I am grateful for the supportive comments here from people who do understand.
People outside of teaching simply do not understand the current pressures within the profession. Typically all the teachers I know are working a 65 hour week and the occasional 80 hours at assessment time. We work every evening in term time and at least part of every weekend. We also spend a significant amount of 'holiday' time marking , assessing and preparing lessons and our classroom environments. When we mention workload, management start to question our capability and say we need to 'work smarter' , but the work is there and needs to be done. We don't whinge about the hours because we accept that the job is vocational, but over time they take their toll.
Supply teaching is a lot easier because you do not have to plan lessons, just deliver them, and you do not carry any overall responsibilities, you can go home after marking and not have to lead a subject (or three in my case), attend after-school meetings, run lunchtime / afterschool clubs, or work at weekends.
Typically, the teaching profession attracts deeply conscientious and hard-working people. We are consistently criticised in the media, we lack parental back-up and support for learning and discipline and more and more of us are being used up, burnt out and replaced by 'cheaper' less experienced ones.
stillhere, I am very sorry to hear of your OH journey - it is one that is being repeated up and down the land at the moment as /i am sure you know. Our school has had 4 headteachers in one academic year and the current one was not told the truth about how our school is doing when she took on the job. The governing body had to interview twice. We very evidently needed an experienced head, but got a former assistant head instead and someone without the background understanding of church / Christian ethos knowledge needed for a C of E school. Sadly, I don't think she will see the year out. Everything is budget and target driven and the targets are completely unrealistic and unreasonable.
There is a crisis brewing.