There is a lot of scrutiny that's come up in recent years. It's very target and progress driven, unfortunately the "product" the students are complicated human beings that don't necessarily behave according to statistical averages.
The difficulty is that the boundary on when enough is enough doesn't really exist. Maintaining a work life balance, especially if you have a family is tough and a lot of guilt is involved.
Jobs are available at the moment because so many people are walking away. Academisation is eroding terms and conditions. Teachers have become pawns to political whims that are not based on effective pedagogy. Change is happening at a relentless pace before outcomes are evident and there is no resourcing of time or money to facilitate this.
I spend a fortune on stationary so my students can have "beautiful books" because they don't provide it, the school can't afford it, and I'll get it in the neck if it's not done. Teachers are everyone's scapegoat, the politicians, the students, the parents.
The financial rewards for working a minimum of 50 hours a week for the level of professionalism involved aren't fantastic.
There are many satisfactions from the teacher-student relationship, and that should be the core of the job, but it increasingly feels like a side show.
Contracts are increasingly issued for a year initially, particularly for NQTs. You can pass your NQT year but not be kept on. I qualified over a decade ago when jobs were scarce locally and have survived my entire career on temporary contracts and supply.
To survive, you have to love the students and your subject, be resilient, organised, great at politics and have a high energy level and few external commitments. Sadly a love of statistics and spreadsheets is becoming essential.