The kids in my life are young at the moment, so I'm biased towards the experiences at those younger ages – and certainly more poisonous structures lurk as they get older. On the other hand, I'm not sure why you think I'm talking about school. The article is mostly not about school, and my reaction isn't about school, it's about the hours outside of school.

And no, preschools do not generally allow children to be physical with each other, and they tend towards rule-based conflict resolution instead of direct engagement, which are some of the specific examples I brought up.