The United States Department of Education's measurement of the status dropout rate is the percentage of 16 to 24-year-olds who are not enrolled in school and have not earned a high school credential. This rate is different from the event dropout rate and related measures of the status completion and average freshman completion rates. The status high school dropout rate in 2009 was 8.1%. There are many risk factors for high school dropouts. These can be categorized into social and academic risk factors.