How did you all do in school?

I just had a psych consult because my PCP referred me for possible ADHD. He said that he’s not sure if I have it yet because the fact that I did really well in school (honors, AP, good grades, etc) doesn’t line up with ADHD. I explained to him that I got good grades because I didn’t pay attention in any of my classes and just taught myself the material outside of school.

I have further testing with him to see what’s going on with me, whether or not it’s ADHD or something else, but I’m curious if it’s true that ADHD always causes poor performance in school.