Pay and qualification go a long way to achieve quality in teaching. To get excellent people to become teachers, you need to pay them at least similar amounts as they could get elsewhere and give them some guarantees that their job is safe. Changing back from being a teacher to the industry can be hard so the easiest way to get bright people to become excellent teachers is by educating them as teachers and promising them a secure job with good pay. That makes getting rid of bad teachers harder but that's subjective anyway. Sure, some teachers might be awful but most way to test this focus purely on academic outcomes which don't incentivize teachers to help poor students with little prospects.

I had crappy teachers for the most part.

I knew what I wanted though. Every class had 1-2 students that were hungry to learn, rest were there because easy money or such. Eventually dropped out and had a successful start to a career. Far outpacing those that stayed in.

That was a awhile ago.

I know some school have way better curriculums these days.

Still, I refuse to hire jr develops unless I see that same hunger to get better.