Of course, the teaching of atheism should also be banned, or any 'isms' at all - communism, fascism, capitalism.

Also, many countries have historical narratives that could also be misconstrued as propaganda (and thus brainwashing) - the US, France, China, UK, Israel, everywhere, really.  Best to ban the teaching of history altogether.

To ensure that damage to the children is kept to a minimum, any attempt to impart 'values' on to the kids should also be strongly resisted. The whole area is clearly fraught with difficulties.  In fact, the only things we need to teach the children are arithmetic and reading (from totally neutral books - preaching neither Enid Blyton style colonialism or modern day multi-culturalism).

Perhaps it's best to keep children away from education altogether.