Someone asked about vaccine exemption law. In Europe and Japan, vaccination is voluntary, for the most part. In all US states, vaccines are required for school, unless exempted for medical or religious/philosophical reasons. 15 states have philosophical exemptions available. 2 states do not even allow religious exemptions.
In Arkansas, religious exemptions were available by statute in the past; a judge recently denied a Catholic kid an exemption because she is Catholic; litigation is still pending. Other states have religious exemptions.

The Texas religious exemption law says:

A signed affidavit must be presented by the child's parent or guardian stating that the immunization conflicts with the tenets and practices of a recognized religious organization of which the applicant is an adherent or member. This exemption does not apply in times of emergency or outbreak declared by the commissioner of health or local health authority.

New York: Here is a NY court decision allowing one kid to have an exemption, and denying it to another.