@Erin Kate: I am still reading aloud to my high schoolers doing AO (much of it is from SCM modules and literature).
But, yes, I move them along because AO’s HOE covers history in depth again. I love Churchill’s A History of the English Speaking Peoples.
I do take into account every book that Sonya recommends in the modules for high school and add any that haven’t already been read to the children’s lists.