Moden school has lots of problems. But in that socialized daycare kids get some skills while they have fight for they place, and learn some basic skills and to way function in community which is mostly harsh and realistic. As I offten explain to them its not about what they learn (to replicate), but its about the journey they go throuhg in preparation for their future lifes. Lots of parents don't have and don't spend enough time with their kids, and that impacts school system a lot. Its like from 8:00-14:00 its not parents problem, and after they come home they are too tired. Without right care kids die out, its like with plants . You must nurture them while they are young, else you will have harder life later, or will be lost in shrubs.
TLDR Problem is not within schools, its in society, we must tend for every kid, and his future, that is something parents sometimes don't see. Time and effort you spend with them, pays out with dividends in future. As techer its is hard to put passion in student, becuse that is parents and society role.