Cognitive diagnostic models can uncover students' mastery of multiple fine-grained skill attributes or problem-solving processes. A number of studies have applied cognitive diagnostic models to detect students' knowledge mastery in mathematics and language testing. However, few studies focus on cognitive diagnostic assessment in K-12 science…

This speech, presented by the U.S. Secretary of Education, speaks to mathematics educators about the need to reach for high standards of learning in mathematics as an ever more important part of preparing students for an increasingly complex global economy. One of the major concerns is increased polarization and dissension about how mathematics is…