The Asians, fine competitive people, move in and enjoy warm friendships with the whites. It feels extra nice because they expect their kids will do well at the school. The whites feel less good because many of them expect they won't do so well with the fierce competition from the Asians. It's all entirely rational, for the Asians to regret the whites leaving, and for the whites to leave.

For the Asian author, who already said as much to call it racism that "cuts so deep", is cute. She doesn't like that the whites, fine people too, are engaging in self defense. Asians are supposed to be clever and that's OK, but it's racism when whites are clever too.