Conflict Resolution

We had a very uncomfortable moment in class yesterday. While discussing ideas for a skit, one student became offended and called out another by name - in a brittle, critical manner. This particular student has decided to go to a different school next year and has been heard stating that it's time to burn all the bridges. This is SO unfortunate; it's also pretty immature, something this student doesn't think fits him/her. I vacillate between sadness that it's happening and anticipation of his/her departure. People need to know how to leave well. Yes I have taught the R.A.F.T. method but this student doesn't want to hear it. So today we will deal with conflict resolution in class because the student who was called out by the departing one, stepped up, said sorry, and asked forgiveness. Yeah... a really mature great student!