Local police investigators have confirmed that many individuals who have been apprehended for robberies were previously involved in the local drug trade.
Cheap buildings aren't enough. You need a full stack, top to bottom, crash program to attract businesses and encourage local entrepreneurship. A special economic zone means low or no taxes for X years, little or no regulatory interference (e.g., zoning laws, architectural requirements, ethnic/gender hiring mandates, union lock-in, etc.), just basically leave them alone and let them build a business in a war zone. Of course, you can't simply suspend OSHA, ADA, and anti-discrimination laws, but if you can make it cheap enough to conduct business, the incentives will outweigh the danger and inconvenience and they will come.
These areas are already very cheap to build in. Delaware, Pennsylvania, and New Jersey practically give away abandoned industrial sites hoping to find companies to take them over. Getting rid of regulations can be iffy. After all, the outputs of polluting activities in Camden flow down the Delaware River to a whole bunch of other people.
Fixing education in these communities is intractable. You can't teach kids in a community where gang leaders have more authority than parents. You have to fix the community before you can make a dent in the education problem.