Your posts literally are a string of incoherent platitudes. You have absolutely no semblance of a reasoned argument. you have not responded to my post whatsoever. I have attempted to spoon feed this to you. If you don't get it, then there is clearly something wrong with your critical thinking skills.
It might be this:
What we have are functional illiterates, they can read, but they do so at a level where they can not understand a manual or a textbook. These people are hard to discover, and most can live productive lives in specific jobs. Discovering them are relative hard and forcing them to continue in school until they "can read" are counter-productive.