This study reports the implementation of a program for early onset disruptive behaviour (Webster- Stratton & Hammond, 1997) through a hospital– community agency partnership in a demographically highrisk community traditionally underserved for mental health services. Sixty-four families at the clinic site and 19 at the community site completed the program at similar rates. The community sample had significantly higher demographic risk (income, immigrant status, parental education). Both groups showed significant improvement on parent-rated disruptive child behaviour and parenting stress. Staff interviews indicated strong support for program continuation and identified areas needing further attention. The findings are discussed in terms of possible approaches to mental health promotion in high-risk communities.