Odd point is that some books, at least half my classes, have a code where you can download the entire book, cover and all. If you get a used book, then look inside and it will let you "buy" the downloadable book. Most have been either PDF or e-pub. If I could buy the downloadable textbook directly instead of having the heap of books that I've bought, I would also save on space. Initially, I didn't like the e-reader version of the textbooks, because of lack of easy "Post-Its" keeping pages temporarily book marked, I got used to the electronic version. It takes a while, but now I prefer reading my e-pub and PDF books on my iPad and it does save book weight.
My middle school daughter has and still does carry a very heavy bag, because she goes to a school with a fairly large campus and cannot always get to her next class in time if she had to go to her locker. For a middle schooler, carrying around 25+ pounds of books cannot be good for her and she already does exercises and is not overweight. My elementary school son has a fairly heavy bag and he has to carry a 20+ pound bag.
I got to thinking about how it was when I was in elementary school. I don't remember carrying so many books. In fact, I did not carry that many books when I look at pictures of me. I remembered why that was the condition back then compared to now. For one, our teachers, my mother was one of them, never assigned homework like "p. 45 - 47 odd numbered problems" or "answer questions on p. 77." We always had handouts (does anyone remember "ditto" machines?), where the teacher either made up the problems or took them from the book, but still a handout. So, unless you needed to reference something, you never had to carry your books home and subsequently back to school. Thus, most of the time I had my notebook and maybe one book. Since my mother was a teacher in the same school that I attended I would either do my homework in her room or more often, the teacher that I had would quite often stay until 5 or 6 P.M. and you could do your homework in the classroom. So, I would do my "homework" in school and if I finished and the teacher was there, I turned them in.
So, why so different now? I think the teachers don't stay late because of several reasons: they have to chauffeur their own kids to sports or other activities; the union doesn't allow it; they have another job. Also, the children are not allowed to remain on campus. Thus, they have to carry all their books home so they could do their homework. An e-device would be better and yes, they could break but surely 25+ bags cannot be good for growing children, which could be a worse financial problem. Because my childrens' books are so heavy, they go through two bags per school year. It isn't because they are throwing them around, it is because the straps rip out from the bag making them unrepairable. The bags are so heavy that the only way you can get them up is to yank them up to your shoulder. Then what about the bags with wheels? There are stairs where my children go to school and the wheeled bags get damaged from going up and down the stairs, or they have to carry them on the stairs which then the handles are yanked off the bag. So, yeah, iPads or other tablets are not cheap, but I would gladly like to lighten my childrens' load. Apple's move might prompt more publishers to choose an e-version to let children use. If not affordable, for some students, have your PTA help with the payments. Our PTA (I am on the board) actually paid for an entire $75,000 computer lab in an unused classroom. If we used iPads, we could easily pay for students who could not afford them (our alumni donate quite a bit of money and supplies that the school doesn't have to buy, and since I can afford it, I also donate at least two iPads worth each year).