we are looking into this option as well.
there is a state primary school that is offering duel education - 2 streams, tradition and steiner... you can elect which your child attends, however if the teaching staff think that they would be better suited to tradition they are switched over. Dont know if it would work, but it is local, so i am looking into it more.

A friend had her daughter in steiner kindy, then they spent a year OS where she went to traditional shool as it was not an option where they went, she had a place for prep/grade 1 in the steiner school, but her daughter prefered the traditional school system. So i guess the childs learning needs to be considered too.

We do similar things to Peach, but also go walking and talk about the environment and surrounds, garden and shop together and turn all these into a learning activity.
We also sing songs EVERY day - she has a book and she chooses her favourites and is now begining to join in.
In the bath we have letters and we choose the letter and give it a name (D for Daddy, M or Mumma etc) she is learning in such a fun enviroment, thats she doesnt know that she is learning... i dont think that she actually understands about the letters yet but can recognise A (Alex) B (balloon) D (daddy) E (elmo) F (fish) H (house) M (Mumma, Molly or Max) N (nina or Nanna) T (tea or tic toc - her name for my dad).
and basically we keep a running commentary on all that goes on in the day. she helps cook - tears lettuce or mixes things or pretend she is cooking.
there is learning with pretty much everything that we do...