My fiancée and I, this weekend, attended what for reasons of space will be described as "professional development for engaged couples."
There were threats all throughout the literature: if you left early, brought a cell phone, left the grounds at all, or committed any number of minor-league infractions, you would not receive a certificate of completion.
Nope. Don't — no, y'know — just stop begging. Stop it. You were seven-and-a-half minutes late to our noon session. No certificate.
Thing was, me and my girl didn't much care for a certificate. And after it became evident our presenters were going to read from a script all day, we left.
The relevance of this anecdote to classroom management is left as an exercise to the reader.