Another commenter included a source: https://www.precisionvaccinations.com/waldorf-association-sc.... The article gives the rate of non-medical exemptions (for immunizations) for some Waldorf schools, but doesn't give the state average for NMEs (which, as an aside, seems to have been legislated away in California recently). Nevertheless, the numbers are over 50% which seem staggeringly high for an exemption rate. It's also not surprising that a school that embraces technological asceticism has its share of parents who embrace the anti-vax movement.