It seems to be broader-- speaking to school district policies that cross the entire gamut from elementary to high school-- but the focus is on high school. Certainly I'd say the case for removing homework is weakest in high school. (I only teach one HS class, and my homework load there is pretty light, too).
> I assume the "opportunities to improve essays and classwork" is done outside of normal class hours. Perhaps, the work is done at home. And that they addressed your point A by allowing students to resubmit work, and your point B by removing deadlines. I can definitely see how it could be an improvement.
I think these are very difficult things to drive as a policy from the top down. Removing deadlines just encourages students to dig themselves into a different kind of hole: an insurmountable backlog of work that makes doing any of it feel less worthwhile.