This happened to me when i was 10 years old. When i was studing in dazhong primary school, my friends told me that in third story in the art room, a girl had died. At first i didn't believe.
But when i went to the art room to take some poster colours, the door closed suddenly. I was really scared. So i take the colours and went out of the room.
When i tried to open the door, it was locked. After that i heard laughing and footsteps sound. After a while my friend came to look for me and i told him the story. Don't ever go to the art room ALONE!