Research shows that population-level rates of obesity, which rose dramatically from the 1970s through the mid-2000s, have since plateaued or even started to decline. However, overall improvements may mask differences in trends for different subgroups. For instance, obesity rates have continued to climb among low-income adolescents, leading to…

This chapter documents changes in school readiness among entering kindergarteners across the years 1998-2010, a period characterized by dramatic changes to the early childhood landscape. I use a broad definition of school readiness that includes not only academic skills such as reading and math knowledge but also social and emotional skills and…