I was relentlessly bullied in high school.
I subscribe to the Mongolian maxim that revenge is a dish best serve cold.
I pretty much dealt with the bullying with quiet, stoic dignity until the bully turned 18. Then, when he went COMPLETELY over the line and ended up giving me a concussion bad enough for me to miss 2 days of school, I had my parents press assault charges against him. He ended up with an "assault against a minor" conviction.
He'll never own a gun, be able to have a clearance, work with children, or win a custody battle ever again in his life.
Bullies need to know that if they pick on the smart kids because they are smart kids, that their victims will eventually have their revenge, and it will last for the rest of the bully's life...