I think there is some room to innovate before we get to that point. For instance, they could educate students on the economic and ecological costs of food waste

I think there is some room to innovate before we get to that point. For instance, they could educate students on the economic and ecological costs of food waste, and equip them with tools to reduce it, like associating certain levels of hunger with visible portion sizes, or putting in electronic scales so students are shown how much of each food they eat.