Parents may also have difficulty enrolling a child who is not vaccinated. Schools ask for proof of vaccination prior to enrollment. If a child is already enrolled and a vaccine booster is not administered, parents may receive an exclusion notice requiring proof of vaccination prior to allowing the child back into the classroom. Schools do not typically inform parents that their child can be exempted from vaccinations. In North Carolina children can be exempted from vaccination based a religious belief or a medical waiver. The North Carolina Department of Health and Human Services website has information about the exemptions.