This happened not so long ago, in a School in Monterrey, Mexico. The building has 3 floors, all floors with a ladies restroom, and a boy's restroom, It has stairs at each side of the floor. On the first floor you could find there 5 little rooms were the teachers worked. The building's gates close at night, and the lights were all turned off. I was a teacher at those times. I was working on my students grades at the third floor in my classroom.
My work was almost done, all I had to do was go down to one of the little rooms and type it. I walked outside my classroom and locked the door. I was very tired. I was walking toward the stairs looking at the other side were the restrooms stood. I slowly walked down the stairs, when I saw a "light" coming out of the girls restroom. I didn't bother to look again, cause I thought it was only an illusion I had because I was feeling sleepy.
I finally got inside a room and had a strange feeling, I looked up and saw the "light" again, I was paralyzed when I saw it coming down the stairs, It had the face of a lady but the body was all light! When I blinked it was gone, I couldn't get that out of my mind, so I shouted to the guard to open the gate. When the guard came I told him all that had happened, he said that I had to calm down and keep on working. He gave me an aspirin and told me to continue working.
I went inside the room again and kept on working. I looked up again, and saw her! Again I blinked and it disappeared, I continued working hoping that those pills would take effect soon. I looked again she was on the first floor walking towards my room, but it vanished in thin air. I continued working, and heard sounds in the other five rooms, I heard: TAP TAP TAP TAP, and then a woman's sound like if she was crying, then of children laughing.
Then I saw brightness through the hall just one room behind mine. She was standing in front of my window. It only lasted 10 seconds before I fell to the floor and passed! out, I remember that she had a female mummie face and light around. Now the trauma has left me from my waste down paralyzed. And now the guard believes me, but no one else. I hope you believe me.