I've had it since year 7, and I'm currently in year 10. They stopped at the beginning of this year. Why?
Because I stood up against them.
When I was younger, they used to hurt me. A lot. Physically and mentally.
You know, it's hard to think about it, but you do and will get over it. You just gotta know how to deal with it. When they threaten to hurt you, either directly act not-scared, or just turn, and walk away. You're the bigger person, don't let them try control you. Try telling teachers, and parents as well. Mixed together, they will more than likely stop majority of bullying.