This is about equalizing the offense rates between the black kids needing expulsion and the white kids.
To equalize the rates the school officials make up rules that white kids are likely to break. Ayn Rand's quote comes to mind about government making so many rules that everyone ( even the white kids) become lawbreakers.
There is a **real** difference in the seriousness of behavior that gets a black inner city Columbus kid expelled and that of shooting a Nerf ball, but in the statistical reports these offenses will look the same and the school officials will look more racially even handed.
“The only power any government has is the power to crack down on criminals. Well, when there aren't enough ( white government school kid) criminals, one makes them. One declares so many things to be a crime that it becomes impossible for men ( white government school kids) to live without breaking laws.” ( Ayn Rand)
Ayn Rand
That's a very interesting observation which makes a great deal of sense.