From my limited experience - bullying is prevented by having friends. Groups of people don't get bullied, loners get bullied. Once you develop a little circle of friends, you'll largely be left alone. So the key is to give people enough time to develop friendships - in Russia, I had the same classmates, give or take, for years. The students were separated into gradations of capacity where those who got straight As (i…
Collectively we were the target of bullying. Our academic excellence (and thus copious free time) was the direct cause of being targeted. When you pound out the 50 problem worksheet in 20 minutes, and have the remaining 30 min to draw, imagine stories, and live in a shared fantasy world with that small group it's REALLY easy to be targeted.