I can understand where you’re coming from to a degree. I get it’s not ideal as a parent and the situation is poor, I’m sure there is more than meets the eye regards to the teachers at your kids school.
my wife is a teacher, has worked even harder since the pandemic started doing online lessons, preparing worksheets, she even started her own YouTube channel and put lessons on there! Schools are getting guidance from government very late. (For anything to be implemented on a Monday, they’re getting the notice from gov on Friday night) Teachers unfortunately are getting the brunt of it all.
have you reached out to your kids school regarding work being set?