When I went to school in Sheffield, UK we had a course for religion. I think it was obviously just the major ones and I got grouped into 'non-relgious' where we studied other religions. I'm assuming it's probably without the piety and single-focus of the other classes, but I can only assume.
I also think there's value in learning other religions due to their connection with history and the arts and stuff.
I'll take hippie and grandpa. Yoga is nice and shit. Grandpa, I can just tune out. The others bother me far more than I like for some reason.