This teacher doesn't even know basic U.S. History. How is she qualified to teach at the 6th grade level? Also if the student was sitting how was he being disruptive? It sounds like she tried to force him to do something that is unconstitutional then got upset that a 6th grader is smarter than she is.
What the hell are you talking about? This story contains no details. All it says is that the kid insulted the US and after a couple back and forth the teacher called in the dean, after which the student was physically disruptive. How you go from that to leaping to the conclusion the teacher is in the wrong I have no idea.
