Monitoring the Future
Past Month Marijuana Use Within HS Cohort Groups

Source: University of Michigan, Monitoring The Future Studies

Past Month Marijuana Use Within Cohort -- Classes of 1995 through 2003
Class of: 8th Grade 10th Grade 12th Grade
1995 3.2 10.9 21.2
1996 3.7 15.8 21.9
1997 5.1 17.2 23.7
1998 7.8 20.4 22.8
1999 9.1 20.5 23.1
2000 11.3 18.7 21.6
2001 10.2 19.4 22.4
2002 9.7 19.7 21.5
2003 9.7 19.8 21.2

Note: Data has been normalized to reflect changes in drug use patterns within each demographic. That is, the 10th grade and 8th grade data are taken from the corresponding 2 years and 4 years prior respectively, for each class.

truth: the Anti-drugwar Anti-drugwar Arsenal Accept the $1 Challenge