I was in the Summer 2013 batch.
Since this is the top-voted comment, let me be emphatic. The assumptions the parent comment makes about the HS experience bear no resemblance to reality. A good example is the consistent theme in this thread that such a rule can't exist without a shaming ritual, or without loss of being considered an adult.
The context we're missing here is that participants at HS are self-selecting. One person in our batch quit his job as director of investment technology at a massive international bank to attend HS; another was a high school student. In all cases, participation represents serious costs of opportunity, time, and capital, and almost always, the reason they do it is because:
Fundamentally, participants already believe in the assumptions of the environment.
There is room for this theoretical debate about whether x policy extends to good rules for all of society. But realistically, the HS rules are effective because people at HS agree with them.
To have this discussion without this specific context is to miss the point entirely.
That is why the rule can be lightweight, and can still be incredibly effective. And if you don't think that's true, then I suggest you poll a nontrivial subset of HS, because almost everyone agrees.