Measuring kindergarten readiness is essential to identifying children who would benefit from additional supports, either in kindergarten or in the years before kindergarten entry. Several measures of kindergarten readiness are in use now by states and researchers. Most assess individual children at the time they enter kindergarten, using teachers…

How people see the world, even how they research it, is influenced by beliefs. Some beliefs are conscious and the result of research, or at least amenable to research. Others are largely invisible. They may feel like "common knowledge" (though myth, not knowledge), unrecognized premises that are part of the surrounding culture. As we…