Use of the drug "Ecstasy" by American adolescents continued to rise sharply during 2000, according to results from the 26th National Survey in the Monitoring the Future study, conducted at the University of Michigan Institute for Social Research. The study was based on nationally representative surveys of some 45,000 students in grades 8, 10, and 12. The use of several drugs declined substantially in recent years. Inhalants, LSD, crystal methamphetamine, and Rohypnol all were down from peak levels in the mid-90's. The proportion of students using each of these drugs sometime in the 12 months prior to the survey declined by between a quarter and a third. Crack cocaine and cocaine powder also started to decline in the past year or two, though the proportional declines were much smaller. The study also contains statistics on teens' use of heroin, steroids, and alcohol. Tables, figures