High school seniors among

The University of Wisconsin s Department of ports Medicine found that 30% of high school football players surveyed in that state used or had used creatine, and the use of the supplement tended to increase with age. Simi-larly, a survey of high school and middle school athletes in Westchester County, New York, reported creatine use among 44% of high school seniors surveyed. 

NIDA reports that 13 million to 17 million Americans have used a hallucinogen at least once. In 1999, 8.1% of high school seniors had used LSD in the previous year. One study identified LSD as the third most common drug of abuse among college students, after alcohol and marijuana. 

Trends in the prevalence of marijuana or hashish use among high school seniors (from Johnston, O Malley, Bachman, Schulenberg, 2006)... 

Results from surveys of high school seniors in previous Monitoring the Future studies show that cocaine use among seniors substantially increased from 1976 to 1979. In 1976, six percent of all high school seniors said that they had used cocaine. By 1979, that number had doubled to 12 percent. This figure remained relatively stable for the next five years, increased slightly in 1985, and then leveled again in 1986. 

The data on crack use and abuse among high school seniors dates back to the mid-1980s, when references to crack were generally available only as part of a larger, comprehensive picture of cocaine use. However, rather than referring to crack specifically by name, information about its abuse was more commonly reflected in questions about smoking cocaine. 

In studies measuring drug use among high school seniors, the period from 1986 to 1991 shows a sharp decline in crack use, from 4.1 percent to 1.5 percent. The prevalence of crack use then stayed level for several years before once more rising between 1993 and 1999 (an increase from 1.5 percent to... 

All the cases described in this chapter also suggest a contribution to a perception of the relevance of chemistry education among the learners and a better awareness of environmental and sustainability issues, as also discussed by Mandler et al. The studies also described contributions to general skill development, e.g., how to react to politics, media or consumer choices. These claims will be illustrated by a quote from one student from Israel and three from Germany all after having learned about biodiesel in the first year of the senior high school cycle ... 

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