I remember my schooldays, there were classes over the years where one child would be described as very slow, I can remember the names of them, they were so few, then there were quite a few who were bottom end of the class and struggled, they had a bad time of it, we left school at fifteen, you were in work next day or within the week, half your money went to your mother for keep. I cannot remember anyone who didn't work living by me. . Over the road was one boy, big for his age, always getting a belt from his father, always bottom of the class and in the corner, he was so isolated, he started work for the father's employer a haulage company. Don't know what happened to him. You didn't keep up, you were treated as either simple or naughty.No one wants those days back, it was cruel. Families were generally much bigger then and they didn't give preferential treatment to anyone.
Now most of my friends have a grandchild with either ADH or the Autistic spectrum.