A recent study of year 9 students' results on reading comprehension and mathematics tests, by the Australian Council for Educational Research (ACER) found that a positive school climate is associated with higher literacy and numeracy test scores. In other key findings, socioeconomic status, language background, Indigenous status, gender and educational aspirations were found to have significant effects on achievement in both literacy and numeracy. Parents' education had a significant effect on literacy but not on numeracy. This article gives an overview of the findings.