Using Health Hawke’s Bay records, these researchers analysed the number and demographics of 4-year-old children assessed with behaviour issues as determined by the Strengths and Difficulties Questionnaire (SDQ) at the health and development Before (B4) School Checks up to 31 August 2011, and the interventions to which they were referred. Thirty-six parents/caregivers of these children were interviewed by telephone and asked what difference did the B4 School Check make to children assessed with behaviour issues and what aspects of the B4 School Check delivery contributed to successful outcomes for these children. Child behaviour issues were identified in more boys than girls and concentrated in more deprived families. Māori children were over-represented in relation to the regional population. The majority of referrals for child behaviour directed parents/caregivers to non-governmental organisations for family support and parenting programmes. An analysis of the interview material indicated high levels of satisfaction with the B4 School Check for behaviour and the referred outcomes