My friend and I saw one when we were in third grade.

The boy scouts had a camping thing in the school playground.

So they woke us up at 4am to go wash our faces and stuff.

My buddy and I walked to the bathroom by all the first grade classrooms and washed there.

When we got out, there was a flowing black figure at the very end of the hallway, probably about 50 yards away. It was walking towards the last classroom, and it turned towards us, it's white face looking shocked.

So we screamed and ran like the fucking wind.