Has the kid gotten "in trouble" at pre-school and school before?  Yes, of course.  That's normal.  Yesterday I got a message from the teacher that actually bothered me... but even as I type that I back up and think of Sheldon on Big Bang Theory when his mother told him that it was okay to be smarter than everyone, you just can't tell them that.  Is it "being mean" if a word spoken is technically accurate?  Yes - even in a world that tell us to be blissfully accepting of being this word.  I was disappointed.  We talked.  She cried.  She isn't a mean kid, so it was hard.