At the start of Year 2, schools will be randomized in a 1:1 ratio to either receive 'Stanford REACH Lab's Smart Talk: Cannabis Prevention and Awareness' curriculum or 'delay-in-treatment (standard of care)'. Students in these schools will receive the Stanford curriculum designed as a 5-session course administered in a school class-room setting.

At the start of Year 2, schools randomized to the delay-in-treatment group will receive a standard of care for one year. After year 2, the delay-in-treatment group will crossover to receive 'Stanford REACH Lab's Healthy Futures: Cannabis Prevention and Awareness until year 5 (receive intervention for years 2 to 4).

Behavioral:Smart Talk includes 5 lessons, each providing activities, online quiz games, and worksheets in addition to presentations, resources, and other materials aimed at addressing key factors associated with youth cannabis use, including changing adolescents' attitudes towards and misperceptions about cannabis; increasing their refusal skills to pulls of marketing and social media; reducing stress and depression which have been linked to cannabis initiation and use; improving coping skills; and decreasing intentions and actual use of all cannabis products.

Investigator-originated survey measures (questions) assess ever cannabis use & past 30-day cannabis use. This outcome measure assesses cannabis use.

Investigator-originated survey measures (questions) assessing change in participant intention to use cannabis in the future