Of course when I was a kid, 1/3 (or more) of the class would copy homework off of other kids, so plus ça change.

Assume that you have n number of hours per day in the classroom scheduled for instruction

Assume also that you have a curriculum, which requires H number of hours to successfully complete (at the mean time to complete)

Depending on the ratio of n::H will determine the number of students who need to have homework and how much

You then adjust either n or H based on desired measurable outcomes and then iterate

I had never heard this but this is absurd. You're already forcing kids to go to school as early as 6-7am, a full 8 hour day, and then you expect them to spend an ADDITIONAL 1+ hours on take-home tasks? Plus studying? if they have extra-curriculars and aren't a genius, forget it. Not to mention kids with special learning needs and the lack of resources there. No wonder kids are stressed.

1. Practice (again) what you've recently covered in class. More reps, greater ease and speed and fewer errors. I suppose the article's point about some students needing more support and feedback means this isn't really a good position, unless we (re-)introduce something like tracking, or we abandon the coarse divisions of grade levels.

2. Cram in more learning - I'm thinking back to college to the profs who started each day asking for questions about the previous nights' readings, and then launched directly into new material assuming you had full understanding of the prior stuff.

This could be addressed by making homework assignments that can be done without a computer. In academic subjects (math, science, English, history) it should be possible to assign homework that doesn't require anything other than the textbook or class handouts.

As far as whether homework is useful or not I have no opinion when it comes to elementary school, middle school, or high school because I have almost no recollection of doing any homework. I'm sure I was assigned plenty of it, but all I remember was in advanced biology in high school we had a semester long homework assignment to collect and identify either 50 different local insect species and 10 different local plant species or 10 insects and 50 plants.

In college though I'm pretty sure homework is useful. At my college (Caltech) you could pass most classes without doing homework if you did well enough on the final and midterm. First year was all pass/fail so if you went that route it wouldn't even effect your GPA.

But I can't recall anyone who skipped homework and actually learned the material well. To really get it you needed to get the theory from class and/or the textbook and you needed to do problems that applied that.

But homework at Caltech was quite a bit different than homework in high school which may have aided in its effectiveness. In high school when I worked on homework there were usually no other kids nearby working on the same homework. At Caltech there would be other people living in the same house I was in who had the same homework. And at Caltech most professors allowed or even encouraged students helping each other on homework, as long as you aren't just giving someone else the answers.

For example when I took the intro to abstract algebra class the guy in the next room was also in it, and so was another guy just around the corner of our hall, and two more farther down that hall. Me and the guy from the next room and one of the others would typically work on it on his room, mostly working alone at first but coordinating so that we start on different problems. That way when we finished our problem we could move on to a problem someone else had already done so if we got stuck we could ask them for help. If none of us could see an approach someone would go ask the two guys around the corner. They would come ask us if they got stuck. All in all it worked out great and I learned a lot from these homework group sessions.

I wonder if a similar experience could work before college at boarding schools? There you would have easy access to others who are working on the same homework.

Over the last five years of my stint as a teacher (I might go back to it) I didn't assign homework unless it was mandated by the principal, and even then I pushed back. I carved out reading time during class, kept shelves of books of various genres in my classrooms, and encouraged my students to dig into whatever they were interested in outside of (and including) whatever we were doing in class. This approach worked best at an alternative high school where the students were generally disaffected with their educational experiences so far and needed teachers to meet them where they were and build from there.

In Finland we do the previous, US is strongly in the latter camp.

A 5th grader (11-12yo) has maybe 10-25 minutes of homework, on some days there just isn't any.

Math homework is just a rehash of what they went through in class, Languages are "read the chapter and answer these questions", other subjects tend to be just "read the chapter".

And a "chapter" is like 1-3 pages of sparse text with pictures and diagrams.

You know how when the police stop someone, haven't arrested them yet... they're taught to "control" the situation. To be able to, at a moment's notice, tackle anyone who is there, force them to do as they are told?

Same thing with teachers, only they're mostly not allowed to twist arms behind backs.