So your suggestion above to use g-loaded tests that are difficult to prepare for -- effectively IQ tests -- would not solve the "problem".
That was only part of my suggested solution. The other part was to establish schools or programs for gifted students in each neighborhood. This would also cure problems related to commuting long distances to get to one of a very few schools.
Regardless of whether or not you believe that IQ varies among different ethnic groups, it's irrefutable that there's always going to be a top 2% or 3% in any group. Kids in this group need their own instruction compared to the group
they're in, regardless of the scores of
some other group on the far side of a gigantic city.
