Thanks for your thoughts ladies. I talked to the mom right away about it, gently. I actually had no choice because my assistant had mentioned how loud he was that day and two of the children did also on separate days complain how he hurt their ears, or that he was very noisy.]
So when she brought up what they had said and asked if it was a problem I used it as an opportunity to say that yes, we have noticed that he screams and it seems to be out of anger when he doesn't get something fast enough, or that he wants. So it is something that we will have to work on to curb the behaviour just because I do see that it scares the other kids. But that it's only been two weeks and that he is teething so it could be from that. So its not a big deal yet, but if it continues for 3 or 4 mths then it might be.
The mom looked so worried she was almost in tears. So I told her not to worry about it too much yet. That other than that his transitioning has been going really well and that He's still little and has simply learnt that this "tone" gets him what he wants ( thank you mom-in-alberta for that one). So we just have to teach him how to communicate his needs a bit differently, by maybe using her "mommy voice" to tell him no, we don't scream angrily and not providing him with whatever he is screaming for so that we can also work on teaching him how to be more patient which is needed in a group setting, and giving lots of positive feedback when he does use a quieter sound or points to what he wants instead or doesn't scream.
She said oh, ok, i was really worried that he wasn't a good fit. And I said no, no, we think he fits in greatly, its just the screaming that we gotta work on so that the other kids don't get aggravated and scared. So as long as we can work on this together from both our sides it should be something that we can get through.
So all your points were very useful ladies. I definitely used your suggestion Alphagethi in suggesting that she says ouch, that hurts my ears, and teach him more firmly to use his quiet voice.
And Judy, your post gave me strength to confront the situation and tell her that it could be a problem if it continues for 3-4 mths if it is affecting the quality of the other kids stay here. (I don't have the guts to let him go after a month because I feel like he might need more time cause he's so little. But if it was someone older, like 18mths, I will definitely take your no nonsense attitude and will terminate if I find myself in that situation) I actually have one little part time girls who has been with me for a year who still throw tantrums and scream like they did at the beginning and I wish I had come across this forum then, because now I feel that I'm stuck with her as I've put up with that behavior for so long so how could I let her go? The problem is when I get good parents. If I love them, and they are good to me i find that I put up with a lot more which I hope to put an end to with new clients.