Today's State is often at odds with families, for a lot of reasons, some valid, most not, to which the most important reason why the State wants to be the de facto kingpin of your family is that by so doing, the State puts themselves into a far better position in order to indoctrinate children, for after all, it is written, "Train up a child in the way he should go: and when he is old, he will not depart from it" (Proverbs 22:6). While it is true that both the State and parents want obedience from their children, only one of these parties truly has their children's best interests in mind.
Although your children do live with you, their waking hours, especially during the school year, are not spent exclusively at home, but rather are spent Monday to Friday predominantly at school, to which, you, the parent, are the outsider, as to what actually transpires within the school grounds. This, in itself, isn't necessarily bad; it may well be desirable, since parents have work and other obligations to attend to during school hours, as well as the fact that there is a necessity for some sort of educational responsibility to be shouldered by some entity, in order to properly educate children.
The problem with most public education today, is that the educational system itself, answers for the most part, to their master, and that master is not the taxpaying parents of the children in aggregate, but the State, to which these schools ultimately get their funding, their infrastructure, and their rules. The upshot of all this, is that in many cases, the State and the family are not really on the same page, with the children being caught within the crossfire. The State has relentlessly, over time, aggrandized onto itself, more and more responsibilities that typically were once the exclusive domain of the family, which to a significant extent, have very little to do with the actual true education of children. This means that the State wants to provide meals for children, immunization for children, study halls for children, State-sanctioned educational agenda for children, teacher's aides or tutors for children, after school care for children, outside activities for children, intrusive supervision of the family life of these children, and through all this an abiding interest and obligation to track and collate everything about these students and their family.
While on the surface, these things provided for students by the State seems beneficial, maybe even appropriate, it isn't a fair game, or right, to wrest parental authority and structure from the parents. For instance, the thing that the State has ready access to is a monetary credit system which provides the State with essentially unlimited resources and money, whereas most parents' means are somewhat limited or very limited. This access to money is very important for the State, so as to make it clear to the children as well as the parents that without the State's help, that the parents and children would suffer. Unfortunately, this means that the more that the State provides in services and aid to your children, through the borrowing of governmental funds and misappropriation of the taxpayer's monies, the greater their influence on your children, who perceive the State as the great benefactor.
The State has a master plan to inexorably replace family units with the State so that the State can indoctrinate what use to be your children into the proper mindset to serve the State. In order to accomplish this, the State first ingratiates itself with your children, and then it incentivizes poor people to give up their parental rights for the good of their children, so that the State can clothe, feed, and house these children under mandated conditions authorized and enforced by the State. Once, the State has effectively assumed those rights, parents will be parents in name only, and each family unit will be effectively subsumed by the State, having merged into this brave new world.