This year, daily marijuana use exceeded cigarette use among 10th (2.5 vs. 1.9 percent) as well as 12th (6.0 vs. 4.8 percent) graders.
Links
[1] https://www.drugabuse.gov/publications/drugfacts/monitoring-future-survey-high-school-youth-trends
[2] http://www.rethinkpot.org/tags/monitoring-future
[3] http://www.rethinkpot.org/tags/2016
[4] http://www.rethinkpot.org/tags/youth-usage