This may be a dumb question, but I need some help. Little side note: I am a young female (25 yrs old) and recently started student teaching at a high school. My CT as well as the whole school lets the kids rule the roost in ways that they are allowed to use their phones, eat/drink, and my CT doesn't care if they put their head down and sleep all class period. These kids even have a habit of dropping the f-bomb and CT rarely cares. The problem I'm having: is that I am a small female. These students are larger than I am. I'm not intimidating at all and they know it. If I tell them to do their work, they just sit around, talk, and totally ignore me. Some students give me attitude, and straight up refuse to participate. If I raise my voice sternly and tell them they will get a zero if they just sit there, they don't care in the least bit. I've witnessed one student give my CT some attitude and CT just asked the student to leave the room. The student refused to leave and just stayed in class being a nuisance. I'm worried about how I should handle such a situation. By law, I cannot touch a student, not even a tap on the shoulder, and I can't just take their phone out of their hands if they refuse to put it down and work.... What should I do?