I've heard this too many times,
more often by students that couldnt fly and were washed out or had a hard time with instructors because they just couldnt fly.
I have many black Kenyan friends who I trained with and they never had any sort of racial problems mention by you. But like I said earlier, I know many others that couldnt fly, maybe because they were just not meant to become pilots and some of them came out saying similar things you saying
I also dont understand why 43 Air School
management like you said, "are downright biased against black folks especially those who are company sponsored" Makes no sense to me mate!!! I think they are maybe more strict with company sponsored student to make sure they of a high standard and popularity to companies who send their pilots to train there.
So please don't blame racism...