his body his mind. If he has no genetic predisposition to schizophrenia chances are he'll turn out just fine, just be a little mature for his age.
But you shouldn´t forget, that the brain of a human isn´t fully developed at this age. No one before the age of 16 should ever take any drugs!
There are other aspects besides the individual's health, as important as that is. A community like this is usually frowned upon when a youngster's parents find out that this is where he's been learning about the illegal acts he's been doing. Especially if he's hurt himself. PF, the most famous mushroom spore vendor of all time, got busted because of a few parents opening their kids' mail and finding this, and demanding the authorities do something. Just a thought.