This one day we were having a review session for an upcoming AP History Exam at our school. About half way through the session, we got off topic and started talking about ghosts and other freaky situations we had been in, even our scariest dreams. Only our classroom had lights on so the hallway was really dark, but we kept seeing flashes of light out there. We got so freaked out that by the end of the session, we were huddled in a corner talking about how our school is known to be haunted. I swear this is true...about 10 years ago, a janitor was sweeping the stage after a school dance, and had a heart attack...
I guess he died right there in our cafeteria. Some of our teachers claim to have seen him, and I told the story of how I thought I had seen him on the third floor one time (the hallway he spent most of his time in). Well, just about then, we started seeing this dark figure walk past the doorway, so we decided to call the review session off. A few of my friends wanted to go up to the third floor hallway, where our lockers are to put their review stuff away, so I decided to go with them. After my friend closed her locker, (literally a milisecond right after) we heard this loud thud...so we ran all the way downstairs and out of the building.
We turned around and our teacher came out the door right behind us and told us she was worried and came looking for us, but the thing is, she wouldn't have had time to walk the entire hallway while we were in the stairs, and she wasn't in the hallway when we left. Spooky.