I was a school principal for over 40 years and have worked in all sorts of circumstances in both WA (briefly) then the Northern Territory. One of the things that has worried me over the years and one that has time and again proven to be true, is that models of operation replacing (superseding) earlier models always seem to be inferior to what is being replaced. Now you may accuse me of viewing things through rose coloured glasses but I do remember the challenges of now historical circumstances. What has changes over the years is that faith and trust along with appreciation placed in teachers and school leaders has largely dissipated.
Where there was appreciation there is now expectation. Where trust was placed in the judgement of teachers, there is now suspicion. What used to be accepted as anecdotal confirmation of progress is no longer acceptable ; everything has to be deeply, externally and empirically tested and teacher judgements are treated with suspicious disbelief.
There used to be joy in teaching and the profession was one people wanted to join. These days there is an increasing reluctance and teachers are largely wan, overtired, overworked and altogether dispirited.
Enjoy education and teaching but PLEASE beware of the pitfalls
EDUCATION, A LIFE FORCE 
It’s clear that you’ve witnessed significant changes in the education system over your long career as a school principal. The shift from appreciation to expectation and the erosion of trust in teachers is indeed a concern. Teaching has become more data-driven and standardized, which has its merits but can also diminish the joy in the profession. It’s important to find a balance between accountability and the well-being of educators to maintain a positive and effective educational environment. Your experience and insights are valuable for addressing these challenges.👍