my classmate are bullshit

I never liked my classmate,they are bullshit and fake.
they bullied someone and then when the teacher showed up,they acted as if nothing happened and even said "what?no,I don't know anything" you don't know anything?well,you bullied her even on internet so shut the fuck up.
They called me bad,annoying just because I told our teacher they smoked.
They hate me,and so do I.