FWIW, my DD12 would be considered a "late reader" (5 years old) in this crowd. DD is a strong math kid. When she was in sixth grade, her gt teacher asked what age all the kids had learned how to read. DD was the latest reader in the class but she is easily one the top performing kids in her GT classroom with the highest Explore composite score in her class (it was DYS level). I have no idea how everyone's IQs compare. Maybe there is a stronger correlation between high VCI and early reading than there is if your kid is stronger on the PRI?