Miraculous: Simply the Best/Teacher Creature

Transcript
It begins in Miss Bustier's class as everyone in her class is there sitting down. Marinette is making an efforrt to not fall asleep.
 * Caline: Ms. Dupain-Cheng...
 * Marinette: (frightened) I'm awake!

It is revealed that everyone is goofing off except for Adrien.