Research at the secondary school level provides compelling evidence to suggest that a positive school climate is related to improved health, wellbeing, and cognitive outcomes for students. In response to these findings, school systems around the world are mandating the collection of school climate data in schools. However, reviews of the literature indicate that there are relatively few instruments that provide evidence to support translation and criterion validity and assess the school climate from the perspectives of primary school students; and all of them were considered unsuitable or problematic for our purposes. To overcome this gap in the literature, this article describes the development and validation of a school climate survey designed to assess primary school students' perceptions of school climate. Evidence to support translation validity is provided through data collected at various stages of the development process. Further, data collected from a sample of 1193 primary school students (years 3 to 6) were analysed to provide evidence to support convergent, discriminant concurrent, and predictive validity. The survey and evidence of its psychometric properties are significant for researchers, schools, and education systems seeking to assess primary school students' perception of the school climate.