One of my best friends is a highly intelligent and capable woman who has raised four lovely daughters, run a successful business, and is a respected teacher whose students have produced consistently good results.
This will be her last year of teaching. She just does not have the energy to struggle every day with children who are rude, have no interest in learning, and for whom everything is boring. Of course it is they who are boring, because they have no interests, no skills, no informed opinions to share.
My friend is also dismayed by the level of verbal and physical abuse directed at staff and other students, and by the inability or unwillingness of Education department staff and politicians to recognise the problem, and to put reasonable structures in place to encourage learning, or even to ensure schools are safe places to work and learn.
The always interesting Boris Johnson makes a case for greater support for teachers, and more meaningful (though not necessarily corporal) discipline policies and processes.