In a study of 11,426 teens, 25 percent said they had already smoked marijuana. About 13 percent said they had smoked marijuana during the previous month, and 6 percent had smoked more than four times in the past month.
Many parents find these statistics alarming. Our marijuana use calculator can help you assess your teen's likelihood of using marijuana. The answer can help you educate your teen about the consequences of substance abuse.
This test should be used only as a guideline and is based on information found in the National Longitudinal Study on Adolescent Health.