My son is in a Waldorf school and my understanding is that Anthroposophy is never taught in the classes. The teachers have an understanding of it, study it, and like zoebird said, they have different levels of commitment to it, but it is not *taught* to the children. Stories from different religions are brought to the class via the curriculum, but nothing is taught dogmatically.
And I know this wasn't in the original post, but someone mentioned above that the "dreamy, thoughful" kids are more valued in a Waldorf setting and my experience is the complete opposite of that. My son's own first grade class (now moving into second) was a bunch of wild hooligans! :) I know they will settle down, as their behavior seems pretty normal, but dreamy, they are not.
A few different topics within the discussion caught my eye and I can't remember who wrote what at the moment, but a couple of articles popped into my head while I was reading and I thought I would share them - I hope they don't seem out of place without linking them to specifics in the conversation.
One is the Survey of Waldorf Graduates: http://www.whywaldorfworks.org/documents/Survey_WaldorfGraduates.pdf Tells you statistics about graduates of the Waldorf system.
One is an article called, "Is Waldorf Christian?" and while it doesn't fully relate to the original post, I think the over all article will have some good information: http://www.whywaldorfworks.org/documents/2_Is_W_Christian.pdf
Personally, I can't imagine a better education for anyone - yes, there are the diehards and I think zoebird is right in that each school is different. Our particular school is pretty "normal." And by that, I mean that we don't seem to have many "diehards." People here could fit into the mainstream school settings well enough if they wanted. However, when we were looking at schools last year, we visited one that seemed waaaaay out there. Not every area has a choice of Waldorf schools, but yes, if you have options, you find the one that works for you.