Notes:
Students were asked, "On how many occasions (if any) have you used marijuana in your lifetime?" The graph shows the percentage who indicated they used marijuana on at least one occasion in their lifetime.
Students were asked, "On how many occasions have you used marijuana during the past 30 days?" The graph shows those who indicated they had used marijuana at least once in the past 30 days.
Students were asked, "Think of your four best friends (the friends you feel closest to). In the past year (12 months), how many of your best friends used marijuana?" The graph shows the percentage who indicated that at least two of their friends used marijuana in the past year.
Students were asked, "In your opinion, on how many occasions do you think most students in your school used marijuana during the past 30 days?" The graph shows the percentage who indicated they think most students used marijuana at least once during the past 30 days.
Students were asked, "If you wanted to get some marijuana, how easy would it be for you to get some?" The graph shows the percentage who indicated that marijuana would be very easy or sort of easy to get.
Students were asked, "How much do you think people risk harming themselves (physically or in other ways) if they use marijuana once or twice a week?" The graph shows the percentage who indicated they think there is a moderate or great risk of harm. This question was added in 2018.
Students were asked, "How wrong do your parents feel it would be for you to use marijuana?" The graph shows the percentage who indicated that their parents would feel it would be wrong or very wrong for them to use marijuana. This question was added in 2018.
The students were asked, "How wrong do your friends feel it would be for you to use marijuana?" The graph shows the percentage who indicated that their friends would feel it would be wrong or very wrong for them to use marijuana. This question was added in 2018.