I like the idea of teaching al of the different versions, buthae the same concern as hoa when he says
these seemingly will be taught/discussed in a science class/setting. That is where the problem is, IMO. These creation myths are most likely going to be given factual credence.
The understanding of science amongst the general public is woeful already and I worry about giving up time in the science class to this sort of thing. I'm also concerned about the confusion this might sow.
My son, in Year 7, has been taught about different religions in school, but they have been taught as part of religious lessons. However, none of it centred on origins and creation stories, but spent most of the time explaining religious festivals like Eid, Ramadan, Hannukah, Passover, Christmas. It's given him a good understanding of cultures he comes across, but he remains a firm proponent of evolution, based on his visits to the Natural History Museum. I've just quizzed him on this and,while he believes in God, he doesn't see what this belief in God has to do with evolution. To him it's like looking for a link between football and maths.