Wednesday is the deadline for Oregon parents to make sure their children's immunizations are up to date or they could be excluded from school.
The shots are required by law for community health.
A Public Health Division coordinator, Stacy de Assis Matthews, says if school vaccination records are not up to date, the child will be sent home.
Parents may seek an exemption for religious reasons.
KATU reports a bill under consideration in the state Legislature would require parents who opt out to submit a signed from from a health care provider or complete an online educational video. Backers with the Oregon Pediatric Society say parents who opt out should know the risks.