If you care about this, I’d suggest rethinking how much it centers around labeling some children as “gifted” and asserting that they are intrinsically more deserving of higher quality educational opportunities than the other children who were born undeserving.
Really, the general public isn’t that interested in a program that says other children are more talented than their own children, and that their tax dollars should therefore give their own children a second-tier educational experience.
This is the land of opportunity. Why not just offer advanced coursework for all who could reasonably succeed and whose parents are willing to drive to the school every morning?