They showed one elementary school where the entire organization (teachers, students, staff etc) implemented some kind of holistic approach to bullying that actually worked. They even interviewed a group of kids where they said "Oh yeah, Tom used to be the bully and we were all afraid of him but now we're all best friends".
I don't remember the exact plan implemented but it struck me as both simple and common sense with excellent outcomes.
Despite much searching on IMDB, Twitter, Google and even using LLMs, I have yet to find the exact episode. Now that I have kids of my own, I'm even more interested in finding it. Any suggestions from the HN crowd?