When I was a senior high school student in Japan, where I was born and lived my entire life, I was in the Orchestra Section. The school itself looks recently renovated (Note: the school begun at closely 1956).
One day, after a whole day of studies, I went to the Orchestra Section's training room, and I needed to go to toilet. The toilet was on the side of a corridor, and the boy's was on the inner side of the side corridor (yes, I'm Male) Few seconds later, I went to the toilet and did my "necessaries" there, in "standing type one". And I left the door of the entrance of the boy's toilet opened.
When I was doing my "necessaries", I noticed a human-form shadow going even deeper of the side corridor. First time, I thought "Hmm...Looks like somebody passed the entrance". But later on, I realized about two things that explains that's impossible what the shadow did, and I began to have a cold-sweat on the beginning of warm Autumn. I went out of toilet and double-checked it:
There was no more space to go deeper of the side corridor, because it has a wall-sized window and one more thing: The place was on the 5th floor in Japan (I guess in U.S.A was 4th floor. Tell me if I'm right or not).
I already heard about rumors that the school was a sales flamed hospital before, someone say that saw a really creepy ghost behind of a professor (the student who saw the creepy ghost was on the Orchestra Section too, so I was friend), and somebody committed suicide before.
I'm in Brazil, studying as a College student, but even now, I don't know if the rumors are true, but many things with ghost, students and even to me happened. Let me know you guy's think, I'm really curious about this...
Thanks for the attention.