Dottie:
Wow, this is super helpful. Thanks much! I appreciate the helpful distinction between working and testing levels. I do agree that the average high school senior's writing in America is not in good shape.
Are the SS scores arbitrary or are they supposed to crudely shadow some other measure, such as IQ (realizing, as you rightly pointed out, that a suggestion of an IQ of 195 is practically absurd)? What is the maximum for these measures?
I'm going to tool around the website to see what I can find but I definitely welcome any particular suggestions you or anyone else might have for a series of books or other activities we might consider.