Even if Blacks get CS/Engineering degrees, they can still be less competent than Asians/Whites. Tech companies attract the most talented people (e.g. Google gets millions of job applications per year) and they can pick those who are the most competent/best in class. Those are usually Asians and Whites. For example, if 10% of all CS degree holders are Black, you can't expect that there will be 10% of Blacks at tech companies.
*SAT-Mathematics
White - 534
Black - 429
Asian - 598
Even if Blacks get CS/Engineering degrees, they can still be less competent than Asians/Whites. Tech companies attract the most talented people (e.g. Google gets millions of job applications per year) and they can pick those who are the most competent/best in class. Those are usually Asians and Whites. For example, if 10% of all CS degree holders are Black, you can't expect that there will be 10% of Blacks at tech companies.
[1] https://nces.ed.gov/fastfacts/display.asp?id=171