My kids experience is starting around Junior high homework is mostly only graded by completion. Teachers simply don't have the time. They will go around and check they kids did the work and then maybe go over it in class. This is not a big deal as long as homework is only a small portion of the grade and the kids get feedback on how they did and a chance to know what they did wrong. Homework should be for practice.
Never heard of a school that expected the parents to go over homework with their kid. Or to start this practice this young. One of the purposes in giving elementary kids homework IMO is so they learn that homework is expected and the executive skills in completing it and turning it in.
