It's not clear to me exactly what your objection is. It's a fact that in may countries, including my own, people of some races/skin colours/ethnic groups/however-you-want-to-do-the-classification/ do worse at certain tests. It's not racist, it's a measurable correlation
. That's a matter of concern that I, for one, am keen to address because it's not good for my country.
of these correlations are, of course, complex, and fixing the problems is not a trivial matter. It will take generations...