Marijuana Use in Past Month, by Grade Level

Year(s): 2017-2019

Napa CountyPercent
Grade Level0 Days1 Day2 Days3-9 Days10-19 Days20-30 Days
Grade 795.9%1.9%0.8%0.6%0.4%0.5%
Grade 990.7%2.9%2.0%2.5%0.7%1.3%
Grade 1183.4%3.8%3.0%4.0%2.2%3.6%
Non-Traditional61.5%3.6%3.7%4.8%5.7%20.6%