Many (all?) Japanese schools don't have janitors. Instead students clean on rotation. Never been much into Japanese stuff but I absolutely admire this about their culture, and imagine it's part of the reason that Japan is such a clean and at least superficially respectful society.

Living in other Asian nations where there are often defacto invisible caste systems can be nauseating at times - you have parents that won't allow their children to participate in clean up efforts because their child is 'above handling trash.' That's gonna be one well adjusted adult...