The game differentiates between successful escapes (Good Endings) and failure scenarios (Bad Endings/Game Overs). Good Endings (Escapes)
If Sister Madeline catches you on your final day, you face grim punishments: Evil.Nun.The.Broken.Mask.Good.or.Bad.Kid.Early....
Leaving through the front entrance, which can be done silently or by triggering the alarm. Evil.Nun.The.Broken.Mask.Good.or.Bad.Kid.Early....
You are placed inside a coffin to "sleep forever". Evil.Nun.The.Broken.Mask.Good.or.Bad.Kid.Early....
Hiding inside or on top of the laundry van to be driven out of the school.