Is this your friend or are you are you a parent? Students need to learn they have a voice in their school. If a student is being harassed by a teacher they have a right to let someone know. Do you have a student assistive counselor or school psychologist? If so make an appointment and speak to them and discuss your issue with them. Remember you always have to be an advocate for yourself. This is the beginning of your future. If you feel a teacher or someone else at school is yelling at you for no reason you need to find out why. Please be respectful and try to find out why. If you do not get the answers you want seek out the counselors or Assistant Principals in your school.