Also, the results from the highly competitive India and China might be skewing the results.
Finally, survey is the worst method for this research. Because parent would lie instead of admitting negligence about their kid(s) education.
If you travelled a little bit like I have, you'll discover a few things.
E.g. The poor are usually uneducated. Meaning they can't help with homework.
Even in poor black American communities, house work is often more important than school work.
More important, the poor tend to work longer and harder on mental jobs.
They most impoverished behave like reptiles (no insult intended) give birth to many children and abandon them to varying degrees. (Fulani people actually, literally abandon their kids and may never see em again)
Read about how American Indian handled children.
> Even in poor black American communities, house work is often more important than school work.
You pretty much nailed what I wanted to described earlier. My mother works from home and although she has a bachelor's degree, since the education system (esp. in her times) was poor, she is not even at the level of a high school grad in terms of knowledge regarding math, humanities and science. This is not to mention that she (nor my more educated, late father, who was a doctor) wouldn't be able to help her/his children with their homework due to lack of knowledge/education or time.
One thing I remember though is that after finishing homework, my mom would expect us to help out with house chores like sweeping the floor, collecting clothes from clotheslines, buying small grocery items, etc.