A project has been set up in a socially deprived inner-London borough to provide foster carers with practical skills in the management of child behaviour. Clare Pallett, Stephen Scott, Kathy Blackeby, William Yule and Roger Weissman discuss why the project was set up and consider how carers learn best. Social workers often provide good general support to carers and placements, but may not offer more specific practical advice in managing behaviour so well. A training course based on cognitive-behavioural theory is described and case examples given. The evidence presented shows significant improvements in carer—child interaction, child difficulty, specific child problems causing most worry to carers, and child emotional symptoms; insignificant improvements were seen in hyperactivity and conduct problems.