The economies of scale will still allow specialized classes for those qualified in the public system.
A special program to tell people they are special is probably not the investment needed at this time.
These programs provide challenging material to kids who are more capable while leaving room for teachers to create more appropriate coursework for everyone. Do you think those kids should just nap all day?
Your preferred system seems to be to lower the standards instead of raising everyone up. Interesting, I wonder why.