JUUL is a PAX labs electronic nicotine delivery system (ENDS) product that entered the e-cigarette market in late 2015 and accounted for 40% of the market share in 2017 (Willet et al., 2018; Huang et al., 2019). This study seeks to understand adolescents’ knowledge of JUUL policies, perceptions of policy enforcement, and intentions to use JUUL based on perceptions of policy enforcement. 300 middle and high school students from both private and public schools in Howard County, Maryland will be surveyed. Data will be analyzed using univariate and bivariate analyses. Understanding what adolescents know, think, and do in response to policies is helpful in strengthening policies and curtailing underage JUUL use.