OK atheist with pagan tendancies here.
I also from time to time teach a unit of 'Equality and diversity in the care sector' and it brings up a lot of what you are all saying. I tend to teach it as the teaching of X says a,b,c but not everyone follows all of. So not all muslims abstain from alcohol, that sort of thing.
I also teach that it doesn't matter what someone believes you must respect that belief. If you ever have to remove a religious symbol, say to wash someone, always ask first.
Things I've been told be stroppy teenages:
If you are RC you are not a Christian.
Baptism and Christenings are totally different things.
You should always allow an RC priest on to a hospital ward, but an Iman only in office hours.
I'm usually asked at some point. 'what are you miss?' and if I tell them I'm atheist then they ask 'So what stops you murdering people then?' and other similar questions.
I refer to teach this unit in multicultutral classrooms so that, if they want to, students can explain their own beliefs, and how some things are cultural such as covering your head.
By the end of the unit I hope I have educated them to not make assumptions about a person because of their faith, dress or skin colour. I hope they have also learned to treat people and their beliefs with respect.
I also try to get them to examine their own beliefs and the impact that might have on them / their working lives.
An example I often use.
You are a staff nurse. You are in a ward where an elderly Muslim gentleman is being treated for end stage cancer. He is in vast amounts of pain. He does not speak English.
Earlier in the day the doctor has prescribed morphine. The gentleman's family have said he is devout and does not believe he should recive opiates.
Questions I ask the students.
You know you can give this man medication that will take away his pain. How do you feel about not giving him a painkiller that you know will work and that has already been prescribed. Would that upset you?
Should you give the morphine and not tell him or his family what it is? What they don't know won't harm them and it will stop the gentleman's pain.
Do you accept what his family say at face value?
This usually develops into quite a heated discussion.