It is likely that in a school inspected as Inadequate, staff will move on because it is probably the quality of teaching that is inadequate. It is all vey well so say everyone should go back to pre Ofsted days, Nina, but in those days the children getting 5 decent GCSEs in my local secondary school was 19%. Many of the teachers were not inspirational or even good. Many were poor. It was just not good enough and let so many children down who could have done so much better. I honestly do not think many people want that. It is obviously not acceptable that someone is bullied out of a job. I have no doubt teaching is hard, but there are plenty of examples where teachers flourish and enjoy their work. It is not miserable everywhere.
As in so many jobs, targets are set. Teachers are not unique in this. Some people respond well to target setting and others do not. Some people end up in the wrong job. Lots of us have realised that and moved on, from all sorts of jobs. Few Heads can recruit their own staff to all vacancies. There are just not enough people willing to follow a Head around to do this. However, it can happen in some schools where the SLT is replaced by people trusted by the new Head to agree with them (and get the job done)!
I actually think all the best teachers are in the best schools, and definitely the best managed and led schools. The other schools scrape around to recruit the best they can from what is left. I do not mean to offend teachers, but in any profession, some practicioners are better than others. Therefore in my area it is the outstanding Grammar schools that have, in the main, the best teachers for all subjects. A few higher achieving secondary moderns can recruit well qualified staff, but all the other schools are really struggling to recruit good teachers in all subject areas, especially maths and sciences. They are in and out of RI and Inadequate, and have been for 20 years. I live in a leafy Shire County.
I have no doubt that the Grammar schools set just as exacting targets as everyone else. The difference is they have top quality leadership and children. I also know brilliant teachers who like to work in schools with challenging children. They find job satisfaction in that.
I agree teachers do need to be accountable, but having so many children not achieving their potential in the past, it is difficult to see past good teaching, good progress and achievable targets so children are not consigned to the scrap heap. Unfortunately for so many children, the constant use of temporary supply teachers does not help them achieve to their full potential and parents do not like 6 supply teachers a year! I am glad your son is happier doing this Nina. It is not the solution for the children!