Welllll...we are using Quest for Royals and Revolutions this year along with The Great Courses World History.
WP is light. Very light. The history is disjointed and is JUST reading. No questions, no meaty assignments. There is some decent mapping, but the 'extra' assignments are pretty juvenile. I really do not think it is high school worthy, although we are using it for 10th. I have a few other History texts laying around and I supplement with those.
I chose not to use their LA because it is not complete works and I plan on using SL for British Literature. We are using the Literature portion of SL's Core 200 this year which I feel is more than adequate for my average student.
I wouldn't recommend this WP course for HS.