How about another take on the subject? This time by an actual teacher.
And here's what Wikipedia (that bastion of conservative thought - not) has to say on the subject of racial IQ differences.
United States test scores
Main article: Achievement gap in the United StatesRushton & Jensen (2005) wrote that, in the United States, self-identified blacks and whites have been the subjects of the greatest number of studies. They stated that the black-white IQ difference is about 15 to 18 points or 1 to 1.1 standard deviations (SDs), which implies that between 11 and 16 percent of the black population have an IQ above 100 (the general population median). According to Arthur Jensen and J. Philippe Rushton the black-white IQ difference is largest on those components of IQ tests that are claimed best to represent the general intelligence factor g. The 1996 APA report "Intelligence: Knowns and Unknowns" and the 1994 editorial statement "Mainstream Science on Intelligence" gave more or less similar estimates. Roth et al. (2001), in a review of the results of a total of 6,246,729 participants on other tests of cognitive ability or aptitude, found a difference in mean IQ scores between blacks and whites of 1.1 SD. Consistent results were found for college and university application tests such as the Scholastic Aptitude Test (N = 2.4 million) and Graduate Record Examination (N = 2.3 million), as well as for tests of job applicants in corporate sections (N = 0.5 million) and in the military (N = 0.4 million).
North East Asians have tended to score relatively higher on visuospatial subtests with lower scores in verbal subtests while Ashkenazi Jews score higher in verbal and reasoning subtests with lower scores in visuospatial subtests. The few Amerindian populations who have been systematically tested, including Arctic Natives, tend to score worse on average than white populations but better on average than black populations.
The racial groups studied in the United States and Europe are not necessarily representative samples for populations in other parts of the world. Cultural differences may also factor in IQ test performance and outcomes. Therefore, results in the United States and Europe do not necessarily correlate to results in other populations.
How about a picture? Below are the racial IQ distributions. Again from Wikipedia - "Mental deficiency used to be divided into the following sub-classifications, but these labels began to be abused by the public and are now largely obsolete: Borderline Deficiency (IQ 70-80), Moron (IQ 50-69), Imbecile (IQ 20-49) and Idiot (below 20). Mental deficiency is now generally called mental retardation."
Note that even with the optimistic mean IQ of 85, 37% of American Blacks have an IQ of 80 or less, and fully one in six are legally retarded.
Progressives claim to want to have a "conversation on race," but what they really want to do is tell everybody to shut up their filthy 'lying' mouths and stop talking about this reality crap. They can't handle the truth. Speaking the truth to a progressive is like throwing open the curtains and letting the sun shine upon a vampire. Except not as effective, because they don't burst into flames and die - they simple ignore inconvenient truths in favor of obeying the narrative of the moment.
But the people listening in will see who uses facts and rational argument, and who acts like a spoiled 3 year old throwing a tantrum when they don't hear the answer they were expecting.
The truth shall make you free. Embrace the power of telling a progressive "I don't care." when they talk about hurt feelings.
After all, progressives, er, SJW's always lie.