When I was a child, I had an IQ test done and they thought that I was mentally retarded. Years later, I ended up taking calculus and physics courses and doing just fine in them. I don't know how they expect children to sit through those things let alone anyone with the inability to concentrate.

For you, it was the ADHD. Having a short attention span can take a huge toll on an IQ test. Having a short attention span or inattention does not make you stupid. IQ tests also seem to forget that everyone is smart in their own way. Some people are smart in math and science. Some people may fail at math and science but they could have great social skills. Maybe someone else is very smart about cooking or saving money. IQ tests do not mean much.

I hope that you feel better soon.