My son was "that guy" when he was in kindergarten. He is a fun and very active boy with some sensory processing qualities that make it very hard for him to sit still for more than about 18 seconds, especially when he is thinking. His 60 year old, hard working teacher drew on her decades of experience to do what she could to help him and to help the other kids not get too distraction. We got to talk to her a lot. She was limited by things beyond her control like outdoor recess getting cancelled almost half the time for the kindergartners because of snow, rain, chance of snow, chance of rain, wind or not having enough staff. Being inside for 6 hours did not make for a easy day.
In the end, we realized that 21st century Montgomery County schools were not the place for a boy like him and, in the end, we homeschool him.
Some kids (usually boys) just can't be managed by the system. Apologies to those other kids in the class.