Forcing someone to sit and be mindful is incredibly offensive to the idea of mindfulness. Goes to show that whatever good thing mandatory schooling touches, it perverts or corrupts. They should just stick to sciences.
Yet often times as a father I see that guidance is best achieved by reasoning, not compulsion. Compulsion breeds long term resistance and aversion, which can damage relationships with certain topics and activities way more than whatever short term benefit was achieved by it.
Kids jumping off bridges is probably worse than them eating ice cream cones or whatever.