Update to this story.

(CNN) — In swaths of Syria now controlled by ISIS, children can no longer study math or social studies. Sports are out of the question. And students will be banned from learning about elections and democracy. […]

It also said teachers must erase the phrase Syrian Arab Republic — the official name of Syria — and replace it with Islamic State, which is what ISIS calls itself.

Educators cannot teach nationalistic and ethnic ideology and must instead teach “the belonging to Islam … and to denounce infidelity and infidels.”

Books cannot include any reference to evolution. And teachers must say that the laws of physics and chemistry “are due to Allah’s rules and laws.”

The letter ends with a firm warning:

“This is an obligatory announcement, and all violators will be punished.”