Beckibee said it well, I agree totally. I also keep out of my DD's battles (so far they've been very minor). Luckily DD "confesses" easily if she's in the wrong. However her occassional best friend is quite manipulative and I think she's learnt this from her mother so I keep my distance from her. Contacting the teacher occassionally is a good idea. Not about ever little issue but if you pick your moments then at least it shows the teacher you are switched on to what's happening in your child's day. I also agree that it would be a good strategy to tell the other parent who called you to contact the teacher... maybe if you see her afterward at school you could ask her if she'd spoken to the teacher and see if she has the decency to apologise!