| — Not available. |
| a In-school data collection in 2020 was halted on March 15, 2020, as a result of the COVID-19 pandemic. This halt resulted in a sample size about one-quarter the size of a typical data collection. Detailed analysis supports the study results from 2020 as nationally representative. One reason Monitoring the Future (MTF) surveys a large sample size every year is so estimates of substance use for specific demographic subgroups can be produced. It is not possible to produce reliable estimates for demographic subgroups for 2020 because of the three-quarters reduction in sample size due to the COVID-19 pandemic. The 2020 in-school data collection was also unique because it was the first year all students recorded their answers on electronic tablets, which MTF brought to the schools. This transition to electronic data collection was part of a plan that included a 2019 MTF administration in which a randomly selected half of schools used traditional paper-and-pencil questionnaires and the other half used electronic tablets. This allowed assessment of potential survey mode effects, and in 2020 and all future years the project will no longer use paper-and-pencil questionnaires. |
| b Hispanic indicated by students who marked the response "Mexican American or Chicano," "Cuban American," "Puerto Rican," or "Other Hispanic or Latino." Of the remaining respondents, those who marked White (or the Middle Eastern category, added in 2021) and no other categories are coded as White, and those who marked Black and no other categories are coded as Black. Some estimates have been revised since previous publication in America's Children. |
| NOTE: Nicotine use is defined in this indicator as use of any of the following products in the past 30 days: cigarettes, large cigars, flavored small cigars, regular small cigars, tobacco using a hookah, smokeless tobacco, or nicotine using a vape. Starting in 2023 the survey included a question on the use of nicotine pouches. The definition of Any Nicotine Use was updated over the 2023–2024 period to include nicotine pouches. This changed the estimates for 2023 and 2024. |
| SOURCE: National Institute on Drug Abuse, Monitoring the future Survey. |