I volunteered weekly in DS' Kindergarten class last year so I got to see all kinds of behavior. His teacher sent home little slips of paper for behavior issues. Her biggest problems were:
Kids that can't keep their hands to themselves.
Kids that can't stay seated when they are supposed to be listening or working.
Kids that don't follow safety rules (e.g. no running indoors.)
Kids that talk when the teacher is talking.
A LOT of the day was spent on managing behavior. That was one reason DS wanted to skip to first. He was very frustrated by the other kids' lack of self-control.
