My daughter took WPPSI at age 4.5 and scored 147 FSIQ, with no apparent probs, no red flags with subtests, etc. That's somewhere around 99.9%ile.

Fast forward to age 8 and she just got this on Cogat:
Verbal 98%ile
Quantitative 71%ile
Nonverbal 97%ile
Composite 95%ile
and on the NNAT, 92%ile.

I guess my question is how smart is she? Should I be trying to have her do things like CTY or Davidson (which I WAS thinking of, based on FSIQ) and should I be treating her like just a 'pretty smart kid"; i.e., 92-93 %ile instead of 99.9? Or do the tests measure totally different things? ARGH! It's confusing!! Thanks in advance.

Despite being fascinated by IQ tests and the topic of intelligence in general, I find I like less and less IQ scores because they are based on normal scores. With pretty much only tells you relative other kids who took a test at a certain time. It doesn't tell you if your 8 year old could build their own rocket in your garage, or learn a language fluently in a year, etc. An IQ on this test doesn't equate to an IQ on that test. A culturally fair non-verbal test of IQ shows a lower IQ for a verbally gifted kid. A screening tool that is really only sensitive out to a certain point is used to give scores that it isn't designed to give, etc.

What are your observations? Is she reading many levels above her age? Are people amazed at how quick she understands things? Is she very curious, asks deep questions, dives deep into topics? Frustrated at school? etc. That's the real stuff, the scores are labels to try to communicate the real stuff to other people.

Achievement tests are probably more interesting in terms of actions to take, because they tend to guage a level of material that fits rather the comparative scoring itself.

I don't think any of those scores are necessarily accurate because IQ was done when she was only 4 and the other tests are dumb. DD had a 30+ point gap between her CogAT composite and WISC GAI. The main problem with the CogAT was that she is slow and didn't finish it. If she had, it may have been more like her WISC scores.

Yes, the tests measure different things.

Here is a link to Hoagies Gifted Education Page which provides a helpful introduction to several tests: http://www.hoagiesgifted.org/tests.htm

Here is a link to an article on the Davidson Database with a nice overview on various tests:
http://www.davidsongifted.org/db/Articles_id_10718.aspx