M.P.
Starting a new school can be very hard for some children. I am a first grade teacher and here are a few things you could try :) First off talk to the teacher, the two of you need to be a team share things that work at home so she can be consistent at school, the two of you can come up with a plan of how things can be handled. Second would be to talk to the social worker or counselor in the school, at my school they do friendship groups where certain students are pulled out once a week to work on social skills etc. I have seen this be very helpful! Third give it some time, by no means make the behaviors okay but do realize starting a new school can be hard but let them know they aren't being safe and they may not act like that at home or school. A make sure you have great communication with the principal and resource teachers, you all need to be on the same page. Good Luck, it will get better let me know if I can help :)