Rationale and study protocol to evaluate the SunSmart policy intervention: a cluster randomised controlled trial of a primary school-based health promotion program.

Background: Previous evaluations of the SunSmart Program have supported the link between a written sun protection policy and improved sun protection behaviours in New South Wales (NSW) primary schools. However these evaluations have relied on self-reported data and research suggests that direct observations are required to better represent schools' usual sun protective practices.

Methods/design: Data will be collected in the summer months of 2014, 2015, and 2016 as part of an 18-month cluster-controlled trial in NSW primary schools (n = 20). Researchers will conduct three direct observations to record students' hat use and teachers' use of sun protective measures during recess and lunch periods in each school. Researchers will also record the volume of sunscreen that the Year 6 classes in each school utilise over the term. At the conclusion of baseline data collection, five schools will be randomised into an intervention group that will work with researchers to develop a policy-driven intervention to improve sun safety behaviour in NSW primary schools.

Discussion: An initial review of relevant Australian and New Zealand literature suggests that provision of policy support is likely to improve school sun protection practices; however there is no suggested model for this support. This will be the first objective analysis of sun safe behaviours leading to a policy-driven intervention conducted in Australian primary schools since the 1990s, and will inform the future direction of sun safety in our schools.

Trial Registration: Australian and New Zealand Clinical Trials Register ACTRN12614000926639 Registered 28(th) August 2014.