Last month, the University of Michigan released their annual Monitoring the Future survey which shows a dramatic year-on-year decrease among teen’s use of cannabis – as well as other controlled substances. They found a 33% reduction among 8th graders’ reported cannabis use, 38% drop among 10th graders, and  13% drop among 12th graders. “The percentage of students who reported using marijuana (in all forms, including smoking and vaping) within the past year decreased significantly for eighth, 10th, and 12th grade students,” write the authors.