>Then YOU give the data that shows IQ Tests to be accurate.

Go look it up. Your local university library has any number of
texts on psychological testing and instrumentation. When you've
read the literature and noted just how much effort goes into
measuring and removing bias, you can make up your mind.

I've taken the courses, and established my belief in the worth
of the standardized tests on that basis. But I don't feel the
need to 'recite' for someone whose mind is clearly already
made up, in the absence of anything but 'everyone knows' and
perhaps a few anecdotes.