Mrs. R sounds like an idiot. Filing a police rept because they were singing songs about the bus driver's funeral? Puh-leeze!!!!
So sorry.
She could easily have given them chores to do --shredding papers, wiping down blackboards ... don't they teach teachers and principals this in teaching college? No, I guess she just jumped through bureaucratic hoops and left her common sense behind.
Glad your transportation held out at the end.
What a day!