I don't think the real question is ethnic background. I think the question is more what your rights are. If the dress code says that you cannot wear kilts to school or school activity's then subject over. However IFF (IF and only if) it does not say that you cannot wear a kilt then there shouldn't even be a reason for him to be saying anything against it.

Longhuntr74 I'm not going to say I'm not a rebel against authority. Because I am most of the time. However most of the authority I have seen with schools aren't the smartest people when it comes to stuff like this. Especially when they feel threatened.