Having worked in my field for 15 years in the lowest of low income areas,a top tier upper middle class suburb, and a working class first ring suburb I can say with conviction that you could swap the teachers from those schools and the kids by in large wouldn't notice the difference. There are great teachers at every school and there are really crappy teachers at every school. I'd argue that you'd often find better ones in the low income areas because they have learned how to do more with much less.
There are PLENTY of other disparities I could list for you that do make a palpable difference though.