Schools in poorer neighborhoods struggle because the people who live there are struggling.
The charter school model is attempting to solve the problem in a vacuum, but the problem does not exist in a vacuum.
Some people have never heard of Goodhart's law and it shows lol. It leads to terrible ideas like this which make the same mistake again and again.
I want you to think -- really think -- about the ambiguities in "perform well academically". How do you measure this? Test scores? Grades? If it's grades, then you've just given everyone at that school an incentive to never fail anyone, no matter what. If it's test scores, we already know that leads to teaching to the test, which hurts academics in general. It massively incentivizes cheating and fraud. It incentivizes kicking out any student who has any problems whatsoever.
For every complex problem there is an solution that is clear, simple, and wrong.