The coming in early and working late, as well as the occasional weekend is something that a lot of other professional jobs do as well, without a ten week summer break.
I'm sure it depends heavily on the district, but the "teachers are the hardest workers!" tagline always seemed like an easy story to tell to (justifiably) ask for wage increases.
"gasp They have to grade homework at home!". Well, yeah, I have to take office work home as well as the United States has no labor laws preventing that.
Lesson plans change frequently and aside from some macro-level planning, re-use is quite difficult from year-to-year. Some children also have individualized lesson plans that require more attention.
> The coming in early and working late, as well as the occasional weekend is something that a lot of other professional jobs do as well, without a ten week summer break.
Again, they are not off the entire ten weeks. They have work obligations to fulfill during the summer. Furthermore, during the school year, teachers work just about every weekend and not 'the occasional weekend'.
Within the planning process, you often have to allow for significant changes in the syllabus content and mode of assessment.
There is usually staff training provided by school management, and career progression in teaching is linked to taking on extra responsibility.
Now, a very interesting question is why do we have the long summer holidays still? Lets face it, a very small proportion of the population work on farms these days. Changing that would have to be a big bang change of course. The whole system would need to move over to a new school year in one go, which is probably why no government has done it yet.
I'm also, looking back on a 30 year career, beginning to wonder if a more 'industrial' approach to curriculum design might be useful. Why not simply devise a national curriculum and produce standardised lesson plans and schemes to go with it? In the UK we have the national curriculum bit but teachers are still scrabbling around for resources and activities.
That's what we do in France. In most cases, it works rather well.
The main problem is that it means that every change has to be synchronized nation-wide, which is time and resource consuming. Also, since it's national, it can quickly become a national cause, both for the government (who sometimes decide to change the curriculum for purely political reasons) and for some parts the opposition (« No, that's not how you do Sex Ed! », or such).
Also, we're not too good at handling edge cases (e.g. students with special needs, gifted students, students in places where most parents don't speak French).
Are your teachers noticeably less busy by the way?