Although some may be compliant, most gifted children have trouble with authority, especially when they know they're right. I have often corrected my teachers on their grammar and spelling (they have no problem with it), but back in fifth grade, when I argued over morality with teachers (calling kids who cried "babies, yelling at the teachers in the last quarter about their rewards system which may squelch children's self-esteem), I was called, "arguementative". In my opinion, I thought that I was right and that the teachers were being insensitive, and I probably was. Gifted people have those "issues" because they know they are highly morally and intellectually sound than most, and if anyone dismisses your child as "arguementative", know in your heart that he is intelligent enough to not be a sheep and have his opinions!
