An interesting article:
A school in the UK staged a UFO crash and tests were administered to ascertain how the students reacted to gather information....link here:
The article mentioned a 'drill' that took place a year ago; the school staged a UFO crash landing. They even brought the police in the charade to add authenticity to the story. Half the school day; the children were led to believe that aliens were near by. School justified the stunt claiming it stimulates the children to be more creative writers.