I know two teachers personally. This is not the case in my discussions with them and others. Maybe you can enlighten me on what does take 10 hours of time daily?
From speaking them they are absolutely not working from 8:0am - 6:00pm on every day.
Lesson plans are inherited from prior teachers and … yes continuously updated during the year but not at a major time cost every day. Grading takes a few hours for one day either on the weekend or in the evening.
And yes they complain about it constantly… it seems more a cultural thing. They also complain about other teachers complaining 🤣
I’m not touching the issue of summers off because yes that is a different thing, and yes it’s quite hard for them to get real employment.
Again salaries should be higher and support teachers not assuming they can work in the summer… but why conflate this with the daily hours ( which are frankly good as stated by those who I know in the profession as a reason they like and took the job)