Cat - OK, here goes. I think Steiner kindergartens are great, very homely, rythmical, lots of outdoor play, creative, hands on. Natural materials, linking in with the seasons and nature, the children are generally happy and nourished there.
Further up the school the lack of headteacher can be a real problem when it comes to dealing with difficult parents, poor teachers, discipline problems etc. If your child is lucky enough to get a good class teacher, then I think the curriculum is excellent, unfolding with the child at each stage of development. The lack of external assessment means the teacher is free to adapt the curriculum to the inividual children in their class but also means you're not really sure how your child is doing compared to the mainstream, if that's an issue for you. If you find a Steiner School that goes to age 16/18 the children will probably end up covering a similar amount of work to those in other schools, BUT they start the academic learning later and more slowly so if have to move them to another school at any point you'd have catch-up work to do in reading/writing/maths. Obviously if home-ed is also an option then you have nothing to worry about. Steiner education tends to stimulate not stultify their interest in learning.
There is a lifestyle expectation - home life rhythm, limited TV/computer etc and some parents and teachers can be very hard-line to the extent that they can be dismissive of those who try to live with a foot in the Steiner world and a foot in the modern world.
I had a look at your other posts and you sound like you're on a similar wavelength to Steiner thinking.
My children are happy at school. I find it all a bit hard work sometimes. Lots is expected of the parents in terms of supporting the school and some schools do shorter days and have longer holidays. Also,
On balance I would say I am pro the Steiner approach, but you really need to check out the management of whatever school you're interested in.
I'll be happy to answer any other questions!