A school can't correct for a class filled with poor single parent household kids who refuse to be educated. A class environment requires a basic level of deference to the institution school to operate. Good teachers can help create that, but most of it has to come from home.
Inner city black schools which are successful are selective and enforce discipline, they are almost all charter schools which can expel the dregs to the public school system. All comer schools which don't have any real measure to enforce discipline are the drain of the schooling system, in a region with lots of kids who simply refuse to be educated there is almost no escaping the suction of losers pulling you down with them.
PS. there's also unfortunate focus on college in the US high school system, a lot of kids would be better off starting apprenticeship early and finding joy in disposable income.