WASHINGTON — America's teens are using more marijuana and less alcohol, according to an annual government study of eighth-, 10th- and 12th-graders across the country.
Some 6.1 percent of high-school seniors reported using marijuana this year, up from 5.2 percent in 2009, according to the Monitoring the Future survey released by the National Institutes of Health.
Marijuana use by 10th-graders climbed from 2.8 percent to 3.3 percent, and for eighth-grade students it edged up from 1.0 percent to 1.2 percent.
Binge drinking is on the decline. While 23.2 percent of high school seniors reported having five or more drinks in a row, that's down from 25.2 percent a year earlier. The binge rate for this age group peaked at 31.5 percent in 1998.
The survey conducted by the University of Michigan covered 46,482 students in 396 schools.
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