My cousin is somewhat dyslexic. He reads with difficulty, having to sort of push the words on the page together with his eyes and tediously build them up into paragraphs and such. He did not learn to read at all until he was past 30. The look-say and whole word crap that was all the rage when he was in grammar school in the 50s and 60s (yes, 50s) made reading impossible for him then. Schools in the more progressive areas were also not really grading, some just giving everyone As and Cs, the Cs being for those who learned not much of anything so Cuz got graduated. Fortunately he had a flair for things electrical and did very well with radios and later, computers.
Phonics teachers call that Dysteachia instead of Dyslexic. It is a problem that many suffer from and this child abuse is occurring every day still in most schools across America.