Speaking only as an adult diagnosed with ADHD, I am surprised your child was not administered the TOVA test. I believe it's normalized for ages 4 and up.
I think that there is some controversy about the TOVA with some clinicians believing that it isn't a valid test and others liking it a lot. I don't think that anyone local to me uses it. My dd10 was dx with ADD w/out any formal testing beyond observation, input from her and us, and review of prior achievement and IQ data which is highly variable from one testing to another.
