Do your research before you take a decision about where to go and teach..Yes shine a light ,but not necessarily with Lrom53 who just had his own lesson . I'm not talking about that school but from what you said it sure sound tricky, anyway it's more about this part of the world.. teachers who don't know..Sudan is under the Sharia law so you have to respect that as you are in a Muslim country..Just to give you an idea, last year a woman from England who was a teacher in Khartoum was accused of insulting Islam because she let her own students name a teddy bear "Muhammad". The teacher was lucky anyhow 2 weeks in jail since that she was facing very harsh punishment as to up to 40 lashes, six months in prison and a fine.So keep in mind Sudan is not China..
so stick to your guns...