My dd is almost 6 years old and has just gone into year one where all the friendship groups were mixed, she is now with one of her best friends who is in the younger half of the year whereas my daughter is one of the older children, you can tell as my dd friend is very immature, she also messes around in class, is rude to teachers and generally silly and naughty in school, my dd before had other close friends in her class and could get some space from this girl but now I am told that this little girl clings onto my daughter and doesn't leave her alone much. My daughter has now started being silly in school and getting in trouble with the teacher and every time I ask her why or tell her off about it her reply is always "well best friend always does it!" I have told her if her behaviour continues I will ask the teacher to make sure that they cannot play together at school anymore, AIBU to stop this friendship? They have a lovely little thing going on but I really don't want my dd behaviour getting any worse due to this other child, especially at school. I have told her time and time again that she is the older of the two and should be the one telling her friend how to behave but obviously messing about and being silly is a lot more fun!