I was late learning to read and was classed as "backward" until someone realised I needed glasses, as all the letters on the blackboard looked the same to me, eg e, c, o, u, v and other similar letter groups eg m, n, w etc.
My father used to "help" me but got so frustrated and angry that he always ended up shouting, so I used to try and hide my books.
When my reading got better I then devoured as many Secret Sevens and Famous Fives as I could.
I still have a pile of these.
We had a child in class that needed glasses. His sight also affected his reading so he was always sat in the front. And always a target for the headmaster. I was also a target but managed to avoid a lot of clips around the ear as I was tall and seated in the back.
Adult anger. Terrifying for children. While I don't think children are disciplined enough these days (for their own safety in most cases), I'm glad the days of the physically bullying teacher like my old head are over.