The Australian Council for Educational Research (ACER) is one of the world's leading educational research centres. ACER's mission is to create and promote research-based knowledge, products and services that can be used to improve learning across the life span. This annual report describes ACER's milestones and accomplishments for the 2014-2015 academic year. Ongoing priorities include: building the breadth, depth and reach of the research; expanding professional resources and technologies in support of assessment for teaching and learning; providing leadership in school-community partnerships; enhancing the role as education adviser and commentator; addressing disadvantage; and consolidating the role as a higher education provider. [For the report from the previous year, "ACER 2013-2014 Annual Report," see ED557082.]