Calif. school releases students unvaccinated for measles

"...While all states require that children receive recommended vaccines before attending school, some make it easier than others to get exemptions. Infectious disease outbreaks are more common in areas with large numbers of unvaccinated students..."
http://www.kvue.com/story/news/nation/2015/01/28/california-measles-unvaccinated-students-sent-home/22479001/