the city school system is indeed abysmal by pretty much any metric you could choose to evaluate (test scores, high school graduation rate, violent incidents, odds of imprisonment, etc).

I'm familiar with the argument that the cohort of students matters more than the quality of instruction. in fact, that is what I'm getting at here. the city has an explicit policy of mixing students from different backgrounds across the school system, the goal being to break the cycle of poor students going to poor schools and staying poor. it's a good goal, but it seems kinda pointless when all the students they are trying to mix them with are fleeing to the county.