Instruction upon the nature of alcohol, narcotics, restricted dangerous drugs as defined in Section 11032 of the Health and Safety Code, and other dangerous substances and their effects upon the human system as determined by science shall be included in the curriculum of all elementary and secondary schools. Instruction on the effects of alcohol, narcotics, restricted dangerous drugs as defined in Section 11032 of the Health and Safety Code, and other dangerous substances upon prenatal development as determined by science shall be included in the curriculum of all secondary schools. The governing board of the district shall adopt regulations specifying the grade or grades and the course or courses in which the instruction with respect to alcohol, narcotics, restricted dangerous drugs as defined in Section 11032 of the Health and Safety Code, and other dangerous substances shall be included. All persons responsible for the preparation or enforcement of courses of study shall provide for instruction on the subjects of alcohol, narcotics, restricted dangerous drugs as defined in Section 11032 of the Health and Safety Code, and other dangerous substances.