That's not how they are selecting the rest of the students being taught there.
The likely comparison is this.
Hand selected rich white kids.
Possibly hand selected poor black kids.
Why not any hand selected poor white kids?
She's home. Hand selected rich white kids. Hand selected poor minority kids. Outcomes essentially equal. She's not part of the selection committee, so she doesn't know any more than that.
It's the classic nature vs nurture argument. This anecdote illustrates the value of nurture.
No,..you've got to totally eliminate the hand selected part before you can claim the value of nurture.
Basically, it's just another example of the Social Justice Warrior mentality. Find some high achieving black kids and pay their tuition so diversity can be achieved.
Affirmative Action in the private sector.
