I blogged on this before, on how the principal was accused of somehow being at fault for the suicide of a student when it was revealed that the principal had been hypnotizing him. Now the death toll is set at three students who died after they were hypnotized.
George Kenney, Hypnotizing Principal, Allegedly Lied About Putting Students In Trance
Note: Hypnosis was used in the mind control experiments of Project MKULTRA. I can't say there is link but I think that this story should be thoroughly investigated.
See Also: Project MKULTRA