I think you need to approach this very carefully. At our public school, you would be expelled for the first punch. You would be suspended for a punch thrown. If it was your local school, you might keep your program assignment. If it is not your local school and you are a magnet guest, you would likely be expelled to your home school. In the first case the circumstances would not matter. In the second case, they might.
If you had reported the harassment (not just had evidence of harassment) and you were punched in response, it may be relevant.
Our school takes harassment very seriously and a kid was expelled from our special program the third week of school for harassing SweetBoy. We actually had nothing to do with it. The harassment was made known to admin before us, the discipline choice was made without our input.