I am bullied a lot and need some help?

im 16 a guy am bullied in school a fair lot not usally by the same person mainly spread out between a good few pp. i have got a lot of help from my parents whom ive told. the problem is a lot of the bullying has shaped who i am i tend to be great and farily smart away from the school or town but i have become a parnoid nervous person who has a can say a sentance without making a of it. i can not defend myself cause i am not an angry personand i find the people who slag me tend to be boosting there popularty by slagging me. my dad great man that he is suggested that i break the next persons nose that wont stop slagging hitting ect. i do a lot of kickboxing so that may fit me to the task but i use it for anger mangment and it works well! but somtimes the guys just get to me and i was wondering is this the right corse to take i know it probibly will work as the person will prob not ever want to say a bad thing to me again but not sure if i want t