Of course, the school system has 2 options. Kick out as many gifted whiteys, asians and other non-blacks as needed so that the the number of gifted blacks in the program is equal percent-wise to the number of blacks in the school system or admit enough non-gifted blacks into the program so that the same goal is achieved without kicking anyone out. Of course, the effectiveness of the "Gifted" program is diluted since it will have to be dumbed down to keep up with the large number of ungifted students attending it.
Sadly, gifted programs in most districts are stacked with kids who aren’t gifted, just usually high achievers who got in because there weren’t enough gifted kids to put in or because of pushy parents who wanted their children to be in the programs.