What would be interesting to see is how IQs are affected by challenging course work, whether extracurricular or in gifted classes.

Have IQs at 5, when many people are testing and then again at 10, and what kinds of course work the child had, whether the parent had to accelerate the math at home or not.

And then again at 15. Where was the child? IQ, grade level, and do comparisons. I wish Davidson would do something like this since they admit so many kids young. They could request retesting at certain ages and then have some good material. But they don't.