school urban legends

having moved countries a lot i've been to quite a few different schools and have heard a lot of rumours about each school so was wondering if anyone had heard these before
- there's a ghost in the school (this was at a boarding school that was over two hundred years old, hence the whole old building must have a ghost idea. our ghost was affectionately known as 'the grey lady'... not the most orignial ghost name!)
- there's an insane psychopathic killer on the loose (one of my schools was built next to a mental hospital and i know one or two patients escaped as to their being psychopathic killers that i do not know!)
cya,
jo