Our school has it so if you ask for homework they get some, if you ask for them not to, they don't. (We are a k-12 school and the high schoolers get homework I think). My son is in 1st grade and I asked for him to have homework. He gets given it on a Monday. But, they run a "homework club" in the library after school on Monday for an hour so I send him to that. I also send my 4yo with worksheets from his OT (he is ASD) to the homework club. I love this set up.
ETA: The club goes for an hour but it isn't just homework the whole time. They do some reading and games like memory etc.
I ask for homework for my 1st grader in English as he is a touch behind and this has really helped him get up to speed and I send my 4yo more so he can get used to sitting at a desk and working without being micromanaged (strongly encouraged by his OT). So it's not just an hour full on with work.