Parents have a significant role in the prevention of smoking among their ch
ildren, yet there is scarce research into what parents actually do to encou
rage non-smoking, This paper examines the actions that a sample of mothers
of grades 7 and 8 students in southern Sydney have taken with regard to smo
king prevention and the factors associated with taking action. Data were co
llected from 1113 mothers through a self-completed questionnaire sent home
and returned by students. About four out of five mothers had had an open di
scussion about the importance of not smoking and 28% had enforced non-smoki
ng rules. Non-smoking mothers, mothers with a more positive attitude toward
s their role in preventing their child from smoking and mothers who were wo
rried about their child smoking were more likely to have enforced rules. Af
ter adjusting for maternal smoking, level of worry about their child smokin
g and attitude towards smoking, mothers speaking a language other than Engl
ish at home were significantly less likely to have discussed not smoking, b
ut tended to have enforced non-smoking rules. When an associated study of t
he children of these mothers is considered, where students speaking a langu
age other than English at home smoked less than those speaking English, it
suggests that enforcing non-smoking rules is an effective strategy for at l
east delaying smoking among grades 7 and 8 students.