I'll correct that for you... NOTHING has been taught in public schools. Teachers aren't teachers anymore, they are underpaid (for the most part) babysitters

Not allowed to make an "X" through an incorrect answer anymore... X is too harsh, it might "damage a child."
Not allowed to use red ink anymore, red is too embarrassing and painful and will "damage the child."
Not allowed to discipline the child for misbehaving, they must discuss emotions so as not to "damage the child".
Not allowed to hand out F's anymore, they make the child feel like a failure. (Anyone see the irony?)
Not allowed to give pop quizzes, they cause too much sudden anxiety.

Political correctness is setting this country up for a major disaster, economy be dam**d.