This is the Fifty-Fifth Painting That I have Done:
Your high school may have given juniors and seniors a greater or lesser amount of responsibility in their last year. When you are the oldest student in a school, everyone, including the teachers, shows you a certain amount of respect due to the fact that you are the senior.
Imagine for a moment that you had the ability to spray paint people without the worry of causing them any harm since on this particular day, your kids were being supervised by the teachers who were in charge of them. It is evidence of the close relationship that exists between teachers and pupils that they permit students to spray each other without first obtaining permission from the teachers.