"I read Zinn’s book several years ago because it was the assigned text in my youngest son’s US history class at Gettysburg High School. (My son jokingly referred to it as “The Victims’ History of the United States.”) Unfortunately for the students, the teacher never placed the book in historiographical context, and so most of the students in the course came away thinking that Zinn’s interpretation was the final word on the subject." (Emphasis mine.)
A reader posted the above at Kevin Levin's blog. Based on this and other comments, perhaps it's at the high school level where Zinn's book is being most "abused." Again, I think the main argument in my original post has been confirmed.