, even though displacement episodes early in children’s lives have the largest impacts on household income (because they … persist for many years), displacement episodes occurring in the children’s teenage years have the largest effects on human … capital accumulation. We show that most of the effects operate through the intensive margin of schooling, and that children …

track students. However, there are concerns that the most frequently used college placement exams lack validity and … reliability, and unnecessarily place students from under-represented groups into remedial courses. While recent research has shown … that tracking can have positive effects on student learning, inaccurate placement has consequences: students face …