Main Results Between 2005 and 2011, a total of 20.2% of high school seniors reported 5+ binge drinking, 10.5% reported 10+ extreme binge drinking, and 5.6% reported 15+ extreme binge drinking in the last 2 weeks. Rates of 5+ binge drinking and 10+ extreme binge drinking have declined since 2005, but rates of 15+ extreme binge drinking have not significantly declined. Substance-related attitudes, socializing with substance-using peers, the number of evenings out with friends, and other substance use (cigarettes and marijuana) predicted all 3 levels of binge and extreme binge drinking. Conclusions Binge drinking at the traditionally defined 5+ drinking level was common among high school seniors representative of all 12th graders in the contiguous US. A significant segment of students also reported extreme binge drinking at levels 2 and 3 times higher.
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