I am currently teaching 12th grade chemistry. One of my students is a few minutes late every day. I have talked to him about this several times, and he always says he'll come on time the next day but never does. He might actually be doing it on purpose to annoy me, but I'm not sure. Students know that being late is one of my pet peeves, and lateness is a rampant problem at my school. (For me, the hallway outside my room is noisy, so my door is always shut. When someone is late I have to stop my lesson and open the door for them. Also, my room is set up with immovable lab benches that make it difficult for latecomers to slip in quietly. It's hard to explain, but it's very disruptive. I also have so much content to get through that I start teaching right when the bell goes). Once this student arrives to class, he is not very engaged. He doesn't take notes, has a bad attitude, etc. I alerted his homeroom teacher and we had a meeting with the student's parents. I told the parents my concerns, but nothing has changed. The student continues to show up late and does minimal work. Also, today he told me he was late because he was talking to his homeroom teacher. When I followed up with the homeroom teacher, he was not. She says he lies to her quite frequently as well. My question is - what now? Do I take this to my admin? This seems like small potatoes and I'm afraid I'll look bad for referring a student to admin over being only a few minutes late daily. I also don't want to look like I'm undermining his homeroom teacher, who says we've already done all we can for him and at this point we should just let him fail. I'm fine with letting him fail the class if he puts no work in, but the being late stuff really bothers me. Does anyone have advice?