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

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.