Not an adult school roleplay but:
You've been naughty which you've confessed by e-mail. Now you've been given an appointment. You arrive and you have to report to receptionist. Then you have to go into a waiting room or maybe just stand in the corridor. There are other paople there aswell, male, female, just in normal everyday clothes, all a bit nervous and apprehensive. Maybe there's a list posted on the wall somewhere with everybody's name and offence on it.

And then it starts. The receptionist calls out somone's name. They stand up sheepishly and are ushered to the ofice. Then a few minutes later the next one. Eventually it will be your turn.