Raven's Matrices - above 98th percentile (this was conducted by school this year to determine selection for the gifted program. They begrudgingly told me the result verbally when I asked why he was not included).
So was your son eventually included in the gifted program?
In the USA it's illegal to exclude a child from a public school gifted program on the basis of disability. I have the sense that you're not in the US, and I don't know what kind of school you're in, but you should definitely find out more about your rights.
DeeDee
