Marijuana Use in Past Month, by Grade Level

Year(s): 2017-2019

San Mateo CountyPercent
Grade Level0 Days1 Day2 Days3-9 Days10-19 Days20-30 Days
Grade 797.7%1.0%0.5%0.4%0.3%0.3%
Grade 992.4%2.5%1.2%2.0%0.8%1.1%
Grade 1182.8%4.1%3.3%4.7%2.0%3.1%
Non-TraditionalSSSSSS