Neely... give it up. By now you surely have recognized that Juniper is about as rational as one of those rabid grizzly bears and she's only in this dispute in a vain attempt to prove her credentials among the Alpha Males (gender confusion being rampant in rural Canada).
While Neely is probably as liberal as I in our beliefs with regard to allowing others to live their lives as they wish (as long as their behavior doesn't impinge on the rights of others) he does have certain responsibilities as a teacher to report behavior such as self-mutilation and threats of suicide. But then again... I suppose as suicide doesn't impinge of the rights of anyone else we shouldn't be the least concerned about that either. Live and let die.
There are cultural traditions involving what others might term "self mutilation" or "body alteration". These certainly include tattoos, scarification, piercings, etc... These are different from slicing one's wrist with a razor and any person in a professional position (teachers, councilors, nurses, doctors, therapists, etc... as well as parents) could (and likely would) be held legally responsible for not reporting such behavior which is commonly associated with extreme depression, mental illness, and suicidal tendencies.
The comparison of pathological behaviors with having a pint of two of beer is beyond all rational thinking. It belongs in the world of idealized fantasy and not the real world in which most of us live. Certainly, extreme alcoholism or drug abuse are just as self-destructive... and as a result society makes attempts to counter these behaviors... largely because it is recognized that such self destructive behavior hurts others... and even society as a whole ($$$). But I suppose that is irrelevant when you live in a third-world cattle town. Then I guess live and let die is the mottoe embraced by all... not Donne's
No man is an Island, entire of itself; every man is a piece of the Continent, a part of the main; if a clod be washed away by the sea, Europe is the less, as well as if a promontory were, as well as if a manor of thy friends or of thine own were; any man's death diminishes me, because I am involved in Mankind; And therefore never send to know for whom the bell tolls; It tolls for thee.