I wouldn’t trust NVIC information. They are very anti-vax. State Health departments would be better for information.

A lot of Waldorf schools have a very high amount of unvaccinated kids. You are well within your rights to ask the director about vaccinated levels in your child’s class (not for which kids, but if there is a large number - and to me, 1 would be a large number unless it’s a medical exemption...)