Coleman’s comments lead me to suspect that he and other supporters of the Common Core have not thought their prescription out carefully. Traditionally, in high school English classes, two novels, at least one play and several poems are regularly assigned; that works out to 700 pages of text or more. In order to achieve the 70% ratio without sacrificing huge chunks of literature that would mean that more than 1500 pages of non-fiction would have to be parceled out across all subjects.
They must have talked about the issue when writing the "range of reading" standards, though, and decided not to include the lit/informational ratio in there. Why?