I assume you don't work in HR/Hiring, based upon your posts on this site. On what basis do you make the above generalization. The evidence shows a disparity; absent evidence that there is some other reason, and in light of other historical examples of men discriminating against women (voting rights, etc.), the logical conclusion is the disparity is due to sexism; again, unless you have evidence otherwise.
Regarding pay, I would be very interested to see pay stats in science in math for various races. However, the status need to include location and experience. For example, I can assure you that a black software engineer in Northern California will be making significantly more than me with the same experience living in Florida.
On a systemic level, no.Do you agree that current racism affects the pay, education and opportunities of Blacks?