I grew up in a Danish town of 20.000 people and two schools. In my school there were 3 dyslexic children. They went to the "special" class 4 hours a week. I'm not sure what to call it, "special" isn't the right word, but it's not just because my English is not sufficient to come up with the right name. It's because this was the place they put all the children with what we'd call disabilities today. Some of the students in the class were only in that class, others like my dyslexic classmate only went to the class those 4 hours a week. It was also a full age range from 0-9th grades. As you might imagine it didn't exactly work.

Today we know that 10% of the population is dyslexic. So those 3 children should've actually been 80. Some of those 77 children could be in the group of adults who can't read.

What is interesting to me is that you rarely see people rant about the dyslexic the way you see people talking about something like ADHD.