There is an institution that takes care of children. Children can go to this institution to have dinner with teachers after school at noon and afternoon. Teachers can also help with homework, and then go to this institution to pick up their children after work. If your parents don't want to take care of their children, you might as well send them to such an institution, and the teacher can help them with their lessons. Moreover, the tuition fees of such institutions are generally not very expensive, and it is only one or two thousand a month, which is still affordable for ordinary families.
If your children don't want to go to such institutions, or if your family conditions are really good, then you can hire a private tutor or some nannies who specialize in taking care of children. Generally, nannies with children are more experienced, can teach children better, and can also help children do some homework at ordinary times. However, it is expensive, but if your family can afford it, you can invite people like this at home.