My Kid Is 6 Years Old Boy. He Is Extra

My kid is 6 years old boy. He is extra intelligent but the school repeatedly complaints about behavioral issue. They are repeatedly asking for medical attention through professional doctor. They even demanding to join programs run by school for individual student development course.

There is no problem with my kid with respect to any medical condition. He is just ok and a little bit impatient. He just can not sit continuously on a same place. Please advice me.