On Friday, I saw a student with her paper turned around showing another student her test. Her privacy folder was down, when it was supposed to be up. I turned her test around and made her put her privacy folder up. However, I noticed that both students tests were identical (even in terms of the work written in the margins, etc.) and including wrong answers. The students sit diagonally from each other so there is no way this student would have been able to see her answers otherwise. I know that I should have taken tests in that moment but I didn't. Student denies sharing her answers with other students. I am 100% that if I retested the other student, he would fail. This is not the first time her answers ended up on other students' papers. I had another student who had the same answers as her for another test, but he had a different test version and failed. Again, they were sitting diagonally from each other so he should not have been able to see her test. This student has been rude/disrespectful to me and I have just emailed mom since she has been chatty in class. I emailed mom to let her know of the situation and that the test needs to be retaken for an 80%. Mom emailed back saying that she feels I am targeting her daughter and wants a meeting with the principal. She says that I should have handled this on Friday (which is true, but this class is difficult to manage behaviorally and I wasn't able to. I had two kids making noises, one banging his head against the wall, etc.) The one mistake that I did make (that I was going to 'undo') was assigning this girl a session. I asked all of the kids to take their hw packets and put it in their backpacks or binders. Most of the kids complied but she did not even after I asked her personally about 3 times. After it was still out, I did tell her that she had a detention. I wasn't sure if this was the right "move" but again, I asked her to put it away 3 times. I like for all the kids to have hw away so they aren't doing it during the lesson. I was going to speak with the student after and tell her that I was disappointed that she did not follow directions and she does not have a session, but to make sure that she is following directions but I didn't get a chance. This situation is making me VERY nervous...thoughts?? I emailed my VP about it as well.