West Virginia is apparently only one of 2 states in the U.S. that to do not have a religious or medical exemption for vaccination of school children. The Federal District Court ruled in the case Workman v. Mingo County Schools that the school district could override a doctor's note, seeking an exemption from the H1N1 vaccine in that district. The vaccination is required as a condition of attending school.
Obviously the more potent issue is whether a court in West Virginia would rule differently if the issue was a preschooler seeking to be exempted from vaccination because of a concern regarding autism. Given the strict construction it would appear that parents in that position would be hard pressed to have the court uphold any exemption even where the concern is over autism.
In Illinois, where exemptions are recognized, I had a school district refuse a doctor's note because the particular doctor had established a reputation for a being an "autism mill." He wrote prescriptions so frequently his credibility and the basis for his medical opinion had become suspect. I filed suit for the parents and after significant time spent negotiating and wrangling in court, a compromise was reached and the child was permitted to go back to school without receiving vaccinations, with a note from another doctor. Issues relating to vaccinations are hot button topics for many school districts. Parents would be well-advised to establish the bona fides of their claim to an exemption claim, either medical or religious, to avoid expensive and time-consuming battles with the school district.