The school my kids went to found that at the end of high school, class rank was pretty evenly divided between those who were identified at gifted and those who weren’t. I think only around 10% were identified as gifted in elementary school and put into a one day a week pull out program.
When the school needed at make cut backs, they wanted to end the one day pull out. The parents of those “gifted” were outraged. How could they?