A study released by the Centers for Disease Control and Prevent found that more high school students in the United States smoked marijuana than cigarettes.
23 percent of high school students surveyed for risky behavior stated that they recently smoked marijuana, compared to 18 percent who stated that they smoked cigarettes. An early health survey conducted by the University of Michigan also found similar results. In that survey, students said that they smoked marijuana because the see it as being less dangerous than cigarettes.
Source: Associated Press, “More US high school students now smoke marijuana than cigarettes, CDC survey says,” Washington Post, June 7, 2012.