On this page: About the National Data | Methodology | History
About the National Data
Data
Data Source: Annual School Assessment Reports, CDC/NCIRD
Baseline: 94.7 percent of children enrolled in kindergarten received 2 or more doses of MMR for the 2018-19 school year
Target: 95.0 percent
Methodology
Methodology notes
Data reflect the median of state vaccination coverage estimates. Estimates are obtained by combining states' estimates and weighting the vaccine-specific coverage levels reported by states and territories to their respective birth cohorts. Data are provided for a school year and reflect vaccination status at entry into school. For example, vaccination for the 2016-17 school year reflects vaccination coverage for kindergarteners as of start of the school year in 2016. States may collect and/or report data on selective antigens depending upon school entry requirements. Sampling methodology vary by state, which is a major limitation (e.g., some states selected a random sample of kindergarten children and others conducted a census of all kindergarten children).