I was called names as a kid, as was dh, and probably most of you. Kids are cruel, always will be. I see so many mum's at school complaining as their child is being called names.
My ds is short for his age, he gets called small fry, shorty and midget. I talk to him about how he should deal with that, ignore them and rise above it. I would never dream of complaining to school, as suspect my ds is just as likely to call others names too. So I remind him how hurt he feels, and how he should not do it to others.
I asked him what names the other kids get called, and it's the usual stuff. Same as when I was a kid.