Efforts to improve teachers' knowledge and to change the nature of curriculum materials have dominated mathematics reforms since the late 1990s. In this article, we compared middle school teachers' mathematical knowledge for teaching (MKT) and curriculum use between 2005 and 2016 to assess progress toward these key goals. We found teachers' MKT…

We use data from multiple national surveys to describe trends in private elementary school enrollment by family income from 1968 to 2013. We find several important trends. First, the private school enrollment rate of middle-income families declined substantially over the past five decades while that of high-income families remained quite stable.…