The document outlines the methodology used in the Academic Ranking of World Universities (ARWU). It discusses the history and development of ARWU since 2003. It describes the selection criteria including alumni awards, staff awards, highly cited researchers, papers in Nature and Science, total papers, and per capita performance. It also summarizes the results, features and impact of ARWU, and considers future directions including subject rankings, improvements to the methodology, and profiling of universities.