But children wouldn't necessarily be learning in a classroom the entire day. Even today there's a bunch of extracurriculars (band practice, sports, etc.) that o

But children wouldn't necessarily be learning in a classroom the entire day. Even today there's a bunch of extracurriculars (band practice, sports, etc.) that occur between dismissal up until dinnertime. If these "after schools" or "buxibans" (as I grew up around) became integrated into the school system itself that seems the most ideal. It would certainly kill off a secondary market of cram classes, for better or for worse. Homework might not even be a thing at that point since they could just do it at school, as you mentioned.