There's no other way I can phrase it except to call it tattletaling.
My ds ran out of his classroom today at pick-up (half-day kindergarten) to meet me and yell, "(Girl's name) pushed me and yelled at me and tried to trip me!" ... and then, when he caught sight of the girl's dad there, ran over to him to tell on her to him.
This certainly isn't the first time, but it is the first time I noticed the teacher and the other parents glancing at me to see if I fell all over him.
I gave a small smile to the girl's dad and mouthed "Sorry!" as I asked ds to come out to the car with me. The girl's dad was friendly about it: "Thanks for letting me know, (ds). I'll talk to her about it.", and he was smiling and chuckling. His daughter and my ds are a lot alike (same birth month, youngest in class, he's an oldest/she's an only) and they don't get along very well.
I don't want to react out of embarrassment, but the teacher's rules (which are similar to mine at home) basically state that if you're telling on someone because they might be hurt/bleeding/etc., and you want to keep them safe, then that's okay -- but if you're telling on someone to get them in trouble, that's not okay. I would agree, only the times I've explained it to ds, he takes the loophole of being able to tattle if "Someone is being disruptive!" -- his words, not mine, after he heard my mom (teaches 2nd grade) describe her rule of "Dangerous/destructive/disruptive".
How do you all handle this? I can use some solid wisdom here.