Dear 100 Hour Board,
What secondary school level subject has the most charged-up pressure groups of parents/others trying to tell textbook makers how to make the textbooks?
-betting on American history
I was unable to find any reputable statistics on this subject, but my guess would be different than yours: biology. That guess is based largely on the historical controversy surrounding evolution, because I can't think of any other subject that promoted a trial of national magnitude like the Scopes Monkey Trial.
That being said, if any of our readers are textbook makers, please leave a correction and enlighten us.