Huh, not sure how I missed that. You're right.
However, she did say that since she's working with third graders, the words she hears most often are; stupid or retard. In the case of those two words, I do think that school is doing the right thing in making the punishments different.
Should a group of third graders at her school, suddenly start calling one another fat, n words or slut, I'd like to think an appropriate punishment would be found, but it may not be the same one the one handed down for calling one another retard. And, I think that is acceptable, but obviously we disagree.
I am the teacher you are referring to, and you are exactly right. I know it might be hard to believe, but I just don't hear that language in my classroom or my school. In all honesty, if someone called another a slut in my room, I would immediately call the parent and it would be an automatic detention, without discussion.