Sorry to be a devil's advocate but after watching my two friends' kids as well as other advanced kids in dd's class, I wonder how a teacher who must only encounter a hg+ child once in a long time (if at all), would be able to distinguish a bright well prepared kid from a gifted kid. Especially during primary years and especially when the gifted kid has no interest in showing off their skills. I suspect the writer of the original article on this post has similar experience. He must come across at least a couple of well prepared kids with pushy parents every year, every class so when the parent with the real deal comes along, it is but natural to believe that he has just one more of the same.