He had used hypnosis to help the two students with text anxiety, Zimmerman said, and had an individual session with Brittany, with a parent present. "It is a coincidence that of the many students he was working with, two had other things going on in their lives."
Florida High School Principal Lied About Hypnotizing Students Who Later Died - ABC News
Interesting, should he be tried for second degree murder? Some say that the students being hypnotized had nothing to do with their deaths. If not, then what was the harm? They say that when you are hypnotized you wouldn't do anything that you wouldn't normally do.