This is the twelfth edition of the Brown Center Report. Part I examines the latest data from state, national, or international assessments. This year the focus is on the latest results from the Progress in International Reading Literacy Study (PIRLS) and Trends in International Math and Science Study (TIMSS) released in December, 2012. Part I also looks at the so-called "A+ countries," named that because they were the top nations on the first TIMSS, given in 1995. Part I offers "A Progress Report on the A+ Countries," and finds that, surprisingly, three of the six have registered statistically significant declines since 1995. Part II explores a perennial theme in education studies--the topics that never seem to go away in terms of research and debate. This year it is on the controversial topics of tracking and ability grouping. An analysis of data from the National Assessment of Educational Progress (NAEP) documents a resurgence of ability grouping in fourth grade reading and mathematics. Part III is on a prominent policy or program. This year's analysis is on the national push for eighth graders to take algebra and other high school math courses. Algebra is now the single most popular math course in eighth grade. The study in Part III uses state variation in enrollment rates to ask the question: What has happened to the NAEP scores of states that boosted their eighth-grade advanced-math enrollments? The study uncovers no relationship between change in state NAEP scores and change in enrollments. States boosting advanced math taking are no more likely to show NAEP gains than other states. [For the 2012 report, see ED529532.]