Rates of current and lifetime marijuana use among Colorado high school students has dropped since the state's voters made marijuana legal in 2012, according to a Thursday press release from the Colorado Department of Public Health and Environment.
“Thirty-day marijuana use fell from 22 percent in 2011 to 20 percent in 2013, and lifetime use declined from 39 percent to 37 percent during the same two years,” according to the release. It has dropped nearly five points since 2009 (24.8 percent), when hundreds of medical marijuana stores began opening throughout Colorado.
The state began regulating medical marijuana in 2010. The CDPHE release says the drop from 2011 to 2013 is not statistically significant, but it appears the drop from 2009 to 2013 could be. In either case, it is clear that use among high school students has not increased.
Nationwide, the rate of current teen marijuana use increased from 20.8 percent in 2009 to 23.1 percent in 2011 and 23.4 percent in 2013, according to the U.S. Centers for Disease Control and Prevention’s (CDC) High School Youth Risk Behavior Survey (YRBS). The national rate of lifetime use increased from 36.8 percent in 2009 to 39.9 percent in 2011 and 40.7 percent in 2013.