Charter School:
Able to kick out students at will for things like possession of drugs, or violence. So you immediately know, no shit or you are out.
1-year renewable contract with teachers, so only good ones stay.
Ability to keep school student size relatively small.
Sounds like a real business. Maximize your efficiency. Get the best workers, ensure they are the best, and ensure the best results given your merchandise. Ok not quite 1:1 but close.
Now how to do this on a national level to ensure the best everywhere!!??! I guess the moral of this story that I got is that once the students were properly motivated the flourished, until then nothing good was happening. It is not just teaching, but sparking a curiosity of why they should want to learn.