?Q: Why do Black kids that go to school in Nigeria or Kenya excel in math, but Black kids that go to school in the US do not?
Why do Black kids in the US that have at least one Black teacher do better in math, and are more likely to graduate and go to college?
A: Because racist people are not good at teaching Black kids, and Black teachers can shield kids from racism.
Imagine if I taught at this school with this teacher. Wouldn't work. One of us would have to go.