Here, let's just look at the differences in 8th grade NAEP student performance in each of those cities by the race of teachers students had in their respective 8th grade math and reading classes. For ease of comprehension, NAEP scores are converted into IQ estimates. The scores for both tests are on a 500 point scale, with a standard deviation of 37 on the math assessment and 34 on the reading assessment. In the subsequent table, these are converted into IQ estimates with a mean of 98--corresponding to the national average NAEP scores of 283.62 for math and 266.02 for reading--and a standard deviation of 15. The math and reading scores are weighted equally.
The first table shows the mean IQ scores for students of all races who were instructed by either white or black teachers (sample sizes were too small for Hispanic teachers):
But that's because white teachers are more likely to get white students! Er, white privileged students, that is--the fact that their white per se has nothing to do with their elevated performance over the black students, er, underprivileged black youths that black teachers end up with.
To a large extent that is correct, but explicitly articulating as much is several shiv twists too many for a mealy-mouthed SWPL to stomach.
Yet if you'll permit me to continue trolling, there's more! The next table shows the mean IQ of black students only by whether their teachers were white or black:
If we want to deal in culturally marxist terms where we don't take the primary determining factor in student performance--the intelligence of the students themselves--it seems we are forced to conclude that white teachers are not only better instructors on the whole than black teachers are, but that white teachers even do a better job teaching black students than black teachers do. The data are so racist!