow i had no idea that yelling was such an acceptable way of communicating, especially from people who work with kids.
we all have our moments but constant yelling and screaming is not beneficial to the children and it is really sad that this is okay by everyone. I know that calling to report them is not the most ideal situation at this point and i wouldn't call prematurely but i would rather call and have it be nothing than to watch this go on and something terrible happen.