… any property owned or used by the District or colleges of the District or while participating in any District or college-sponsored function or field trip. "Controlled substances," as used in this section, include but are not limited to the following drugs and narcotics: (a) opiates, opium and opium derivatives; (b) mescaline; (c) hallucinogenic substances; (d) peyote; (e) marijuana; (f) stimulants and depressants; (g) cocaine." Annual …