PURPOSE: This study uses 14 years of data from nationally representative samples of U.S. middle and high school students in the Monitoring the Future study to examine associations between school student drug testing (SDT), substance use, and participation in extracurricular activities. METHODS: Analyses use questionnaire data collected from 1998 to 2011 from 89,575 students in… Continue reading Middle and high school drug testing and student illicit drug use: a national study 1998-2011