Ignoring the ideology - maybe, in a roundabout way, if this causes the middle-class and above to move their kids to private education in response, this will act

Ignoring the ideology - maybe, in a roundabout way, if this causes the middle-class and above to move their kids to private education in response, this will actually achieve its aims, in that the next time they sample gifted kids in public education, a larger percentage will be *ahem* "ethnically diverse"?