Smaller class size implies more trained teachers, more early education, more Montessori like school environments, all of which require a society which values mind development over energy spent on a military industrial complex ,to breed serfs for growing wealth capture and inequality. As fossil fuels EROI falls all social investment becomes less affordable. As pollution rises, and cities become slums, and food nutrition is a problem, fetal and child neurological development is itself compromised, before formal education can begin.