Poor areas don't pay much. It's hard to get teachers to start with let alone firing them all and starting over.
I believe you are simplifying the problem quite a bit. The chances of it being the fault of ALL the teachers in a low performing school, are pretty slim.
Look at the administrations that allow dead wood teachers continue to pick up paychecks at the expense of the kids.
Simply blaming the teachers is a narrow minded way of thinking which seems to be in the water around around this site so I am bringing my own.
Teachers are just one verifiable. It could be a number of factors from the student not wanting to learn to their home life to being bullied.
It's not easy to hire "good teachers" in poor areas when they earn less and have a more difficult. There's little incentive for people to work in poor schools, so the quality tends not to be as high as it could be. Thus perpetuating the vicious cycle...
That's absolutely ridiculous. The problem is not the teachers and I'm sure you know that so thank you for drawing attention to the issue.
Unfortunately we have an anti-education, anti-intellectual president and republican dominated senate so it's likely to get even worse than their voucher program has already made it.