Should be easy to publish the same stuff in US in English for a multimillionaire basketball player as a charity project unless they have family to feed .
How many millions of workbooks should we expect this basketball player to buy each year, over how many years?
Of course, in theory that kind of material should be created by some government entity which is responsible for education.
In general, my point is that if kids were able to study more or less successfully in post-war Soviet Union, Germany, Japan and eastern bloc countries then i seriously doubt that life for blacks is currently worse.
Since you have no basis of comparison, feel free to doubt.