The hundreds and hundreds of middle school students we see are more concerned with managing teacher expectations and less with learning. Standardized tests calibrate approval exclusively with right and wrong answers instead of any grasp of why an answer is correct or, better yet, why the question was posed in the first place.
Teenage girls are sensitive to the way people in authority talk to them, especially their mothers. They are easily wounded, feel criticized, and vulnerable when they sense or get outright disapproval. However, mothers are only trying to shape them up to be young women and don't understand their sensitive narcissism.