This is going to sound harsh -- but why in the world did you start building without checking out the schools first I am just curious... cause I hear stories like yours all the time... just need to understand.
Actually, looking at the data, Bunche Middle School doesn't look that horrible, it is far above the district and nearly even with the state (and above in one or two categories.) It made AYP, which is absolutely fantastic for a middle school. It is small, under 800 students which is also a real plus.
2006-2007 State of Georgia K-12 Report Card
You need to visit the school before making a decision.
Woodward Academy is nearby but it is $$$$. I think there are some parochial schools south but I don't know their neams