I'll add to this that DS9's school has different standards for behavior in kids in the first grade or younger.
Every now and then something would happen and someone would get wound up and the principal would send a mail around saying "As you all know, our expectations for the very youngest children in the school are different...they are all still learning about being in a classroom...etc. etc." Kicking stuff definitely fit into this category. Playing "The Haunted Bathroom" in kindergarten was another typical example of behavior that was not allowed but was also dealt with via a note asking the parents to "please discuss this at home."
Val
