In 2023, all states require immunization of school-aged children. Checkmarks below indicate whether a state allows for any nonmedical exemptions from this requirement, whether for religious reasons or broader philosophical or moral reasons. (For more about data collection on childhood immunization requirements, please see the details here.)
Note on citations:
Where multiple laws are cited, the link is for the first listed. To find subsequent laws -or- in cases where a state's laws are not possible to link to directly, use the citation number to manually navigate to the statute of interest. For more precise information on citations as well as our reasoning behind each score, download the full data set which includes additional research notes.