Not a teacher but Legal Guardian to my two nephews, twins in Y8 - Both working to different timetables annoyingly but their school provides 4 out of 5 live lessons a day probably 20mins a lesson then 30mins working themselves.
Their internet is blocked at school times except the sites they need, iPhones have Screen Time parental controls imposed too.
Might seem a little OTT but they need to try their best and I cannot monitor them all the time, all webcams have to be turned off for data usage reasons so they could just join the class and continue playing games - and they did for the first week.
I WFH Self Employed for 8yrs and started up another company back in 2019/2020 as my SE business has to end this April.
I probably spend 1-2hours at the end of the day checking their work and helping on some questions they might not understand and making sure they submit it. They did try the we've done it all but in reality they just copied some of the work and missed out majority of questions.
Overall they seem to understand, schools might be closed to them but they are still open and working full timetables - Working from home gives a lot of freedom but end of the day you've still got to get your work done to an acceptable standard, the sooner the DC have this mindset the better I think. Especially as this looks like its going to go on for a few months now.
It just took some planning and takes an hour or so of my time every day. Blocking their internet for everything except school was the real big winner IMO.
Seems to be around 15-20 out of 30 pupils per class joining live lessons - Keyworker students at school join the lessons and do the exact same learning with a staff member supervising 15 students in a room.