What do you mean it has nothing to do with Kimberly? If her kid might be sitting next to this boy next year then it's got everything to do with her.
No need to bring yourself down to personal attacks on Kimberly. Suggesting she's being gossipy is bloody ridiculous. If she was gossiping she would expect to get information from the principal.... She doesn't! If she was gossiping she would be talking about going around telling all the parents.... She's not! She's planning on talking to the principal, presumably in the privacy of his own personal office.
Why is it so hard for people to believe that Kimberly is concerned for her own kid.