Same. I was tested in 7th. Full battery work up too, it took two weeks to complete. They were trying to resolve the discontinuity in my poor grades and the glimmers of high intelligence my teachers occasionally caught glimpses of.
Turns out that I had the comprehension level of a grad student and trying to teach me at the level of my "peers" I found subconsciously insulting.
Maybe because teaching Sight Words instead of Phonetic Instruction has become controversial because it doesn't teach pronunciation rules needed for larger, more complex words you will need as you get older.
That's not speed reading, that would require around 1500 words per minute and is don't buy taking in chunks at a time. I am slightly above this qualification and it's a learned trait but this thing is going to actually site you down as it gets faster.
https://youtu.be/K8dIVNDMA_0
Turns out that I had the comprehension level of a grad student and trying to teach me at the level of my "peers" I found subconsciously insulting.