SAN DIEGO (FOX 5/KUSI) -- A peer-reviewed study published in the Journal of Adolescent Health found that frequent cannabis use among 11th graders in California has been steadily rising after adult-use cannabis retailers legally opened throughout the state in 2018, according to a press release Monday from the Public Health Institute.

The study, Local Cannabis Policy and Cannabis Use by California High School Students Before and After Statewide Retail Legalization, was co-authored by researchers from UC Irvine, UCLA and the Public Health Institute's Get it Right from the Start program.

The study collected data from the California Healthy Kids Survey (CHKS), an annual cross-sectional survey administered by the Department of Education to 7th, 9th, and 11th-grade students. The data collected

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