Drug use among students decline Attorney General Bill Lockyer on Monday released the findings of a survey that shows overall drug use by California students has declined for the first time in a decade.,However, the preliminary findings of the Biennial California Student Survey also showed the level of excessive alcohol and drug use by heavy users remained unchanged, and the use of heroin by 11th graders has increased, according to a spokesman.,Marijuana use among freshmen and junior high school students has decreased substantially overall, a trend that peaked in 1995 and leveled out in 1997, Barankin said.,Barankin said the largest declines were found in alcohol use, but noted that although student alcohol consumption has fallen for the first time in 15 years, it still remains high.,High school juniors reporting heroin use in the last six months increased from 1.7 percent in 1997-98 to 5.2 percent this year, and remained rare among other grades.