What exemptions should exist for school vaccination requirements?

[politicus]

Wiki:

"A survey of Amish parents in Ohio published in Pediatrics in 2011 found that only 14 percent had not vaccinated their children. In addition, the study concluded that "The reasons that Amish parents resist immunizations mirror reasons that non-Amish parents resist immunizations." Similarly, a 2006 study by researchers from the CDC, based on a survey sent to residents of the largest Amish community in Illinois, concluded that the Amish may not object to vaccines very often, and that when they do so it may not be for religious reasons."