My children attend a Steiner School. They are up to date with all thier vaccines. Its our choice, not the school's.
One of my children has a disability, and not the only child attending with special needs. There are no 'weird' ideas about disability here.
There is a lot of unclear/untrue things written about Steiner, but it really is a good alternative to State school.
The class sizes are smaller, more individual attention. More focus on learing at the child's pace and flexibility to adapt to each child individual needs.
It suits some children more than others just as state schools do. I/ my freinds/ family have all been accused or blamed for things that weren't our fault in state school too. It not something that is exclusive to Steiner.
As for SATS my eldest child attended at state Cof E Primary, but didnt sit the sats and it made no difference what so ever when they started secondary school.
Its a personal choice, but I would prefer Steiner over State school any day. Its really isn't as bad as you read. There is good and bad in every type of education, much is down to the school morale or the individual teacher. I've experienced several crap ones in my days at state school.