I dont't want to generalize, but if there is one thing I have learned from my limited experience working in both a Title I HS district and a fairly affluent K-12 district is that these problems are very, very complex.

aik, Here's one example of a downside: Even relatively well-performing school districts can struggle when their student population starts moving to a new charter school in the area. Since many of the costs for education are fixed within a certain margin, it becomes difficult to shed costs to compensate for the lost funding for each student that left the district.