First - the most basic. If you get tongue tied going into that type of meeting, be sure to write up some notes to work off of. I have found that helpful. I usually take my notes in on a pad of paper and check off the various points after I make them. I also take notes on what the teachers have to say - whether I care about it or not. It makes the point that I am listening. They like that.
As for the GAI versus FSIQ.... In my experience, school officials will look at what they have always looked at and are reluctant to see anything differently. Your most successful argument is probably to focus on the whole child - achievement test scores, FSIQ, and GAI. Ask if they are familiar with the GAI and give them the simplest overview you can find about what it means.
You may also be able to find something supporting the contention that the comprehension subtest is culturally biased and that many people question whether it belongs in an IQ test at all.
Good luck with the meeting. I hope it goes well. More often than not, we don't get what we want when we ask for it - but sometimes more sticks than we think. In October this year, a teacher mentioned to me some things he was doing with my children (now 4th and 6th grade) that I didn't know about. He got the idea from a PT conference we had a year and a half ago about my son. He listened and absorbed - and even though I didn't get what I asked for, I got more than I realized I had gotten.....
Mary
