I started to go to school in the damned Soviet times. In our first "B" there were 42 people, and the teacher somehow had the patience and authority to keep us all in touch. Then it was adopted that in the classroom cleaning (washing boards and floors) the children themselves - according to the schedule of duty, in pairs. I do not remember that it was somehow stressful, on the contrary, it was perceived rather as a pleasant variety, a glimpse: for example, before washing the board, we actively painted it. But then, of course, everything was cleaned up :-). But there was an understanding: if you "gaped" somewhere, then you will have to wash. The same drawings on the batches after increased rubbing with powder (during a couple of duty) no longer wanted to resume :).
Now the kids get stressed! You cannot force them to clean up the class – it is the exploitation of child labour. The cleaning of the class is on the shoulders of parents. The school is responsible for cleaning the hallways. And parents are free to decide on their own - either hire a cleaner or clean it themselves.
I chose the second option - after daily 10-12 hours at the computer, I wanted variety and cooling. Under the music and audiobook the cleaning went like by oil. And only one thought saddened: and how to explain to the children that it is necessary to respect the work of cleaners, if the children themselves do not feel what it is to clean up the garbage and dirt?