Recent research indicates that certain drug education programmes do stop or
delay the onset of drug use under optimum conditions. Social inoculation p
rogrammes have generally enjoyed the greatest degree of success, but the be
haviour changes have been confined to a small number of students; have not
been uniform across all drugs and have diminished over time. Research on th
e cost effectiveness of drug education programmes indicates that they compa
re favourably with the cost effectiveness of most law enforcement approache
s, but are not as cost effective as treatment. While there are some methodo
logical qualifications, the drug education literature does indicate that so
undly conceptualized and rigorously implemented programmes can influence dr
ug using behaviour and that comprehensive provision of such programmes is l
ikely to produce a net social cost saving to society. This does not mean th
at proven drug education programs will necessarily be implemented. The most
powerful factor in the implementation process is selection of programmes o
n the basis of ideal outcomes, rather than on the evidence of what can real
istically be achieved. Ultimately, this is self-defeating, because programm
e failures will again discredit the whole drug education approach. Drug edu
cation programmes must be selected because they have demonstrated the abili
ty to have a beneficial impact on youth drug use and youth drug problems.