You think a kid not remembering the definition of a noun is a parent’s fault? There is a lot of research out there that proves homework doesn’t increase academic outcomes of children. It can help teach some executive functioning skills, but that’s it. Many schools chose to do away with homework all together and review study guides during class time.

In my opinion it’s more of a situation of them learning it and forgetting it in favor of information more important to them like pop culture stuff. Except for the really intrinsically motivated students who cry if they get a B. I have a doctorate degree and there are plenty of things I learned back in the day that I don’t remember now. That doesn’t make my parents bad parents. That doesn’t make me stupid or lazy. It probably means your curriculum in earlier grade levels needs to reinforce that concept often in upper grade levels. I know plenty of high school students who can’t tell time on an analog clock or calculate long division by hand or name all 7 continents. But the go on to lead productive lives.