Notehand was my "classroom" introduction to shorthand, in the 1968-69 school year. It was the first--and only--year the class was offered in my high school, and it was open only to seniors. I was a junior but signed up anyway, and they let me in. Notably, the class was about 50/50 male/female, unlike the usual shorthand classes.
For some reason the Notehand textbook is extremely scarce. There are a few copies at abe.com, but they're pricey, and it hardly ever appears on e-bay. I still have my copy from high school (the 1968 edition) and a few years ago I found a used copy of the 1960 edition.