I was using "good school" in response to the parent comment's use of it. I didn't define it, but in fact I agree with nearly everything you wrote - the fact is

I was using "good school" in response to the parent comment's use of it. I didn't define it, but in fact I agree with nearly everything you wrote - the fact is that what we call "bad" schools has more to do with the extraordinary social challenges those schools face vs. more well-off schools. However, you don't have to eliminate the wealth/income gap to achieve that. Providing social supports enjoyed by wealthier areas (universal Pre-K, universal healthcare, drug/alcohol treatment, small business loans) will help significantly.