I went to Steiner school, and it's true that the theory is essentially nothing-but-crazy. But the practice of it can be utterly fantastic, and at least where I went the theory was entirely unmentioned. In the final half hour of school we had a lesson on "where did the last 14 years of your education come from?" -- we apparently (for example)
literally have seven bodies, but you would thankfully never have guessed it from those 14 years of education.
If I had to pick a single strength of Steiner education, it would be that it genuinely believes that traditional academic skills aren't the only skills worth having. Lots of guff is spouted elsewhere along these lines, but at Steiner school people who were good at sport or art or whatever were genuinely just as valued as geniuses in writing and maths, which gave the place a lovely ethos.