When I was interning in a fifth-grade classroom, there was a girl that was considered gifted. She was very intelligent and her work definitely showed for it. However, she was very disrespectful and disobedient. What could the teacher do to deal with this student?
If I were in this situation, I would do exactly this. It is important for teachers to first find out and understand the root cause for students acting out in order to be able to go about finding a solution.
FInding the time to work with the student one on one and involving the parents is a good idea. Without talking to the student about why these things happen, there is little reason to believe they will be able to effectively stop the behavior.