I have several relatives who are in the Anthroposophical movement and Waldorf schools, including teachers, and although i recognize some good points in what they say and do, I am shocked by their degree of vehement anti-Catholicism. They often cite arguments that are plainly wrong.
Also Anthroposophical interpretations of the gospels are somewhat hairy to put it mildly. A lot of stuff is selectively being taken out of context to underpin principles of Anthroposophy, including reincarnation. They have lots of really wierd and creepy prayers that sort of displace God and pray to all sorts of everyday things instead such as praying to salt or to water.
Fortunately, and as far as I can see, they keep most of that out of the education side, so they typically won’t tell these things to your child directly, but this is the sort of thing the teachers have read and done during their training, and sometimes you need to bear that in mind to understand what they are talking about.
Another thing about Waldorf schooling is that it is very group and community focussed. My dad went to such a school as a small child and he was always a little ahead of the others, a strong thinker and somebody who asked questions rather than obeying orders. He always said the school was not set up to deal with this. So rather than giving him more difficult assigments to stretch him further, he was forced to do stuff that was too easy for him because all kids were expected to be in the same sort of group and teachers had very strict and inflexible ideas about what assignments were age appropriate. For example he got punished for teaching himself to read. He found the entire process externely boring, which is why he asked his parents to let him go to a different school.
.