According to the Associated Press as reported by The Partnership at Drugfree.org, 27% of teens have recently reported using marijuana in the past month, an 8% increase since 2008.
The Partnership Attitude Tracking Study suggests an association between teens who smoke marijuana more regularly and the use of other drugs. Adolescents who smoked 20 times or more a month were almost twice as likely, as those who smoked marijuana less often, to use Ecstasy, cocaine or crack.