If what you are saying were true we should be seeing Asians spending the least time studying and Black students studying hard. But your hypothesis is not only untrue, it's the opposite of what we actually observe.
What we do see are the systemic effects of an entire society normalizing a whole host of racist behaviors, including trying to play the struggle Olympics by comparing one racial group (who have a whole different set of issues) to another.
Your who premise that Black students are not rewarded for academic success - which other commenters asked you to substantiate and you refused [1] - is untrue, and you've resorted to accusations of racism instead of trying to argue your point.
That literally does not make sense logically.
And I didn't refuse to do shit, I literally gave a dozen sources that all support my claim that black people have a whole host of things working against them when it comes to performing well academically. I disagreed that I haven't "proven" what I claimed when I very clearly and undeniably did exactly that.
See this list for a very small start into understanding why the same amount of "hard work" won't help a black person succeed academically in America.
You now want to tell black kids that everything's shit so there's no point trying, then point to the inevitable result of that lack of effort as racism? Are you not the racist?