Seems like hindsight bias to me. I do not think they would have been able to accurately predict the public reaction. Such errors can also drive customers to the competition.
Quite the opposite, unfortunately. The misinformation is there on purpose in order to satisfy the demands of a massive customer:
http://www.theatlantic.com/education/archive/2014/11/was-moses-a-founding-father/383153/As mentioned in the article, the Texas school board selections often go way beyond Texas.
It must be remembered that parents are not the customer base here.