It would take an intelligent person to make another understand that an education is an important part of ones development and increases the quality of life. And although genetics do play some role in intelligence, the value placed on education within the household probably plays a larger part. However, as the girl already stated "I should be be an archeologist for knowing all this shit." Education is probably never going to be something of value or something that can be expanded because she already knows all there is to know. So, in that case my solution is still the most effective: Sterilization.
You can get two babies in belly couple of months apart though. They're not twins they might not even have the same father but they'll most probably be born on same day. Magics of the vagina.
People who stay stupid stuff like this should be sterilized. Just to make sure it's not going to spread.
Just force them to go to school
You can lead a horse to water........
THAT'S NOT HOW THIS WORKS
Isn't that like rocks and shit