How could you help? You could talk to the bully in an assertive way. You could tell someone about what's happened. You could talk to the person who is being bullied and comfortable them about the situation.
Who you should talk to. Mrs.Thornton: She is a counselor she has experience and can help you by having a one-on-one conversation with you or the bully and help you and the bully. Mr.Leonas he is the principal he can help by talking to the bully and possibly issue a suspension and end the bullying.
Bibliography. My brain, PE class, experience, bullying and peer pressure slide show.