Requesting a child not be in my daughter’s class next year

Has anyone done this? Was it kept confidential? My daughter is “friends” with someone and it is NOT a positive relationship. I do not like the idea of another year of this. Problem is I know the mom and it would be total drama if it got back to her. I know you are thinking “why don’t you talk to the mom?” We kinda have touched on some matters and it’s always putting blame on my child and her child is just being “silly” so I don’t think the conversation would lead to anything positive. Id rather them just separated with some space next year.