Yeah, that's definitely a contender for this month's winner in the Ultimate Bad Homework Question Thread.

In that situation, my ten-year-old would definitely have been correcting teacher when he was four. He would have given a lecture on the subject if he could have, even ("No, that's wong! Sedimentawy wock pwoves that dimos lived a long time befowe people!")

Is there any point in asking the school about this?