I went to a Waldorf type school (called a multi-year back when I was in elementary school). My classroom was 90 kids, grades K-3 in a room that was four classrooms with walls knocked down. No desks, self-directed curriculum, etc. I was in a 4-6 after this, which was more structured but still self directed.

http://fsd.k12.ca.us/rollinghills/multiage.html

This was my program. My sister and I went through it. To this day a lot of us still keep in touch with our teacher.

It was not strict Waldorf, more inspired by it and still is to this day.