You emerge into the public hallway

You run all out, heedlessly trying to make up for lost time in chasing that little twerp. Suddenly, you bang your head into a heavy object. It only hurts for a moment, but the vibration is disorienting. You think this must have been the door. Suddenly, you feel the slap of tile against your feet. This was the wrong end! You are in the school hallway! However, the daze of the impact made you stagger around, feeling your feet on the cold tile for several more seconds. You turned around in the direction you thought was directly behind you to go back through the door, but you bump into a cinder block wall. You have no idea where to go. You blindly wander around groping at the air, but finding nothing.

Suddenly, you hear a creaking sound. It must be the door closing! You turn around and run back as fast as possible to make it through. However, you were too late. The door was more than halfway closed at the time you got there. You simply collided with it again, making it slam shut immediately. You desperately try to open it again. You grab the handles and pull as hard as you can, but it does not budge.

Now you are trapped in the hallway everyone uses, wandering around naked and blind.