I have no doubt that this job is hard. My mother was Head of Drama at a large comprehensive in South Wales, and being witness to that in my formative years put me right off teaching for almost a decade of my working life. I think this was slightly stupid on my part, but then again, I saw the job get less rewarding and interesting and far harder for her the older she got and the more bureaucratic the job got.
Then again, what I do now has become thoroughly boring and routine. When I started, it was a unique place to work, which made the job interesting and enjoyable. Now the combination of bad pay, massively increased responsibility, appalling hours, and all the normal difficulties working and living in Central London have squeezed almost everything else out of my life. It's hard to enjoy anything with no time, no energy, and no money.
For all that teaching is challenging, I notice that Jenks has time to read outside his job, write poetry, and conduct a normal family life; likewise, my mother was able to raise me and pursue amatuer drama after school. I'm thinking that this job is exhausting but rewarding and leaves space for a far better quality of life than where I am now, and I'm thinking this despite the wearying "kids pulling knives on teachers" stories I get told every time I mention doing the job.