I don't think we had homework before middle school. There may have been a project or a once in a while thing that needed to be done but definitely not homework on a steady basis.
Yeah I don't remember doing homework in elementary school, maybe reading or doing some math flashcards but that's about it. Of course my mother was an elementary school teacher so maybe I never realized it. I do remember my 1st grade teacher, who I hated, wanted to hold me back a grade, and my mother said no way and they had to advance me. And I never had a problem after that.