Monitoring the Future is an ongoing study of the behaviors, attitudes, and values of American secondary school students, college students, and young adults. Each year, a total of approximately 50,000 8th, 10th and 12th grade students are surveyed (12th graders since 1975, and 8th and 10th graders since 1991).
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30-day prevalence of marijuana use within grades 8, 10, and 12 in the U.S. 1991-2024
Around ** percent of U.S. respondents in grades *, **, and ** in 2023 stated that they used marijuana/hashish within ** days. This survey shows the 30-day prevalence of use of marijuana/hashish for grades *, **, and ** combined, from 1991 to 2023.
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NIH, & NIDA. (December 17, 2024). 30-day prevalence of use of marijuana/hashish for grades 8, 10, and 12 combined from 1991 to 2024 [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 29, 2026, from /statistics/209028/us-30-day-prevelance-drug-use-grades-8-10-12-since-1991/
NIH, und NIDA. "30-day prevalence of use of marijuana/hashish for grades 8, 10, and 12 combined from 1991 to 2024." Chart. December 17, 2024. ÌÇÐÄÆƽâ°æ. Accessed July 29, 2026. /statistics/209028/us-30-day-prevelance-drug-use-grades-8-10-12-since-1991/
NIH, NIDA. (2024). 30-day prevalence of use of marijuana/hashish for grades 8, 10, and 12 combined from 1991 to 2024. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 29, 2026. /statistics/209028/us-30-day-prevelance-drug-use-grades-8-10-12-since-1991/
NIH, and NIDA. "30-day Prevalence of Use of Marijuana/Hashish for Grades 8, 10, and 12 Combined from 1991 to 2024." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 17 Dec 2024, /statistics/209028/us-30-day-prevelance-drug-use-grades-8-10-12-since-1991/
NIH & NIDA, 30-day prevalence of use of marijuana/hashish for grades 8, 10, and 12 combined from 1991 to 2024 ÌÇÐÄÆƽâ°æ, /statistics/209028/us-30-day-prevelance-drug-use-grades-8-10-12-since-1991/ (last visited July 29, 2026)
30-day prevalence of use of marijuana/hashish for grades 8, 10, and 12 combined from 1991 to 2024 [Graph], NIH, & NIDA, December 17, 2024. [Online]. Available: /statistics/209028/us-30-day-prevelance-drug-use-grades-8-10-12-since-1991/
