I believe that the principal's action is a reasonable measure to preserve order in the school.
Explanation:
I believe that the principal's action is a reasonable measure to preserve order in the school, because if he allows anyone to talk as they like then no one would listen to the teacher and the students would think it's okay to do whatever they please. And also the bully's among the students will feel like bulling other students is acceptable and they are miss-using the first amendment is is free speech.
They are authorized to deal with petty civil and criminal cases, perform marriages and operate as notories or judges in small claims court. They can also work as coroner to certify cause of death.