Inquisition

Yesterday in the mail I got the local newspaper. It's kind of like a little pennysaver with some local news interest stories. Well, on the bottom of the front page was this article. In a nutshell, these parents chose to seek a religious exemption on vaxing their kids. The school district challenged this exemption. They said they doubted the sincerity of the parents religious beliefs and ruled that the kids had to have the shots in order to go to school. How do you prove someones sincerity?