I have worked with some ignorant people, but if they are willing to apply themselves they can usually learn what they need to know to do the job well. But if they are not motivated to apply themselves (”the world owes me a living”) then they do not last, and for good reason.
All the kids need are ”Play and Talk” cds from homeschooling supplies. They listen to the cd while following in the book and they will learn how to read quickly. They will also learn grammar and spelling rules. They only need to do half a cd a day. I used them on my two boys and was very happy with the results. Instead the public schools have a stupid read by site system in which they don’t even know about syllables.